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CN-224226954-U - Solid powder pump pressurized entrained flow gasification system

CN224226954UCN 224226954 UCN224226954 UCN 224226954UCN-224226954-U

Abstract

The utility model discloses a solid powder pump pressurized entrained-flow bed gasification system which comprises a preparation unit, a solid powder pump and a gasification furnace. The preparation unit is used for preparing and storing powder, wherein the powder is stored in the form of a gas-solid mixture. The gasifier includes an inlet and an outlet. The solid powder pump is connected between the preparation unit and the inlet of the gasifier through the feeding channel and is used for continuously pressurizing and conveying the powder of the preparation unit to the gasifier through the solid powder pump. The gasification furnace converts powder into crude synthesis gas through gasification reaction and discharges the crude synthesis gas from an outlet, compared with a traditional entrained flow gasification system, the structure is simplified, complicated locking bucket pressurizing and pressure relief operation steps of a powder conveying system are omitted, the continuity of solid powder conveying is ensured, the working efficiency of the entrained flow gasification system is improved, and meanwhile, gas resources are saved.

Inventors

  • WEI NING
  • REN XIANGKUN

Assignees

  • 北京君益佳科技发展有限责任公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (9)

  1. 1. A solid powder pump pressurized entrained flow gasification system, comprising: A preparation unit (1) for preparing and storing a powder, wherein the powder is stored in the form of a gas-solid mixture; a gasifier (2) comprising an inlet and an outlet; And a solid powder pump (3) connected between the preparation unit (1) and the inlet of the gasification furnace (2) through a feeding channel (31), and suitable for continuously pressurizing and conveying the powder of the preparation unit (1) to the gasification furnace (2).
  2. 2. The solid powder pump pressurized entrained-flow gasification system according to claim 1, wherein the preparation unit (1) comprises a grinding device (11) and a powder bin (12), the grinding device (11) is communicated with a feed inlet of the powder bin (12) through a feed channel (111), a discharge outlet of the powder bin (12) is communicated with the feed channel (31), wherein powder prepared by the grinding device (11) is conveyed to the feed channel (111) through gas.
  3. 3. The solid powder pump pressurized entrained-flow gasification system according to claim 2, characterized in that the discharge opening of the powder bin (12) is provided with a second gas line (121), the second gas line (121) being adapted to intermittently introduce a loosening gas (122) into the discharge opening.
  4. 4. A solid powder pump pressurized entrained flow gasification system according to claim 3, characterised in that a first gas line (32) is connected to the feed channel (31), the connection point of the feed channel (31) and the first gas line (32) forms a first node (301), the first node (301) is located between the solid powder pump (3) and the gasifier (2), and the first gas line (32) is adapted to introduce high pressure gas (33) into the feed channel (31).
  5. 5. The pressurized entrained-flow gasification system with a solid powder pump as claimed in claim 4, wherein the gas introduced into the first gas line (32) and the second gas line (121) is one of nitrogen, carbon dioxide, carbon monoxide, hydrogen, methane and superheated steam, or a mixture of two or more of them.
  6. 6. The solid powder pump pressurized entrained-flow gasification system according to claim 1, characterized in that an inlet of the gasification furnace (2) is communicated with the feeding channel (31) through a burner (21), a first feeding port and a second feeding port are arranged on the burner (21), the first feeding port is suitable for introducing spent fuel gas (211) into the burner (21), and the second feeding port is suitable for introducing medium-pressure oxygen (212) into the burner (21).
  7. 7. The solid powder pump pressurized entrained-flow gasification system according to claim 1 or 2, further comprising a cooling unit (4) and a washing unit (5), the cooling unit (4) and the washing unit (5) being connected in sequence downstream of the outlet of the gasification furnace (2).
  8. 8. The solid powder pump pressurized entrained-flow gasification system as claimed in claim 7, wherein the scrubbing unit (5) is a scrubbing tower, the scrubbing tower is communicated with a quench chamber water inlet of the gasification furnace (2) through a first liquid supply pipeline (61), and a liquid pump (62) is arranged on the first liquid supply pipeline (61).
  9. 9. The solid powder pump pressurized entrained-flow gasification system according to claim 8, characterized in that the cooling unit (4) is a venturi desuperheater, the water inlet of which is in communication with the first liquid supply line (61) via a second liquid supply line (63), and the communication point forms a second node (601), the liquid pump (62) being located between the second node (601) and the scrubber.

Description

Solid powder pump pressurized entrained flow gasification system Technical Field The utility model relates to the technical field of entrained-flow bed gasification processes, in particular to a solid powder pump pressurized entrained-flow bed gasification system. Background With the development of clean energy and green chemical technology, gasification technology is becoming more and more important as an important way for efficiently utilizing solid fuels such as coal and biomass. Entrained flow gasification is the first choice for numerous industrial gasification applications due to its higher reaction efficiency, good material mixing and lower operating temperature, and is widely applied to the fields of chemical industry, electric power, city gas and the like. However, the existing entrained flow gasification process still has a plurality of technical bottlenecks in the aspects of conveying and pressurizing solid raw materials, and the efficiency and flexibility of the gasification process are limited. In a traditional entrained flow gasification system, solid raw materials need to be sent into a gasification furnace through a pneumatic conveying system, the pneumatic conveying system generally comprises a normal pressure pulverized coal storage bin, a pulverized coal lock hopper, a feeding tank (blanking tank) and the like, the process flow is that qualified pulverized coal from a pulverized coal preparation system is sent into the normal pressure pulverized coal storage bin through pneumatic conveying, pulverized coal in the normal pressure pulverized coal storage bin is sent into the feeding tank through the pulverized coal lock hopper according to a certain sequential control flow, the pulverized coal is sent into the gasification furnace to participate in reaction through controlling the pressure difference of the feeding tank and the gasification furnace, the sequential control flow of the pulverized coal lock hopper generally comprises four circulating steps of feeding, pressurizing, blanking and pressure relief, specifically, firstly, the channel between the feeding tank and the pulverized coal lock hopper is closed, after the pressure relief of the pulverized coal lock hopper is carried out, the channel between the normal pressure pulverized coal storage bin and the pulverized coal lock hopper is opened, powder in the pulverized coal lock hopper is conveyed into the pulverized coal lock hopper through gravity, afterwards, the channel between the normal pressure storage bin and the pulverized coal lock hopper is closed, the channel between the pulverized coal lock hopper is pressurized after the internal pressure of the pulverized coal lock hopper meets the requirement, the pressure difference between the pulverized coal lock hopper and the gasification furnace is controlled by controlling the pressure difference, the pneumatic conveying system can not be continuous, and the solid material can be gasified by the continuous air flow can be guaranteed, and the complicated gas can be conveyed by the air flow, and the gasification system can not be transported by the complicated steps, and the continuous air can be transported by the pneumatic system, and the gasification system can be expected, and the gasification can be expected, and the raw materials can be transported by the continuous, and the material can be transported by the pressure and the air can be transported by the pressure and the air. More importantly, the traditional entrained flow gasification conveying mode, namely dense phase conveying, has low conveying pressure, is generally about 4.0MPa, and has higher comprehensive energy consumption in most chemical processes of high-pressure synthesis. Disclosure of utility model In view of the above, the utility model provides a solid powder pump pressurized entrained-flow gasification system, which aims to solve the problems that the conventional entrained-flow gasification system has a complex structure, the gas conveying powder control steps are complicated, the continuity of solid raw material conveying cannot be ensured, the working efficiency of the entrained-flow gasification system is low, and a large amount of gas resources are consumed. The utility model provides a solid powder pump pressurized entrained-flow bed gasification system, which comprises: A preparation unit for preparing and storing a powder, wherein the powder is stored in the form of a gas-solid mixture; A gasifier including an inlet and an outlet; the solid powder pump is connected between the preparation unit and the inlet of the gasifier through a feeding channel and is suitable for continuously conveying the powder of the preparation unit to the gasifier. Optionally, the preparation unit includes milling equipment and powder storehouse, milling equipment pass through the material loading passageway with the feed inlet intercommunication in powder storehouse, the discharge gate in powder storehouse with the mat