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Stage associating process for producing methanol and ammonia using coal and coke oven gas as material

A technology for synthesizing methanol and coke oven gas, which is applied in chemical instruments and methods, preparation/separation of ammonia, preparation of organic compounds, etc. It can solve the problems of large investment and increased power consumption of compressors, etc.

Inactive Publication Date: 2010-03-31
杭州林达化工技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the above-mentioned various alcohol-linked methods have their own technical and economic advantages, they are all based on the production of synthetic ammonia and the production of methanol as a secondary. Although the actual methanol output of some factories is close to the output of synthetic ammonia, when the output of methanol is greater than that of ammonia Methanol synthesis is carried out under medium and high pressure, which requires a large investment and increases the power consumption of the compressor

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  • Stage associating process for producing methanol and ammonia using coal and coke oven gas as material
  • Stage associating process for producing methanol and ammonia using coal and coke oven gas as material
  • Stage associating process for producing methanol and ammonia using coal and coke oven gas as material

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Embodiment Construction

[0019] The small synthetic ammonia plant with an annual output of 30,000 tons adopts the above-mentioned method of the present invention image 3 The flow process is to add a gas furnace and a low-pressure compressor, and use atmospheric pressure air steam to produce gas to obtain crude gas (1), which is purified and desulfurized by crude gas, compressed by the old and new compressors (I) to 0.8MPa respectively, and converted by CO and deCO 2 The obtained raw material gas (2) is compressed (II) to 5.5MPa to remove low-pressure methanol synthesis, and a JW low-pressure uniform temperature methanol synthesis tower is used. The diameter of the synthesis tower is 2 meters and the diameter of the synthesis tower is 2 meters. 3 90,000 tons / year of methanol synthesized by NC307 low-pressure methanol catalyst, and 10,000 tons / year of methanol synthesized by low-pressure methanol purge gas (3) to 30MPa to high-pressure methanol, and then refined gas by methanation (4) Ammonia is remov...

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Abstract

The present invention is stepped process and apparatus of synthesizing methanol and ammonia with coal, petroleum, natural gas, coke oven gas and other material. Partial purified material gas is firstlow pressure synthesized to produce methanol, the rest gas is compressed to high pressure for synthesizing methanol further, and the high pressure methanol is pressure reduced, methanated to eliminateCO, CO2 and other harmful gas and synthesized to produce ammonia. The present invention has the advantages one less investment, low power consumption, high yield, etc.

Description

technical field [0001] The invention belongs to chemical production devices and equipment, in particular to a combined production device of methanol and ammonia, and is especially suitable for synthesizing methanol and ammonia from feed gas containing hydrogen, nitrogen, carbon monoxide and carbon dioxide. Background technique [0002] Before the present invention was made, the devices for the joint production of methanol and ammonia by hydrogen, nitrogen, carbon monoxide, and carbon dioxide raw material gas had the following types: the one is the combined production device of methanol and ammonia (abbreviated as alcohol-linked device) that my country began to set up in 1967 See Feng Yuanqi's editor-in-chief "Alcohol Production" Chemical Industry Press, 1989) from the five-stage outlet of the feed gas compressor (pressure about 11MPa) into the methanol synthesis device, and then connect the copper liquid tower in series to reduce the trace amount of carbon monoxide in the alco...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/151C07C31/04C01C1/04
Inventor 楼韧楼寿林
Owner 杭州林达化工技术工程有限公司