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Device and method for producing synthetic gas by multi-nozzle gasification furnace

A gasifier and synthesis gas technology, which is applied in the field of coal gasification, can solve the problems of low combustion temperature, water in the synthesis gas, and low heat flux, and achieves the effects of high temperature, reduced labor cost, and increased heat flux

Active Publication Date: 2021-04-27
HUAYANG NEW MATERIAL TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The technical problem to be solved by the present invention is that the syngas produced by the existing gasifier has problems such as pulverized coal entering the furnace, low density, low heat flux, low combustion temperature, and water in the syngas.

Method used

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  • Device and method for producing synthetic gas by multi-nozzle gasification furnace
  • Device and method for producing synthetic gas by multi-nozzle gasification furnace
  • Device and method for producing synthetic gas by multi-nozzle gasification furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Such as Figure 4 As shown, the process condition of "single burner + ultra-dense phase coal transportation" is adopted. The single burner is the traditional three-channel pulverized coal burner. The flow of pulverized coal is adjusted by the pressure difference. From above the slag water level, it is sprayed with chilled water and enters the water washing tower. The synthesis gas that removes most of the fine slag enters the torch, and the black water in the gasifier enters the high-pressure flash tank, the vacuum flash tank, and finally the sedimentation tank. Tank, in the settling tank, by adding flocculant, the coal slime settles at the bottom of the tank, pumped into the filter press for solid-liquid separation.

[0088] The startup process is as follows:

[0089] (1) Pulverized coal is ground and conveyed under pressure, and the pulverized coal is produced by CO 2 After the gas is brought into the bag filter, it enters the pulverized coal atmospheric pressure pu...

Embodiment 2

[0099] Such as Figure 5 As shown, the flow of pulverized coal driven by differential pressure has the disadvantage of unstable flow. By adding a frequency conversion magnetic screw conveyor to the pulverized coal transportation pipeline, the temperature control of the pulverized coal flow can be achieved.

[0100] The advantage of adopting frequency conversion magnetic screw conveyor is that on the one hand, it can ensure the stability of pulverized coal flow, and on the other hand, there is no waste of pulverized coal in differential pressure transportation, so that there is no excessive pulverized coal in the gasifier before ignition. Table 5 is the pulverized coal flow rate using the magnetic screw conveyor.

[0101] Table 5 Embodiment 2 Pulverized coal transportation process parameters

[0102]

[0103] The startup process is as follows:

[0104] (1) Pulverized coal is ground and conveyed under pressure. After the pulverized coal is brought into the bag filter by CO2...

Embodiment 3

[0113] Such as Figure 6 As shown, in order to increase the heat flux of the gasifier and improve the production capacity of the gasifier, the heat flux of the gasifier installed with a single burner burner is insufficient. The burners of the gasifier have been modified, and three The burner is integrated and installed on the burner plate, and at the same time, one water washing tower is transformed into two water washing towers, which reduces the dust content of the syngas.

[0114] Three burners and one ignition burner are installed on the burner plate, and screw conveyors are installed on the coal conveying pipeline. The speed parameters of the three screw conveyors are incorporated into the start-up program and the shutdown SIS program, Table 7 It is the relationship between the conveyor speed and the coal flow.

[0115] Table 7 Embodiment 3 Pulverized coal conveying process parameters

[0116]

[0117] The startup process is as follows:

[0118] (1) Pulverized coal ...

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Abstract

The invention discloses a device and a method for producing synthetic gas by a multi-nozzle gasification furnace. The device sequentially comprises a normal-pressure pulverized coal storage tank, a lock hopper and a feeding tank. A buffer tank and a spiral conveyor are sequentially connected between a discharging pipe at the bottom of the feeding tank and a burner. The spiral conveyor is sequentially connected with the burner and a gasification furnace. The gasification furnace is respectively connected with a water scrubber and a slag breaker. The bottom of the slag breaker is connected with a slag lock hopper. The water scrubber is sequentially connected with a high-pressure flash tank and a vacuum flash tank. The vacuum flash tank is connected with a tilting pan filter, and the tilting pan filter is connected with a settling tank. The pulverized coal heat can be concentrated, the pulverized coal flow can be quantitatively controlled, the pulverized coal conveying amount is increased, meanwhile, the heat flux and the combustion temperature are higher, and the water carrying amount of synthetic gas is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a device and method for producing synthesis gas by a multi-nozzle gasification furnace. Background technique [0002] my country's oil and natural gas resources are insufficient, and the characteristics of energy resources rich in coal, short of oil, and low in gas determine the great development of my country's coal chemical industry, and the coal gasification industry is the basic industry of coal chemical industry. Therefore, the level of coal gasification technology has a great impact on my country's coal chemical industry. The development of gasification is of great significance. my country introduced Texaco coal-water slurry pressurized gasification technology in the 1980s, and Shell dry coal powder pressurized gasification technology in 2001. At the same time, my country developed its own fixed gasification technology. Bed oxygen-enriched gasification technology, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46C10J3/50C10J3/84C02F9/10
CPCC02F1/001C02F1/06C02F9/00C02F2001/007C10J3/466C10J3/506C10J3/84C10J2300/093C10J2300/0959C10J2300/1615C10J2300/1625C10J2300/169
Inventor 郭文林李伟斌姚根有潘登峰朱浩尹进袁悦婷胡慧敏孟迎张洪武
Owner HUAYANG NEW MATERIAL TECH GRP CO LTD
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