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Process for treating gas water for producing gas by lurgi furnace

A treatment method, gas water technology, applied in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve problems such as poor filtering effect of dual-media filters, high ammonia content in gas water, clogged filter beds, etc., to achieve The effect of changing the appearance of the working environment, increasing the reuse rate, and advanced indicators

Active Publication Date: 2006-06-28
TIANJI COAL CHEM IND GROUP
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Problems solved by technology

In the design process of the raw gas water treatment process, only dual-media filter is used to treat it. However, due to the high content of oil and suspended solids, the dual-media filter has poor filtering effect and often blocks the filter bed, which seriously affects The water passing capacity of the device
[0007] 3. The ammonia content in gas water is relatively high
In the design process of the raw gas water treatment process, it is designed to recover this part of ammonia, but the actual operation of the device shows that the recovery is difficult due to the unstable concentration of ammonia
More urgently, the processing accuracy of the original gas water treatment process design process can no longer meet today's environmental protection requirements

Method used

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  • Process for treating gas water for producing gas by lurgi furnace
  • Process for treating gas water for producing gas by lurgi furnace

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Embodiment Construction

[0029] In order to meet the requirements of today's environmental protection for gas and water treatment, combined with the demand for 50% expansion of the Luqi coal-to-ammonia plant, Tianji Coal Chemical Group Co., Ltd. has improved the raw gas and water treatment process of the Luqi furnace coal-to-gas plant. , Created the Lurgi furnace coal-to-gas gas-water comprehensive treatment new process of the present invention. Combine the following figure 2 The process flow chart for a detailed description:

[0030] The high-pressure gas water from the coal-to-gas section and the conversion section, after heat recovery, is flashed to remove dissolved gas through the flash / separation unit, and the degassed gas water enters the tar separator to remove solid substances to obtain primary gas water. The tar separation unit consists of two sets of tar primary separator and tar secondary separator connected in series to prolong the residence time of gas water and fully separate tar; the ...

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Abstract

The invention relates to gas water treatment method of Luqi furnace coal gas making. It includes the following steps: removing solution gas for high pressure gas liquor; removing solid matter to gain primary gas liquor; removing oil and suspended matter to gain the first stage gas liquor; processing by double mediums filter to gain the second stage gas liquor; stripping by medium pressure stripper to gain final gas liquor; discomposing vapor phase in Luqi furnace. The final gas liquor reclaims changing gas. The second stage reclaims wet gas, processes de-dusting humidifying for crude gas, and reclaims to clean rough gas. The invention increases gas liquor multiplexing ratio by comprehensive processing of multiple step processing and classification reclamation.

Description

technical field [0001] The present invention relates to a comprehensive treatment method of coal gas and water, more precisely, it relates to a new coal gas water comprehensive treatment process of Lurgi furnace coal gas, the process adopts flash separation, air flotation filtration, medium pressure steam The method of raising grades comprehensively treats gas water. Background technique [0002] Lurgi furnace crushed coal pressurized gasification technology was successfully developed by German Lurgi company in the late 1970s. This technology was successfully used in the production of city gas and synthetic ammonia with coal as raw material. There are currently 4 sets of equipment in my country that have adopted Lurgi furnace crushed coal pressurized gasification technology. [0003] The raw gas water treatment process design process of the Luqi Furnace Coal-to-Gas Plant of Tianji Coal Chemical Group Co., Ltd. is as follows: the high-pressure gas water from the coal-to-gas ...

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Application Information

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IPC IPC(8): C10K1/00
Inventor 荆宏健樊宏原李录彦郭建民冯永发
Owner TIANJI COAL CHEM IND GROUP
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