CN200952701Y

CN200952701Y - Powder coal multicirculating fluid bed gasification apparatus

Info

Publication number: CN200952701Y
Application number: CN 200620113142
Authority: CN
Inventors: 董久明
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-26
Filing date: 2006-04-26
Publication date: 2007-09-26
Anticipated expiration: 2016-04-26

Abstract

The utility model discloses a powdered coal multi-circulating fluidized bed gasification device, including a housing, an air transport device and a cyclone separator, wherein the air transport device is positioned outside of the housing; the cyclone separator is positioned inside the upper part of the housing; the upper part of the housing is equipped with a separating and settling chamber; the outlet of the air transport device is positioned inside the separating and settling chamber; the gasification bed is positioned in the lower part of the housing; a connecting pipe is equipped between the separating and settling chamber and the gasification bed; the upper part of the housing is equipped with a synthetic gas and flue gas outlet; the middle part of the housing is equipped with a coke breeze inlet, the mid lower part of the housing is equipped with a steam and oxidant inlet; the lower part of the housing is equipped with an ash burnt outlet; the air transport device is equipped with a coke breeze, steam and oxidant inlet which is connected with the gasification bed. The utility model is simply structured and able to realize multi-circulating gasification, provided with wide range of adaptation and high gasification efficiency.

Description

The how ciculation fluidized bed gasifying apparatus of fine coal

Technical field:

The utility model relates to a kind of gasification installation, the how ciculation fluidized bed gasifying apparatus of particularly a kind of fine coal.

Background technology:

The general structure of existing gasifying powder coal device is comparatively complicated, and mostly is the single cycle fluidized gasification, and gasification efficiency is low, poor product quality, operating cost height.

Summary of the invention:

The purpose of this utility model just is to overcome weak point of the prior art, provides a kind of simple in structure, can realize many cycle gasifications, gasification efficiency height, good product quality, the low how ciculation fluidized bed gasifying apparatus of fine coal of operation operating cost.

The purpose of this utility model is to realize like this, comprise: housing, Pneumatic conveyer, cyclone separator, Pneumatic conveyer is positioned at the outside of housing, cyclone separator is positioned at the inside of housing top, the top of housing is provided with the separate and subside chamber, the outlet of Pneumatic conveyer is positioned at the inside of separate and subside chamber, gasifier bed is positioned at lower part of frame, be provided with communicating pipe between separate and subside chamber and the gasifier bed, the top of housing is provided with synthesis gas and exhanst gas outlet, the middle part of housing is provided with the coke powder inlet, the middle and lower part of housing is provided with steam, oxidant inlet, lower part of frame is provided with the burnt outlet of ash, and Pneumatic conveyer is provided with the coke powder that links to each other with gasifier bed, steam, oxidant inlet.

The purpose of this utility model can realize that also the communicating pipe between separate and subside chamber and the gasifier bed upward and between gasifier bed and the Pneumatic conveyer is provided with valve by following technical measures, and Pneumatic conveyer is many groups.

Compared to existing technology, the utlity model has simple in structurely, can realize many cycle gasifications, wide accommodation, gasification efficiency height, good product quality, advantage such as the operation operating cost is low.

Description of drawings:

Fig. 1 is the utility model structural representation

The specific embodiment:

Below in conjunction with drawings and Examples in detail the utility model is described in detail, comprise: housing 20, Pneumatic conveyer 3, cyclone separator 11, Pneumatic conveyer 3 is positioned at the outside of housing 20, cyclone separator 1 is positioned at the inside of housing 20 tops, the top of housing 20 is provided with separate and subside chamber 6, the outlet of Pneumatic conveyer 3 is positioned at the inside of separate and subside chamber 6, gasifier bed 21 is positioned at the bottom of housing 20, be provided with communicating pipe 4 between separate and subside chamber 6 and the gasifier bed 21, the top of housing 20 is provided with synthesis gas and

exhanst gas outlet

10,7, the middle part of housing 20 is provided with coke powder inlet 12, the middle and lower part of housing 20 is provided with steam,

oxidant inlet

13,14, the bottom of housing 20 is provided with the burnt outlet 19 of ash, and Pneumatic conveyer 3 is provided with the coke powder that links to each other with gasifier bed 21, steam,

oxidant inlet

15,1,2,17,18.Be provided with

valve

5,16 on communicating pipe 4 between separate and subside chamber 6 and the gasifier bed 21 and between gasifier bed 21 and the Pneumatic conveyer 3, Pneumatic conveyer 3 is many groups.

Operation principle of the present utility model is, fugitive constituent is less than 10% half high temperature coke powder after the pyrolysis, coke powder inlet 12 by gasifier bed 21 enters, in gasifier bed 21 with under the gasification reaction limit, steam limit, move, temperature reduces gradually when arriving the bottom, and carry out heat exchange with the steam that has just entered, the outlet that links to each other with the Pneumatic conveyer 3 15 pressured differences that enter after the heat exchange by valve 16 controls enter Pneumatic conveyer 3, move up with oxidizing fire exothermic reaction limit, oxidant limit, arriving top portion is heated to about 950 ℃ from expansion chamber 6, and enter in the gasifier bed 21 by valve 5 control by communicating pipe 4 and to gasify, coke powder after the gasification progressively moves down, under the drive of Pneumatic conveyer 3, turn back in the separate and subside chamber 6 again then, so repeatedly circulation, the fine coal and the steam gasification endothermic reaction are carried out in dense-phase fluidized bubbling gasifier bed 21 like this, and the oxidizing fire exothermic reaction is carried out in dilute-phase pneumatic conveying device 3, both link to each other up and down and work in coordination, many cycle gasification reactions of fine coal have been realized, burning, gasification can reciprocally be carried out in Pneumatic conveyer 3 and gasifier bed 21, equally at steam, make coke powder at Pneumatic conveyer 3 under the effect of oxidant, carry out the Multiple Cycle gasification reaction in the gasifier bed 21, the high-temperature flue gas that gasification back produces enters waste heat boiler 9 and carries out energy recovery by exporting 7 after cyclone separator 11 separates, the steam that produces is incorporated steam pipe system into, the synthesis gas that produces enters down road Chemical Manufacture operation 8 by exporting 10, at last that the solid phase phosphorus content is lower ash is burnt sends into CFBB by the burnt outlet 19 of ash under its operating temperature, reach the valve 5 between gasifier bed 21 and the Pneumatic conveyer 3 on communicating pipe 4 between separate and subside chamber 6 and the

gasifier bed

21,16, can control and regulate the decrease speed and the flow of fine coal, the utility model is simple in structure, can realize many cycle gasifications, wide accommodation, the gasification efficiency height, good product quality, the operation operating cost is low, is the ideal device of existing coal gasification.

Claims

1, the how ciculation fluidized bed gasifying apparatus of a kind of fine coal, comprise: housing, Pneumatic conveyer, cyclone separator, it is characterized in that: Pneumatic conveyer is positioned at the outside of housing, cyclone separator is positioned at the inside of housing top, the top of housing is provided with the separate and subside chamber, the top outlet of Pneumatic conveyer is positioned at the inside of separate and subside chamber, gasifier bed is positioned at lower part of frame, be provided with communicating pipe between separate and subside chamber and the gasifier bed, the top of housing is provided with synthesis gas and exhanst gas outlet, the middle part of housing is provided with the coke powder inlet, the middle and lower part of housing is provided with steam, oxidant inlet, lower part of frame is provided with the burnt outlet of ash, and the Pneumatic conveyer bottom is provided with steam, oxidant, the coke powder import that links to each other with gasifier bed.

2, according to the how ciculation fluidized bed gasifying apparatus of claims 1 described fine coal, it is characterized in that: the communicating pipe between separate and subside chamber and the gasifier bed upward and between gasifier bed and the Pneumatic conveyer is provided with valve.

3, according to the how ciculation fluidized bed gasifying apparatus of claims 1 described fine coal, it is characterized in that: Pneumatic conveyer is many groups.