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Ash removal method for high-sulfur coal after high-temperature gasification

A high-sulfur coal, high-temperature technology, used in gas dust removal, combustible gas purification, combustible gas purification/transformation, etc., can solve problems such as polluting the environment and increasing production costs, and achieves low environmental pollution, easy operation, and broad market prospects. Effect

Inactive Publication Date: 2020-08-25
SHANXI LUAN COAL BASED CLEAN ENERGY
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Problems solved by technology

If the fly ash is not treated, it will not only pollute the environment greatly, but also increase the production cost

Method used

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Embodiment Construction

[0027] The principles and features of the present invention will be described below in conjunction with specific embodiments, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0028] The method for removing ash after high-temperature gasification of high-sulfur coal in this embodiment includes the following steps:

[0029] Step 1: Cyclone Separation

[0030] The untreated syngas from the syngas cooler, with a pressure of 4.27MPa and a temperature of 340°C, is sent to the cyclone separator to obtain crude syngas and fly ash.

[0031] Step 2: Filter

[0032] The separated crude synthesis gas obtained in step 1 is sent to the fly ash filter, and a backflushing system is installed in the fly ash filter, and CO with a pressure of 8.6MPa and a temperature of 230°C can be used. 2 , to backflush the filter element of the fly ash filter to ensure that the pressure drop of the fly ash filter is co...

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Abstract

The invention discloses an ash removal method for high-sulfur coal after high-temperature gasification, and belongs to the technical field of ash removal. The ash removal method after high-temperaturegasification of the high-sulfur coal comprises the following steps: step 1, performing cyclone separation; step 2, performing filtering; step 3, performing primary treatment of fly ash; step 4, performing secondary treatment of the fly ash; and step 5, performing discharging. The ash removal method for the high-temperature gasified high-sulfur coal has the advantages of being high in ash removalefficiency, easy and convenient to operate, low in energy consumption, low in treatment cost, small in environmental pollution and the like.

Description

technical field [0001] The invention relates to a method for removing ash after high-temperature gasification of high-sulfur coal, and belongs to the technical field of ash removal. Background technique [0002] China produces nearly 10 million tons of high-sulfur coal (high-sulfur coal refers to coal with a sulfur content greater than 3%) produced in the process of coal mining. This part of high-sulfur coal produces a large amount of sulfur in the subsequent coking, combustion and other utilization processes. oxides, forming acid rain, seriously affecting the ecological environment around the mining area. After the high-sulfur coal is gasified at high temperature, a large amount of fly ash will be produced. If the fly ash is not treated, it will not only pollute the environment greatly, but also increase the production cost. In view of this, it is necessary to provide a method for removing ash after high-temperature gasification of high-sulfur coal to solve the defects of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02
CPCC10K1/024C10K1/026
Inventor 胡贤贤刘文林郭志鹏韩世良崔山山杨璐
Owner SHANXI LUAN COAL BASED CLEAN ENERGY
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