Circulating fluid bed ash pneumatic control distributing valve

A circulating fluidized bed, pneumatic control technology, applied in fluidized bed combustion equipment, fuel burning in molten state, lighting and heating equipment, etc., can solve the problems of easy jamming, easy wear and high material grade

Active Publication Date: 2007-03-21
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of mechanical valves are excellent adjustment characteristics and flexible operation control and adjustment; however, due to long-term work at high temperatures, mechanical valves have complex structures, easy jamming, easy wear, high material grades, and expensive

Method used

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  • Circulating fluid bed ash pneumatic control distributing valve
  • Circulating fluid bed ash pneumatic control distributing valve
  • Circulating fluid bed ash pneumatic control distributing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Fig. 1 is the structural schematic diagram of embodiment 1; As can be seen from the figure, the structure of the circulating fluidized bed circulating ash pneumatically controlled distributing valve of the present embodiment is as follows:

[0023] A vertical splitter plate 2 is arranged directly under the material leg 1 of the high-temperature gas-solid separator of the circulating fluidized bed combustion device, and a first feed chamber 3 and a second feed chamber 5 are respectively arranged on both sides, the upper part of the two chambers is connected, and the bottom surface At the same level, the vertical dividing plate 2 divides the projection of the separator material leg 1 on the bottom surface of the two chambers into two parts; it also includes the first discharge chamber 4 and the second discharge chamber 6; the first feed chamber 3 It communicates with the bottom of the first discharge chamber 4 through the first horizontal hole 9, and the upper part of the ...

Embodiment 2

[0025] Fig. 2 is the structural schematic diagram of embodiment 2; As can be seen from the figure, the structure of the circulating fluidized bed circulating ash pneumatically controlled distributing valve of the present embodiment is as follows:

[0026] A vertical splitter plate 2 is arranged directly under the material leg 1 of the high-temperature gas-solid separator of the circulating fluidized bed combustion device, and a first feed chamber 3 and a second feed chamber 5 are respectively arranged on both sides, the upper part of the two chambers is connected, and the bottom surface At the same level, the vertical dividing plate 2 divides the projection of the separator material leg 1 on the bottom surface of the two chambers into two parts; it also includes the first discharge chamber 4 and the second discharge chamber 6; the first feed chamber 3 It communicates with the bottom of the first discharge chamber 4 through the first horizontal hole 9, and the upper part of the ...

Embodiment 3

[0028] Fig. 3 and Fig. 4 are the structural schematic diagrams of embodiment 3; As can be seen from the figures, the structure of the circulating fluidized bed circulating ash pneumatic control distribution valve of the present embodiment is as follows:

[0029]The pneumatic control distribution valve is composed of 4 pipe sections, the first pipe section is concentric with the high temperature gas-solid separator material leg 1 of the circulating fluidized bed combustion device, and is located directly below the separator material leg 1, and the second pipe section is connected to the first section The bottom surface of the pipe section is on the same horizontal plane, part of which is located inside the first pipe section, forming a vertical arc-shaped splitter plate 2, which divides the interior of the first pipe section into the first feeding chamber 3 and the second feeding chamber 5, and the upper part of the two chambers The second feed chamber 5 is the part inside the f...

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Abstract

The present invention relates to a circulating fluid-bed circulating ash pneumatic control distribution valve. It includes the following several portions: high-temperature gas-solid separator, vertical breaker plate, first and second feeding chambers, first and second discharging chambers, first and second overflow holes, air distribution plate and air chamber. Said invention also provides the connection mode of all the above-mentioned portions and the working principle of said circulating ash pneumatic control valve.

Description

technical field [0001] The invention relates to a circulating ash flow control device in a circulating fluidized bed combustion device, in particular to a pneumatically controlled distribution valve. Background technique [0002] In circulating fluidized bed boilers and circulating fluidized bed incinerators with external heat exchangers, and multi-generation systems with circulating fluidized beds as the core, it is necessary to distribute and control the high-temperature circulating ash separated by the separator. Part of the ash is directly returned to the furnace, and the other part is sent to the external heat exchanger or gasifier. The current circulating ash distribution valve can be divided into two types: mechanical type and non-mechanical type. [0003] Mechanical valves mainly include conical valves widely used in Lurgi circulating fluidized bed boilers, and MSFB sliding plate gate valves. The advantages of mechanical valves are excellent adjustment characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/26F23C101/00
Inventor 吕清刚那永洁高鸣范晓旭包绍麟贺军
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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