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Fuel gas natural circulation waste heat boiler

A natural circulation, waste heat boiler technology, applied in steam boilers, steam boiler accessories, components of steam boilers, etc., can solve the problems of unsatisfactory heat absorption, unsatisfactory furnace insulation effect, and small contact area of ​​rising pipes, etc. The effect of shortening the contact distance, realizing recovery, and improving the heat recovery rate

Inactive Publication Date: 2016-01-20
JIANGSU GREENLEAVES BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a gas-fired natural circulation waste heat boiler to solve the problems existing in the prior art, such as relatively unsatisfactory heat absorption due to the small surface contact area of ​​the riser tube, and unsatisfactory heat preservation effect of the furnace body.

Method used

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  • Fuel gas natural circulation waste heat boiler

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Experimental program
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Effect test

Embodiment 1

[0015] A gas natural circulation waste heat boiler, such as figure 1 , including furnace body 1, steam drum 2, gas channel 3, several ascending pipes 4, upper header 5, lower header 6, downcomer 7, steam drum 2 and gas channel 3 are located in furnace body 1, steam drum 2 Located above the gas channel 3, the steam drum 2 is respectively provided with a water inlet pipe and a steam outlet 11, and a steam-water separator is provided inside the steam drum 2, and one end of the downcomer 7 is connected to the steam drum 2, and the other end of the downcomer 7 is connected to the lower header 6. There are a number of ascending pipes 4 connected between the lower header 6 and the upper header 5. The ascending pipes 4 are arranged in the gas channel 3. The ascending pipes 4 are vertical pipes arranged in parallel. The upper header 5 is connected to the steam-water separator through pipes. The outer surface of the rising pipe 4 is provided with a honeycomb structure formed by several ...

Embodiment 2

[0019] The structure of the second embodiment is basically the same as that of the first embodiment. The difference between the second embodiment and the first embodiment is that the riser 4 is also provided with a spiral thin steel strip.

Embodiment 3

[0021] The structure of the third embodiment is basically the same as that of the first embodiment. The difference between the third embodiment and the first embodiment is that the rising pipe 4 is also provided with sawtooth blades, and the sawtooth blades form a spiral shape.

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Abstract

The invention provides a fuel gas natural circulation waste heat boiler. The fuel gas natural circulation waste heat boiler comprises a boiler body, a steam drum, a fuel gas channel, a plurality of riser tubes, an upper header, a lower header and a downcorner, wherein the steam drum and the fuel gas channel are arranged in the boiler body, honeycomb structures formed by a plurality of grooves are arranged on the outer surfaces of the riser tubes, a thermal insulating layer is arranged outside the boiler body, and the thermal insulating layer is sequentially provided with a rock wool layer, a glass fiber cloth layer, an aluminum silicate needled felt layer from the inside to the outside. Through arranging the honeycomb structures formed by the plurality of grooves on the outer surfaces of the riser tubes, the contact area of the riser tubes with fuel gas in the fuel gas channel can be increased, the exchange and utilization of waste heat are better facilitated, and the heat recovery rate can be effectively improved.

Description

technical field [0001] The invention relates to a gas natural circulation waste heat boiler. Background technique [0002] Waste heat boiler, as the name implies, refers to a boiler that uses waste heat in waste gas, waste or waste liquid in various industrial processes and the heat generated by the combustion of combustible substances to heat water to a certain temperature. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with smoke boxes and flue waste heat recovery are also called waste heat boilers. Waste heat boilers can produce hot water or steam for use in other sections through waste heat recovery. [0003] However, in the existing waste heat boilers, due to the small surface contact area of ​​the rising tube, the heat absorption is relatively unsatisfactory, and the heat preservation effect of the furnace body is not ideal. The above problems should be considered and solved in the design and production process of waste heat boilers. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/18F22B37/12
Inventor 周新良周昊
Owner JIANGSU GREENLEAVES BOILER
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