CN211005268U

CN211005268U - Horizontal structure entrained flow gasification device

Info

Publication number: CN211005268U
Application number: CN201922075934.2U
Authority: CN
Inventors: 王鹏杰; 李小宇; 任永强; 徐越; 罗丽珍
Original assignee: Huaneng Clean Energy Research Institute
Current assignee: Huaneng Clean Energy Research Institute
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-14
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a horizontal entrained flow gasification device, which comprises a shell; the shell is in a T shape; a T-shaped space is formed in the shell and is used as a gasification furnace reaction chamber; the shell comprises a first end, a second end and a third end, wherein the first end is horizontally arranged, the second end is horizontally arranged, and the third end is vertically arranged; the two gasifier burners are horizontally arranged at the first end and the second end of the shell in an opposite mode and extend into the gasifier reaction chamber; a down pipe is arranged at the bottom of the third end of the shell; a chilling chamber is arranged at the periphery of the down pipe, a slag hole is arranged at the bottom of the chilling chamber, and a synthetic gas outlet is arranged at the upper part of the chilling chamber; the top of the shell is provided with a waste pot. The utility model is suitable for operating under lower pressure (about 1.0 MPa), and the treatment capacity is 50-200 tons/day; on one hand, the utility model has the advantages of low gasification pressure, small equipment and no generation of organic pollutants, and is particularly suitable for the gasification requirements of small chemical engineering; on the other hand, the steam boiler has a waste boiler structure, can generate a certain amount of steam, and further increases economic benefits.

Description

Horizontal structure entrained flow gasification device

Technical Field

The utility model belongs to the technical field of coal gasification, in particular to horizontal structure entrained flow gasification device.

Background

The current situation of coal as a main energy source is not changed in a long period of time due to the intrinsic endowment of rich coal, poor oil and little gas in China. The coal clean and efficient utilization technology is a main approach for solving the energy and environment problems, and the coal gasification technology is the most effective approach for clean and efficient conversion of coal. The dry coal powder gas flow bed adopts dry powder feeding, pure oxygen gasification, a water wall structure and liquid slag discharge, has good coal type adaptability, high carbon conversion rate in the gasification process and no organic pollutant, and is the most main direction for the development of the coal gasification technology.

The existing dry coal powder pressurized gasification furnace mainly comprises a shell furnace, a GSP furnace, an aerospace furnace, a Shenning furnace, a Huaneng two-section furnace and a five-ring furnace, wherein the above gasification furnaces all adopt vertical furnace bodies and are mainly characterized in that the operation pressure is high (2.0-6.5 MPa), the handling capacity is large (the single handling capacity is generally 750-3000 tons/day), the dry coal powder pressurized gasification furnace is mainly used in large chemical industry and is generally called as a large gasification furnace, while for some small chemical industry, the large entrained-flow bed gasification furnace can not meet the requirements, such as small nitrogen fertilizer industry and small synthetic ammonia industry, the pressure required by the gasification furnace is not high, the synthetic gas quantity is not too large, customers generally select a fluidized bed gasification furnace or a fixed bed gasification furnace, and the two gasification furnaces can generate a certain amount of organic pollutants in the use process and can not realize the clean utilization of coal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a horizontal structure entrained flow gasification equipment to solve above-mentioned technical problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a horizontal entrained flow gasification device comprises a shell;

the shell is in a T shape; a T-shaped space is formed in the shell and is used as a gasification furnace reaction chamber; the shell comprises a first end, a second end and a third end, wherein the first end is horizontally arranged, the second end is horizontally arranged, and the third end is vertically arranged;

the two gasifier burners are horizontally arranged at the first end and the second end of the shell in an opposite mode and extend into the gasifier reaction chamber;

a down pipe is arranged at the bottom of the third end of the shell; the periphery of the down pipe is provided with a chilling chamber, the bottom of the chilling chamber is provided with a slag hole, and the upper part of the chilling chamber is provided with a synthetic gas outlet.

Furthermore, the gasifier burner is an integrated burner.

Further, a waste pot is arranged at the top of the shell.

Furthermore, a water-cooled wall is arranged on the inner wall of the lower part of the shell and used for pre-cooling the high-temperature synthesis gas when the high-temperature synthesis gas passes through the water-cooled wall.

Furthermore, a chilling ring capable of forming a liquid film on the inner wall and the outer wall of the descending pipe is arranged on the descending pipe.

Further, the bottom of the quench chamber holds water.

Furthermore, the temperature of the reaction chamber of the gasification furnace is 1400-1800 ℃, and the reaction pressure is less than or equal to 1.0 MPa.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model relates to a horizontal structure entrained flow gasification device, which is suitable for running under lower pressure (about 1.0 MPa), and the treatment capacity is 50-200 tons/day; on one hand, the utility model has the advantages of low gasification pressure, small equipment and no generation of organic pollutants, and is particularly suitable for the gasification requirements of small chemical engineering; on the other hand, the steam boiler has a waste boiler structure, can generate a certain amount of steam, and further increases economic benefits.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an entrained flow gasifier of horizontal configuration.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.

Referring to fig. 1, the present invention provides a horizontal entrained flow gasifier, which mainly comprises a gasifier burner 1, a waste boiler 2, a gasifier reaction chamber 3, a water-cooled wall 4, a syngas outlet 5, a down pipe 6, a quench ring 7, a quench chamber 8, and a slag hole 9.

The shell of the gasification device is integrally T-shaped, and can be horizontally laid on the frame structure during hoisting, so that the gasification device is convenient to mount.

A T-shaped space is formed in the housing as a gasification furnace reaction chamber 3. The temperature in the reaction chamber 3 of the gasification furnace is 1400-1800 ℃, the reaction pressure is less than or equal to 1.0MPa, and slag is discharged in a liquid state.

Gasifier nozzle 1 is integration nozzle, mainly provides buggy passageway, oxygen passageway and the fuel passageway of opening one's life, possesses the ignition function of opening one's life, and quantity is two, and the level is arranged first end and the second end that sets up at the level of casing relatively to stretch into in gasifier reacting chamber 3.

A waste pot 2 is arranged at the top of the shell; the waste boiler 2 adopts a coil heat exchange surface structure, boiler water enters from a water wall inlet 201 and is discharged from an outlet 202, and heat is derived from heat radiation of a hearth.

The lower part of the shell is provided with a water-cooled wall 4; boiler water enters from a water wall inlet 401 and is discharged from an outlet 402, and high-temperature synthesis gas can play a pre-cooling role when passing through.

A down pipe 6 is arranged at the bottom of a third end of the vertical shell; a chilling chamber 8 is arranged at the periphery of the down pipe 6, and a slag hole 9 is arranged at the bottom of the chilling chamber 8; the gasified syngas enters a chilling chamber 8 through a downcomer 6, liquid films are hung on the inner wall and the outer wall of the downcomer and are provided by a chilling ring 7 arranged on the downcomer 6, chilling water continuously enters from

inlets

701 and 702 of the chilling ring, and the liquid films are formed on the inner wall and the outer wall of the downcomer to prevent the downcomer 6 from being burnt out due to over-temperature. The chilling chamber 8 keeps a certain liquid level, the synthesis gas enters a downstream working section through a synthesis gas outlet 5 at the upper part of the chilling chamber 8 after being cooled, and simultaneously liquid slag enters the chilling chamber 8 to form solid slag which enters downstream equipment through a slag hole 9.

The practical operation shows that the gasification furnace belongs to a low-pressure gasification furnace, and the material of the gasification furnace does not need to be selected from high-pressure material, so the manufacturing cost is greatly reduced; the gasification furnace is T-shaped, and is easier to hoist and mount compared with the existing vertical gasification furnace, so that the engineering installation cost is saved; when the gasification furnace operates, the pressure is 0-1.0 MPa and is adjustable, the temperature is about 1500 ℃, the coal powder feeding amount is 100 tons/day, and the synthetic gas 7000Nm can be produced³H, steam 1.5 t/h.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The horizontal entrained flow gasification device is characterized by comprising a shell;

the shell is in a T shape; a T-shaped space is formed in the shell to be used as a gasification furnace reaction chamber (3); the shell comprises a first end, a second end and a third end, wherein the first end is horizontally arranged, the second end is horizontally arranged, and the third end is vertically arranged;

the two gasifier burners (1) are horizontally arranged at the first end and the second end of the shell oppositely and extend into the gasifier reaction chamber (3);

a downcomer (6) is arranged at the bottom of the third end of the shell; a chilling chamber (8) is arranged at the periphery of the down pipe (6), a slag hole (9) is arranged at the bottom of the chilling chamber (8), and a synthetic gas outlet (5) is arranged at the upper part of the chilling chamber.

2. The horizontal entrained-flow gasification device of claim 1, wherein the gasifier burner (1) is an integrated burner.

3. A horizontal entrained flow gasifier as claimed in claim 1, wherein the top of the shell is provided with a waste boiler (2).

4. A horizontal entrained-flow gasifier as claimed in claim 1 wherein the lower internal wall of the shell is fitted with a water cooled wall (4) for pre-cooling the high temperature syngas as it passes through.

5. A horizontal entrained-flow gasifier as claimed in claim 1, characterized in that the downcomer (6) is equipped with quench rings (7) which form a liquid film on the inner and outer walls of the downcomer (6).

6. A horizontal entrained flow gasifier as claimed in claim 1, characterized in that the bottom of the quench chamber (8) is kept with water.