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"ABSTRAKDimetil eter (DME) adalah salah satu bahan bakar alternatif terbarukan yang dapat menggantikan pemakaian energi fosil di Indonesia. Penggunaan senyawa ini menghasilkan pembakaran yang efisien serta ramah lingkungan. Akan tetapi, dimetil eter diketahui menyebabkan degradasi pada material karet, yang banyak digunakan sebagai sealant ataupun selang pada tempat penyimpanan bahan bakar dari mesin pembakaran. Hingga penelitian ini, setiap jenis material karet mengalami degradasi yang berbeda-beda sehubungan dengan senyawa ini. Oleh karena itu, penelitian ini utamanya ditujukan untuk menentukan jenis degradasi material karet, khususnya karet alam vulkanisat, terhadap dimetil eter. Selain itu, penelitian ini hendak melihat pengaruh komposisi filler dan petroleum oil dari karet alam vulkanisat terhadap degradasi tersebut. Eksperimen yang dilaksanakan mencakup: sintesis, uji degradasi, karakterisasi mekanis dan morfologi. Nilai komposisi filler yang dipakai untuk sintesis yaitu: 10, 30, dan 60 phr; sedangkan nilai komposisi petroleum oil yang dipakai adalah 0, 10, dan 20 phr. Uji degradasi karet alam vulkanisat dilakukan dengan merendam seluruh sampel dalam pressure vessel yang berisi dimetil eter cair, yang diperoleh dari proses pencairan fasa gasnya. Karakterisasi mekanis yang dilakukan mencakup: % perubahan massa, kekuatan tensile, elongasi maksimum, dan kekerasan. Karakterisasi morofologinya berupa pengamatan langsung dan scanning electron microscopy (SEM). Data-data karakterisasi tersebut menunjukkan bahwa karet alam vulkanisat mengalami degradasi jenis absorpsi dan ekstraksi oleh karena dimetil eter. Adapun penambahan komposisi filler ditemukan dapat mengurangi pengaruh degradasi, sedangkan penambahan komposisi petroleum oil justru memperparah degradasi. Namun demikian, petroleum oil juga dibutuhkan karena dapat membuat distribusi filler merata pada seluruh bagian karet alam vulkanisat. Maka dari itu, dengan meninjau keseluruhan data tersebut, didapatkan bahwa komposisi filler dan petroleum oil yang memberikan perlindungan paling optimal terhadap degradasi oleh dimetil eter masing-masing bernilai 30 phr dan 10 phr.

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ABSTRACTDimethyl ether (DME) is one of the renewable energy that could replace the usage of fossil fuel in Indonesia. The usage of this compound could produce efficient and environmental-friendly combustion. However, based on previous research, dimethyl ether is found to cause degradation on rubber-based materials, which are used as sealant or hose inside the fuel tanker of combustion engines. Until this research, it is found that each types of rubber has suffered different kinds of degradation that caused by dimethyl ether. Therefore, the main goal of this research is to determine what kind of degradation will happen on rubber, especially vulcanized natural rubber, that cause by dimethyl ether. Moreover, this research is going to see the effect of filler and petroleum oil composition contained in vulcanized natural rubber against that degradation. There are three parts of experiments will conducted: synthesis, degradation testing, mechanical and morphology characterization. The variation value of filler composition used are 10, 30, and 60 phr; while the variation value of petroleum oil composition are 0, 10, and 20 phr. Degradation testing is done by immersing all samples inside pressure vessel that have been filled with liquid dimethyl ether, which produced from its gas by liquefaction process. Mechanical characterization that observed includes: % change of mass, tensile strength, maximum elongation, and hardness. On the other side, morphology characterization is done by direct observation and scanning electron microscopy (SEM). Those datas reveals that vulcanized natural rubber suffer absorption and extraction, two types of degradation, because of dimethyl ether. Increasing of filler composition could reduce the impact of degradation, while increasing of petroleum oil composition will give the opposite results. However, it is also found that petroleum still must needed to make distribution of filler goes through all parts of rubber. Therefore, based on these datas, we get that 30 phr of filler and 10 phr of petroleum pil will give the optimal protection on vulcanized natural rubber against degradation caused by dimethyl ether."

"Dewasa ini, telah hadir beragam energi terbarukan untuk mensubtitusi energi fosil sebagai bahan bakar kendaraan bermotor, salah satunya ialah dimetil eter. Dimetil eter merupakan bahan bakar langsung maupun campuran untuk bahan bakar khususnya pada mesin diesel. Seperti halnya gasoline, dimetil eter dapat menyebabkan degradasi swelling material seal pada bagian mesin diesel. Material seal yang umum digunakan ialah karet nitril NBR yang tahan terhadap kontak dengan hidrokarbon dan juga unggul sifat fisiknya. Dalam rangka memanfaatkan penggunaan karet alam didalam industri otomotif, peneliti melakukan campuran karet alam NR dan karet nitril 33 acrylonitrile NBR33 untuk menghasilkan karet yang memenuhi standar aplikasi material seal.. Penelitian ini akan meneliti mekanisme yang terjadi pada degradasi campuran karet alam dan karet nitril NR/NBR33 oleh dimetil eter. Variasi campuran vulkanisat karet NR/NBR33 yang digunakan secara berurutan yaitu 1:3, 1:2, 1:1, 2:1, 3:1 Metode untuk mengetahui mekanisme tersebut meliputi karakterisasi mekanis mencangkup: perubahan massa, kekuatan tensile, elongasi maksimum, kekerasan dan karakterisasi morfologis dengan pengamatan morfologis menggunakan Scanning Electron Microscopi SEM . Data penelitian menunjukkan bahwa setiap variasi sampel campuran vulkanisat mengalami peristiwa degradasi swelling dan dissolution. Peningkatan rasio karet nitril NBR33 pada vulkanisasi campuran karet dapat mengurangi penurunan tensile strength dan elongation hingga melampaui sifat fisik sebelum perendaman oleh dimetil eter. Dengan demikian, variasi elastomer terbaik diperoleh setelah membandingkan dengan standar kelayakan material seal yakni campuran vulkanisat karet NR/NBR33 dengan rasio 40 : 60 NR : NBR.

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Today, there is present a variety of renewable energy to substitute fossil energy as a fuel for motor vehicles, one of which is dimethyl ether. Dimetl ether is a direct fuel or a mixture of fuel, especially diesel engines. In addition, dimethyl ether also has met the standard criteria for renewable energy. Semelsberger et.al., 2005 . As with gasoline, dimethyl ether can cause swelling degradation of the material seal on the diesel engine. Seal material that is commonly used is a nitrile rubber NBR that is resistant to contact with hydrocarbons and also superior physical properties. In order to make use of natural rubber in the automotive industry, researchers conducted a blending of natural rubber NR and nitrile rubber NBR to produce rubber meets the standard seal material application .. This study will examine the mechanisms that occur in the relegation blending natural rubber and nitrile rubber NR NBR by dimethyl ether. Nitrile rubber types used medium quality nitrile rubber with acrylonitrile content of 33 NBR33 . Methods to determine the mechanism includes mechanical characterization covers change in mass, tensile strength and maximum elongation, hardness and morphological characterization with morphological observations using Scanning Electron Microscopic. Observations of this study is limited which is to see the effect of variation vulcanized blending ratio NR NBR33 against degradation swelling. Variations blending vulcanized NR NBR33 are used in a sequence that is 1 3, 1 2, 1 1, 2 1, 3 1. The results of this research is to determine the most optimal value ratio elastomer that is resistant to swelling degradation depend on physical and structural changes. The increase nitrile rubber NBR33 ratio of blending rubber vulcanized can reduce the decrease of tensile strength and elongation until exceed physical properties before immersion with dimethyl ether. Thus, the best elastomer variation was obtained after comparing with the standard feasibility material of seal is rubber vulcanized blending NR NBR33 with ratio 40 60 NR NBR."

"Penelitian ini bertujuan untuk mendapatkan kopolimer cangkok DPNR-g-PAN/PS yang tahan terhadap DME dengan melakukan uji perendaman terhadap DME berdasarkan pengaruh rasio monomer akrilonitril dan stirena. Hasil penelitian menunjukkan bahwa monomer akrilonitril (AN) dapat dicangkokkan pada karet alam dengan stirena (ST) sebagai ko-monomer. Dari karakteristik analisis spektrum dengan FTIR didapatkan gugus CN dan gugus benzena yang merupakan gugus dari poliakrilonitril (PAN) dan polistirena (PS). Karakterisasi temperatur transisi gelas (Tg) dengan DSC menunjukkan bahwa nilai Tg kopolimer DPNR-g-PAN/PS lebih tinggi dari Tg DPNR. Dari karakteristik Efisiensi Cangkok (EC) didapatkan nilai tertinggi adalah 73,21%. Berdasarkan karakteristik cure didapatkan bahwa semakin kecil rasio AN/ST, nilai optimum cure semakin tinggi dan scorch time yang semakin rendah. Hasil dari sifat-sifat fisik tensile strength, elongation at break dan hardness menunjukkan keberhasilan kopolimerisasi. Pengujian DPNR dan DPNR-g-PAN/PS dilakukan dalam DME. Semakin besar komposisi monomer (M) dan AN, semakin kecil persentase swelling massa dan volume. Komposisi AN untuk swelling terendah adalah 92%. Komposisi ST optimal untuk memperkecil shrinkage adalah 20%. Swelling massa dan volume terrendah dicapai pada 23,14% dan 31,90%. Shrinkage massa dan volume terrendah dicapai pada masing-masing -3,64% dan -3,86%. Pada analisis spektrum FTIR karet vulkanisat, kemungkinan putusnya ikatan rangkap C=C hanya karena interaksi DME pada DPNR bebas. Hal ini yang menimbulkan terjadinya shrinkage. Kehadiran PAN sebagai polimer bebas dapat berfungsi sebagai penahan difusi, sehingga total PAN yang tergrafting dan PAN bebas dapat memperkecil swelling dan shrinkage. Pada perubahan sifat fisik, interaksi karet DPNR ataupun DPNR-g-PAN/PS dengan DME menyebabkan menurunnya nilai tensile strength, elongation at break dan hardness. Pada analisis SEM terlihat perbedaan yang terjadi akibat swelling dan shrinkage massa dan volume setelah perendaman. Pada pengujian perbandingan dengan Nitrile Butadiene Rubber (NBR) hasil menunjukkan bahwa daya tahan terhadap DME adalah NBR-1 < DPNR-g-PAN/PS < NBR-2. Dari hasil pengujian-pengujian dapat disimpulkan bahwa proses kopolimerisasi cangkok dapat meningkatkan daya tahan karet alam terhadap DME.

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This study aims to obtain graft copolymer DPNR-g-PAN/PS which is resistant to immersion DME. The immersion test of the DME based on the ratio acrylonitrile and styrene monomer. The results showed that the monomer acrylonitrile (AN) can be grafted on natural rubber with styrene (ST) as co-monomer. From the characteristics of the FTIR spectrum analysis obtained CN groups and clusters of benzene which is a group of polyacrylonitrile (PAN) and polystyrene (PS). Characterization of the glass transition temperature (Tg) by DSC shows that Tg values copolymer DPNR-g-PAN/PS higher than Tg DPNR. The characteristics of the Grafting Efficiency (GE) obtained the highest value is 73.21%. Based on the cure characteristics, it was found that the smaller the ratio AN/ST, the higher of the optimum cure and the lower scorch time. The results of the physical properties of tensile strength, elongation at break and hardness show success copolymerization. The immersion test DPNR and DPNR-g-PAN/PS performed in DME. The larger the monomer composition (M) and AN, the smaller the percentage of swelling mass and volume. The composition of AN to the lowest swelling is 92%. ST optimal composition to minimize the shrinkage is 20%. The lowest of the swelling mass and volume reached at 23.14% and 31.90% respectively. Mass and volume shrinkage achieved at the lowest -3.64% and -3.86% respectively. In the FTIR spectrum analysis of vulcanized rubber, the possibility of the outbreak of the C=C double bond simply because of the interaction of the DPNR free and DME. This has led to an shrinkage. The presence of PAN as a free polymer can serve as a diffusion barrier, so that the total PAN grafted and PAN free can reduce swelling and shrinkage. On the change of physical properties, interaction DPNR rubber or DPNR-g-PAN/PS with DME caused a decline in the value of tensile strength, elongation at break and hardness. In the SEM analysis of visible differences that occur due to swelling and shrinkage of mass and volume after immersion. In comparative testing with a Nitrile Butadiene Rubber (NBR) results indicate that resistance to DME is NBR-1 < DPNR-g-PAN/PS < NBR-2. From the results of the tests can be concluded that the graft copolymerization process can improve the resistance of natural rubber to the DME."

"Penelitian ini bertujuan untuk mendapatkan kopolimer cangkok DPNR-g-PAN/PS yang tahan terhadap DME dengan melakukan uji perendaman terhadap DME berdasarkan pengaruh rasio monomer akrilonitril dan stirena. Hasil penelitian menunjukkan bahwa monomer akrilonitril AN dapat dicangkokkan pada karet alam dengan stirena ST sebagai ko-monomer. Dari karakteristik analisis spektrum dengan FTIR didapatkan gugus C N dan gugus benzena yang merupakan gugus dari poliakrilonitril PAN dan polistirena PS . Karakterisasi temperatur transisi gelas Tg dengan DSC menunjukkan bahwa nilai Tg kopolimer DPNR-g-PAN/PS lebih tinggi dari Tg DPNR. Dari karakteristik Efisiensi Cangkok EC didapatkan nilai tertinggi adalah 73,21 . Berdasarkan karakteristik cure didapatkan bahwa semakin kecil rasio AN/ST, nilai optimum cure semakin tinggi dan scorch time yang semakin rendah. Hasil dari sifat-sifat fisik tensile strength, elongation at break dan hardness menunjukkan keberhasilan kopolimerisasi. Pengujian DPNR dan DPNR-g-PAN/PS dilakukan dalam DME. Semakin besar komposisi monomer M dan AN, semakin kecil persentase swelling massa dan volume. Komposisi AN untuk swelling terendah adalah 92 . Komposisi ST optimal untuk memperkecil shrinkage adalah 20 . Swelling massa dan volume terrendah dicapai pada 23,14 dan 31,90 . Shrinkage massa dan volume terrendah dicapai pada masing-masing -3,64 dan -3,86 . Pada analisis spektrum FTIR karet vulkanisat, kemungkinan putusnya ikatan rangkap C=C hanya karena interaksi DME pada DPNR bebas. Hal ini yang menimbulkan terjadinya shrinkage. Kehadiran PAN sebagai polimer bebas dapat berfungsi sebagai penahan difusi, sehingga total PAN yang tergrafting dan PAN bebas dapat memperkecil swelling dan shrinkage. Pada perubahan sifat fisik, interaksi karet DPNR ataupun DPNR-g-PAN/PS dengan DME menyebabkan menurunnya nilai tensile strength, elongation at break dan hardness. Pada analisis SEM terlihat perbedaan yang terjadi akibat swelling dan shrinkage massa dan volume setelah perendaman. Pada pengujian perbandingan dengan Nitrile Butadiene Rubber NBR hasil menunjukkan bahwa daya tahan terhadap DME adalah NBR-1 < DPNR-g-PAN/PS < NBR-2. Dari hasil pengujian-pengujian dapat disimpulkan bahwa proses kopolimerisasi cangkok dapat meningkatkan daya tahan karet alam terhadap DME.

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This study aims to obtain graft copolymer DPNR g PAN PS which is resistant to immersion DME. The immersion test of the DME based on the ratio acrylonitrile and styrene monomer. The results showed that the monomer acrylonitrile AN can be grafted on natural rubber with styrene ST as co monomer. From the characteristics of the FTIR spectrum analysis obtained C N groups and clusters of benzene which is a group of polyacrylonitrile PAN and polystyrene PS . Characterization of the glass transition temperature Tg by DSC shows that Tg values copolymer DPNR g PAN PS higher than Tg DPNR. The characteristics of the Grafting Efficiency GE obtained the highest value is 73.21 . Based on the cure characteristics, it was found that the smaller the ratio AN ST, the higher of the optimum cure and the lower scorch time. The results of the physical properties of tensile strength, elongation at break and hardness show success copolymerization. The immersion test DPNR and DPNR g PAN PS performed in DME. The larger the monomer composition M and AN, the smaller the percentage of swelling mass and volume. The composition of AN to the lowest swelling is 92 . ST optimal composition to minimize the shrinkage is 20 . The lowest of the swelling mass and volume reached at 23.14 and 31.90 respectively. Mass and volume shrinkage achieved at the lowest 3.64 and 3.86 respectively. In the FTIR spectrum analysis of vulcanized rubber, the possibility of the outbreak of the C C double bond simply because of the interaction of the DPNR free and DME. This has led to an shrinkage. The presence of PAN as a free polymer can serve as a diffusion barrier, so that the total PAN grafted and PAN free can reduce swelling and shrinkage. On the change of physical properties, interaction DPNR rubber or DPNR g PAN PS with DME caused a decline in the value of tensile strength, elongation at break and hardness. In the SEM analysis of visible differences that occur due to swelling and shrinkage of mass and volume after immersion. In comparative testing with a Nitrile Butadiene Rubber NBR results indicate that resistance to DME is NBR 1 DPNR g PAN PS NBR 2. From the results of the tests can be concluded that the graft copolymerization process can improve the resistance of natural rubber to the DME."

"Dimethyl ether (DME) is a type of renewable energy that could replace the use of fossil fuel in Indonesia. Nevertheless, DME can cause degradation of rubber-based materials. Therefore, the performance of rubber that has been degraded by DME must be improved. This research study aims are to determine the degradation characteristics of modified vulcanized natural rubber in a DME environment. The effect of the filler (carbon black) and plasticizer (minarex-B) components of vulcanized natural rubber was examined. The vulcanized rubber samples were comprised of 10, 30, and 60 parts per hundred rubbers (phr) of filler and 0, 10 and 20 phr of plasticizer. The degradation of the mass and mechanical properties of the rubber were investigated. Degradation testing was conducted by immersing the samples inside a pressure vessel that was filled with the liquid phase of DME. The results indicate that the increasing of the filler composition reduces the impact of degradation, while the increasing of the plasticizer composition has the opposite effect. The plasticizer is needed to distribute the filler to all parts of the rubber. Consequently, a filler composition of 30 phr and a plasticizer composition of 10 phr provide a vulcanized natural rubber with optional protection against the degradation caused by DME. The characteristics of natural rubber, as measured by Fourier Transform Infra-Red Spectroscopy (FTIR) proved that DME does not damage the structure of the polymer chains, although DME may react with some ingredients in the rubber that have a similar polarity."

"Dimethyl ether (DME) is a type of renewable energy that could replace the use of fossil fuel in Indonesia. Nevertheless, DME can cause degradation of rubber-based materials. Therefore, the performance of rubber that has been degraded by DME must be improved. This research study aims are to determine the degradation characteristics of modified vulcanized natural rubber in a DME environment. The effect of the filler (carbon black) and plasticizer (minarex-B) components of vulcanized natural rubber was examined. The vulcanized rubber samples were comprised of 10, 30, and 60 parts per hundred rubbers (phr) of filler and 0, 10 and 20 phr of plasticizer. The degradation of the mass and mechanical properties of the rubber were investigated. Degradation testing was conducted by immersing the samples inside a pressure vessel that was filled with the liquid phase of DME. The results indicate that the increasing of the filler composition reduces the impact of degradation, while the increasing of the plasticizer composition has the opposite effect. The plasticizer is needed to distribute the filler to all parts of the rubber. Consequently, a filler composition of 30 phr and a plasticizer composition of 10 phr provide a vulcanized natural rubber with optional protection against the degradation caused by DME. The characteristics of natural rubber, as measured by Fourier Transform Infra-Red Spectroscopy (FTIR) proved that DME does not damage the structure of the polymer chains, although DME may react with some ingredients in the rubber that have a similar polarity."

"This study is to verify the usage of DME as an alternative fuel and its production routs. As it is clear the energy, its supply and consumption is a very important concern. Countries are developing and as a result of that the energy consumption is increasing. Growing energy consumption is directly related to the depletion of fossil fuels particularly petroleum based fuels. So the world has to think of using other fuels which have at least the same performance and its production is cost-effective. One of these fuels is Dimethyl ether (DME). DME is very promising fuel and research on its characteristics and efficiencies show that it can be considered as a future fuel as it is cheap, environmental friendly and has good efficiency. Another advantage of DME production is that it has different applications and is a versatile fuel. Furthermore, similarity of its physical properties to LPG makes DME handling, storing and transportation easy however DME has low viscosity and lubricity. These mentioned disadvantages which are solvable may cause problems if enough attention is not paid to them. Typically DME is produced from natural gas as a feedstock although coal and biomass are also other possible feedstock to be utilized. To produce DME, natural gas is first converted to synthesis gas via ATR method (Auto thermal reforming) and then is converted to DME through direct method. This research aimed to be done to investigate about the possibility of using DME as a future fuel by discussing about its characteristics, advantages and disadvantages. Moreover, its various production pathways has been talked about and tried to compare them in different aspects."

"Dengan semakin menipisnya cadangan dan produksi minyak di Indonesia, dibutuhkan sumber energi alternatif yang dapat menggantikan pemakaian BBM. Salah satunya adalah dimetil eter (DME). DME dapat digunakan sebagai substitusi bahan bakar diesel serta LPG. Selama ini DME disintesis dari metanol dan dimurnikan dalam dua kolom distilasi, dimana kolom ini menyumbang 50-70% dari total ongkos produksi. Dengan menggunakan proses distilasi reaktif, konversi metanol dapat ditingkatkan dengan signifikan sekaligus memurnikan produk DME pada waktu yang sama, sehingga dapat memangkas ongkos produksi DME dengan signifikan. Kendala dari penerapan distilasi reaktif adalah rumitnya gabungan fenomena perpindahan dan reaksi kimia yang terjadi pada zona reaksi. Pada penelitian ini dibuat simulasi CFD zona reaksi kolom distilasi reaktif untuk sintesis DME dari metanol menggunakan bantuan piranti lunak COMSOL Multiphysics. Hasil simulasi digunakan untuk menentukan pengaruh tinggi zona, komposisi umpan, dan temperatur umpan terhadap komposisi keluaran dari produk gas zona reaksi, konversi metanol, dan profil temperatur sepanjang zona. Hasil simulasi menunjukkan peningkatan konversi yang signifikan dengan peningkatan tinggi zona dan temperatur umpan, sementara komposisi umpan mempengaruhi kemurnian DME yang keluar dari zona secara signifikan. Gabungan ketiga parameter pada keadaan optimum menghasilkan konversi total metanol sebesar 99%.

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With the decreasing amount of oil supply and production in Indonesia, a utilization of alternative energy is highly on demand. One of the promising energy source is dimethyl ether (DME). DME can be used as a diesel fuel and LPG substitute. Conventionally, DME is synthesized from methanol and purified using two distillation columns, which contributes about 50-70% to the cost of production. By using reactive distillation process, the conversion of methanol can be enhanced greatly while purifying the DME at the same time, thus cutting the cost of production significantly. The problem to apply this process is the complicated behavior from transport phenomena and chemical reaction inside the reaction zone. Therefore, in this research a reaction zone inside reactive distillation column is simulated using CFD software, with synthesis of DME from metanol as a base case. The simulation is done using COMSOL Multiphysics. The purpose of this research is to know the influence of zone height, feed composition, and feed temperature to the gas product of reaction zone, methanol conversion, and the temperature profile across the zone. Simulation results show a significant increase in conversion by increasing the zone height and feed temperature, while the feed composition greatly affect the gas product composition. Combination of this three parameter at its optimum value results in methanol total conversion about 99%."

"Di tengah fenomena pemanasan global, simulasi proses sintesis dimetil eter dapat dikembangkan sebagai acuan dalam aplikasi kehidupan nyata. Parameter operasi yang menghasilkan paling DME yang meliputi tekanan inlet reaktor dari 18 atm, reaktor suhu inlet 533 K, tekanan distilasi 8 atm, kecepatan arus masuk 0,408 m / s, dan panjang reaktor 4 meter. Di bawah parameter tersebut, 10,7 mol / s dari dimetil eter diproduksi, dengan hasil total 47% dan konversi metanol 90%. Penambahan aliran recycle meningkatkan hasil sebesar 2%. simulasi ini kemudian bervariasi berdasarkan tekanan, suhu, kecepatan arus masuk, dan panjang reaktor, dimana suhu mempengaruhi konversi sebesar 76% maksimal.

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In the midst of the global warming phenomenon, a simulation of dimethyl ether synthesis process can be developed as a reference in real-life application. The operating parameters that produces the most DME include the reactor inlet pressure of 18 atm, reactor inlet temperature of 533 K, distillation pressure of 8 atm, inflow velocity of 0.408 m/s, and reactor length of 4 meters. Under these parameters, 10.7 mol/s of dimethyl ether is produced, with total yield of 47% and methanol conversion of 90%. The addition of recycle stream increases the yield by 2%. The simulation is then varied based on pressure, temperature, inflow velocity, and reactor length, wherein temperature affect the conversion by 76% at maximum."