ankesh1 - Enhancing Methanol Production by CO2 Injection BY...

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Page 1 of 13 Enhancing Methanol Production by CO2 Injection BY: ABDULATIF M. AL-MUSABBEH Saudi Methanol Co., Jubail, K.S.A. SAYER M. AL-SHAMMARI Saudi Methanol Co., Jubail, K.S.A. Date 15 th APRIL 2006
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Page 2 of 13 ABSTRACT Ar-Razi had conducted a feasibility study about enhancing the methanol production by 20% via CO 2 injection. This injected CO 2 will be recovered from existing Reformer Flue Gas. The advantage of CO 2 injection had resulted in attractive economical cost for methanol production as well as high contribution to reduce the emission of CO 2 to atmosphere. However, the remarkable achievement in this study is not only the production increase that will reach 20%, but also the CO 2 source, which will be recovered from existing steam reformer Flue Gas. Recovery of CO 2 from flue gas and use it in boosting methanol production can make Ar-Razi Pioneer in the industries. ARRAZI own the largest methanol complex in the world within one fence through 4 independent plants, with nameplate capacity equivalent to 3.1 million Metric Tons per Year. Methanol is produced through well-known conventional technology, which consists of steam reformer, methanol Converter, and distillation. ARRAZI steam reformers can approximately emit 1880 KNM3/h of flue gas from which CO 2 can be recovered. In conventional Methanol process CO 2 , CO and H 2 (SynGas) are produced by reforming natural gas and then react together on synthesis catalyst to produce crude methanol. Since the H 2 exists in excess quantity, injecting CO 2 to SynGas can increase methanol production. Brief description about the project is as follow: flue gas will be pulled from two reformer stacks via blower, and then cooled down by direct contact with cold water. Next, flue gas will be treated in two-column absorption technology using amine-based solvent to capture CO 2 . Purified CO 2 will be pressurized and then injected in the methanol process. The technical evaluation showed that de-bottlenecking the methanol plants is feasible from operation and maintenance point view. In addition, Economical evaluation had showed attractive return and payback period.
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Page 3 of 13 Introduction : Feasibility study had been conducted to de-bottleneck Ar-Razi methanol plants. The purpose of de-bottleneck study was to inject the methanol plants by CO 2 in order to increase the production considering methanol demand growth, improve the production cost and sustain against the impact of Natural Gas change. Three methanol plants were considered in CO 2 injection which will result in 20% overall production increase; approximately 1515 Ton/day. CO 2 source will be the flue gas emitted by two existing steam reformers, which will be recovered through Amine-Based Chemical Absorption process. As result of recovering CO
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This note was uploaded on 11/09/2011 for the course CHEMICAL E ech 401 taught by Professor Rammurti during the Spring '11 term at Punjab Engineering College.

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ankesh1 - Enhancing Methanol Production by CO2 Injection BY...

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