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Cross blowback device of shell coal gasifier and fabrication method thereof

A coal gasification and cross technology, applied in the manufacture of combustible gas, petroleum industry, etc., can solve the problems of back blowing failure of back blower, easy blockage of back blowing air holes, etc., and achieve simplified structure and installation process, easy operation and simple installation Effect

Active Publication Date: 2014-03-19
柳州化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a shell coal gasifier cross blowback device for a cross blowback device that does not need to be cooled by water and its manufacturing method. The problem of backflushing failure of the backflushing device can avoid system shutdown due to ash accumulation in the superheated section of the gasifier, so as to ensure long-term stable operation of the gasifier

Method used

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  • Cross blowback device of shell coal gasifier and fabrication method thereof
  • Cross blowback device of shell coal gasifier and fabrication method thereof
  • Cross blowback device of shell coal gasifier and fabrication method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Embodiment 1: A kind of shell coal gasifier cross novel reverse blower, such as Figure 3-Figure 4 As shown, it includes the back blowing gas inlet main pipe 1 and 4 groups of soot blowing nozzles I2 respectively located on the cross hanger, and the soot blowing nozzles I are respectively connected with the back blowing gas inlet main pipe. The high-temperature-resistant nozzle, the soot blowing nozzle I includes a cylindrical nozzle body 21, the cylindrical nozzle body has a central through hole 22 in the axial center, and the cylindrical nozzle body has a central through hole in the radial direction. N groups of circumferential small holes 24 through which holes pass through, N=1, three circumferential small holes 24 whose centerlines are located on the same circumference as a group, and two adjacent circumferential small holes in the same group of three circumferential small holes The circumferential distance β is 45°. There are M oblique holes I23 connected with th...

Embodiment 2

[0058] Example 2: A new cross blower for Shell coal gasifier, its basic structure is the same as that of Example 1, the difference lies in the specific structure of the soot blowing nozzle I, in this embodiment, the soot blowing nozzle I is made of steel 310S High temperature resistant nozzle, the soot blowing nozzle I includes a cylindrical nozzle body 21, a central through hole 22 is opened in the axial center of the cylindrical nozzle body, and a central through hole is opened in the radial direction of the cylindrical nozzle body N groups of penetrating circumferential small holes 24, N=3, three circumferential small holes 24 whose centerlines are located on the same circumference as a group, the distance L2 between two adjacent groups of circumferential small holes is 4mm, the same group The circumferential distance β between two adjacent circumferential small holes among the three circumferential small holes is 45°. The body of the cylindrical nozzle is also provided wit...

Embodiment 3

[0062] Embodiment 3: A kind of manufacturing method of shell coal gasifier cross novel back blower, comprises the following steps:

[0063] A. The production of soot blowing nozzle Ⅰ, the steps are as follows:

[0064] A1. Take ￠30-70mm material as 310S round steel, and drill a ￠6-18mm central through hole 2 in the axial center of the round steel;

[0065] A2. On one end face of the round steel, drill M ￠3-6mm inclined holes Ⅰ3 that connect with the center through hole. The angle α between the center line of the inclined hole I and the center line of the center through hole is 35-60°, and the value of M is 1-10;

[0066] A3. Radial drilling N groups of ￠3-6mm circumferential small holes 4 connected with the central through hole. The number of circumferential small holes in each group is 1-4, and there are 2 adjacent circumferential small holes in the same group. The circumferential distance β of the circumferential small holes is 40-60°, the centerlines of the same group of ...

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Abstract

The invention relates to a cross blowback device of a shell coal gasifier and a fabrication method thereof. The blowback device comprises a blowback air inlet header pipe and at least four groups of blowing nozzles I, wherein the blowing nozzles I are respectively arranged on a cross hanger, and respectively communicated with the blowback air inlet header pipe; each blowing nozzle I is a heat-resisting nozzle fabricated by rolled steel 310S, and comprises a cylindrical nozzle body; a center through hole is formed on the cylindrical nozzle body along the axial center; a circumferential hole penetrating through the center through hole is formed on each cylindrical nozzle body in a radial manner; an inclined hole I penetrating through the center through hole is also formed on each cylindrical nozzle body. The nozzle disclosed by the invention is prepared from solid round steel in a manner of tapping at the corresponding position, can resist high temperature, and does not need to be cooled by water in a use procedure, and meanwhile, the problem that the blowback air hole is easily blocked, so that the blowback device loses efficacy in blowback is solved.

Description

technical field [0001] The invention relates to a reverse blower and a manufacturing method, in particular to a new type reverse blower for a Shell coal gasifier cross and a manufacturing method. Background technique [0002] The entrance of the superheating section of the Shell coal gasifier is a four-layer concentric ring pipe structure. The center of the innermost layer is blocked by a cover plate, so that the gas is not allowed to pass directly from the center, but passes between the concentric ring pipes of each layer, and is installed vertically. The cross hanger is the support, and the fly ash on the cross hanger will accumulate and eventually block the inlet of the superheating section, so a fly ash blowing device must be installed. The currently used fly ash blowing device is a cross soot blower with water cooling, such as Figure 1-Figure 2 shown. From the usage point of view, there are the following problems: [0003] 1. The soot blower forms a dead zone for blow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/72
Inventor 李兆胜杨文龙黄湛韦伟杨剑生余志焰廖银泉覃飞蒋新邓菁
Owner 柳州化工股份有限公司
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