Technique for conditioning crude gas from gas making stove for coal dry distillation

A process method, crude gas technology, applied in the direction of combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve the problems of low separation efficiency and poor effect of naphthalene removal in the debenzene tower, shorten the process flow, and benefit Environmental protection, the effect of improving the desulfurization effect

Active Publication Date: 2006-02-01
鞍钢集团工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Combined with the long-term trend of gradually rising prices of petrochemical products, the use of light diesel oil to wash naphthalene has disadvantages that cannot be ignored
In addition, the debenzene distillation tower of the current crude gas debenzene process usually adopts a plate tower. Due to the low separation efficiency of the plate debenzene tower and the relatively large plate resistance, the effect of the naphthalene removal of the debenzene tower is poor.

Method used

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Embodiment Construction

[0019] The technological process of the present invention is as follows: crude gas→gas-liquid separation→primary cooling→tar capture→debenzene naphthalene→desulfurization→gas transportation→deammonization→clean gas (city gas).

[0020] The specific gas purification procedure is that the crude gas from the gas collecting pipe of the coal dry distillation gas furnace enters the horizontal tube cooler through the vapor-liquid separator and is cooled to 23°C-25°C, most of the tar vapor and most of the Water vapor and naphthalene are condensed and discharged in the form of tar ammonia condensate. Then, the tar mist is removed by an electric tar collector and then sent to the process of removing benzene and naphthalene. It is necessary to point out that since the absorption temperature for washing benzene and naphthalene with lean oil should be around 25°C, if the gas transportation process is set before the benzene and naphthalene removal process, it is necessary to set up the abso...

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PUM

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Abstract

A process for cleaning the crude gas coming from the coal-pyrogenous furnace includes such steps as gas-liquid separation, cooling, capturing tar oil, removing benzene and naphthelene, desulfuring, conveying gas, and saturating to remove ammonia and obtain clean gas.

Description

technical field [0001] The invention belongs to the field of gas purification, and is a method for processing crude gas from a coal dry distillation gas-making furnace through a gas purification device, recovering chemical products such as tar, benzene, naphthalene, ammonia, sulfur, etc., and sending the clean gas to users process method. Background technique [0002] Usually, the process of gas purification from coal dry distillation gas furnace is as follows: [0003] Crude gas→gas-liquid separation→primary cooling→gas transportation→tar capture→precooling-primary removal of naphthalene→desulfurization→deammonization→final cooling and washing of naphthalene→debenzene→clean gas; in order to meet the needs of city gas, etc., deep purification of clean gas The process of the system is: clean gas→pressurized transportation→cooling→deep naphthalene removal→deep desulfurization→dehumidification→city gas. [0004] The crude gas of the traditional process is generally 23°C to 25...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/00
Inventor 马中全王波陆友文
Owner 鞍钢集团工程技术有限公司
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