A kind of series production method of alcohols or mixed alcohols and methanation to produce hydrocarbons
A production method and technology of mixed alcohols, which are applied in the production of hydrocarbons from carbon oxides, chemical instruments and methods, and the preparation of hydroxyl compounds, etc., which can solve the problems of large amount of purge gas, high energy consumption, and low utilization rate
Active Publication Date: 2015-08-26
杭州林达化工技术工程有限公司
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Problems solved by technology
[0009] The present invention overcomes the low conversion rate of CO in the production of methanol, ethanol and other alcohols or mixed alcohols in the prior art, and the effective gas CO, H 2 Low utilization rate, large amount of vent gas and high energy consumption
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Embodiment 1
[0031] Example 1: Press Figure 5 Set the pressure to 10MPa, H 2 Coal-based fresh syngas 1 with a / CO ratio of 1.49 passes through the purification tower 101 to remove harmful substances to the catalyst, and then merges with the circulating gas 9 into the heat exchanger 102, heats up to 290°C and enters the reactor 103. 2 Sulfur resistant catalyst 50M 3 Synthesize low-carbon mixed alcohols at low temperature, the outlet gas is cooled to According to the requirements of 3, the mixed gas 6 is prepared, and the temperature is raised to about 300°C through heat exchange, and then enters the methanation reactor, and is equipped with 30M 3 Methane is synthesized under the methanation tower 108 of the nickel-based methane catalyst, the methane tower passes through the heat exchanger 112 and the water cooling or air cooler 110 for heat exchange and cooling, and the separation tower 111 separates the condensed water 8 to obtain the product gas 7 and synthesize low-carbon alcohol. Bo...
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The invention relates to a series production method of alcohol or mixed alcohol and methanation hydrocarbon; the cascade production method is characterized by comprising the following steps of: firstly catalyzing and synthesizing fresh synthesis gas mainly containing CO, CO2, H2 and the like into the mixed alcohol under pressurization, after separating the alcohol product, carrying out methanation reaction on unreacted gas by adjusting a hydrogen-carbon ratio under the pressurization to generate the hydrocarbon so that active constituents such as CO and H2 in the fresh synthesis gas are converted into the alcohol and hydrocarbon products to the greatest degree. According to the method, the consumption of synthetic feed gas is substantially reduced, the thermal efficiency in the productive process is substantially increased, the zero release of CO2 in production is realized, and the utilization rate of CO2 in the feed gas is also increased.
Description
technical field [0001] The invention belongs to the field of coal chemical production technology and the field of energy chemical engineering, and mainly relates to a method for producing alcohols or mixed alcohols and hydrocarbons by using coal, oil, and gas containing C and H as raw materials to make synthesis gas. Background technique [0002] The production of methanol from syngas has been a widely used technology. United Carbon Corporation and others have also developed the technology of producing ethanol directly from syngas (FR2259078). Syngas can also produce high-carbon or low-carbon mixed alcohols. Catalytic synthesis of low-carbon mixed alcohols from synthesis gas, the main reaction formula is as follows: [0003] nCO+2nH 2 =CnH 2n+1 OH+(n-1)H 2 O (1) [0004] CO+H 2 O=CO 2 +H 2 (2) [0005] The total reaction formula of the above two formulas is (2n-1)CO+(n+1)H2=CnH 2n+1 OH+(n-1)CO 2 (3) [0006] H of the r...
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IPC IPC(8): C07C29/151C07C31/02C07C1/04C07C9/04C10L3/08
CPCY02P20/10Y02P20/141
Inventor 楼韧楼寿林
Owner 杭州林达化工技术工程有限公司