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Double-drum double-furnace composite-combustion settling chamber corner tube boiler

A technology for burning settling chambers and corner tube boilers, which is applied in the direction of combustion chambers, combustion methods, and combustion equipment. It can solve problems such as insufficient combustion, safety accidents, and low boiler strength, and achieve simple structure, reduced emissions, and improved thermal efficiency. Effect

Pending Publication Date: 2019-05-10
HARBIN SIFANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently biomass boilers generally have high water content and low calorific value in terms of the use of biomass fuel and boiler structure. However, existing boilers cannot directly bundle and burn biomass fuel with high water content. It can be burned after the water is dry, which increases the cost of use, insufficient combustion, and serious slagging; the boiler has low strength and weak support, which is easy to cause safety accidents; there is no settling chamber, the dust cannot settle, the concentration of nitrogen oxides is high, and the thermal efficiency of the boiler is low. Low

Method used

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  • Double-drum double-furnace composite-combustion settling chamber corner tube boiler

Examples

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Effect test

Embodiment 1

[0023] The invention provides a double-drum double-furnace composite combustion settling chamber corner tube boiler, such as figure 1 As shown, it includes the boiler body part and the combustion system part. Boiler furnace body part includes boiler body 1, six front side support downpipes 7, throttle ring I6, intermediate support downpipe 25, throttle circle II26 and rear side support downpipes are vertically arranged around boiler body 1 and have the function of supporting and descending. Tube 30, throttling ring III 28, upper drum 3 and lower drum 36 are set on one side of boiler body 1, the upper drum 3 and lower drum 36 are connected by convection tube bundle 33, and the inlet connected to upper drum 3 Water pipe 2, water outlet header 27, downcomer I4, downcomer II5, downcomer III29, and upper return pipe 21, side water wall upper header 20, side water wall 9, side water wall lower header 40, water cooling air chamber Membrane wall header 13, water-cooled air chamber me...

Embodiment 2

[0032] This embodiment is a further improvement made on the basis of Embodiment 1, including all the technical features of Embodiment 1, such as figure 2 As shown, the combustion equipment is a chain grate.

[0033] The working process and principle of the present invention are as follows: firstly, the biomass particles and coal fall on the fire grate 42 under the action of gravity, and are sent into the furnace II 37 for combustion under the action of mechanical power, and the heat generated is water-cooled by the front arch of the furnace The wall 10, the rear arch water wall 32, and the side water wall 9 absorb, and the heat and high-temperature flame generated at the same time will bundle the biomass fuel in the biomass combustion chamber 17 through the stretched tube bent at the lower part of the front arch water wall 10. Biomass fuel, granular material, etc. are dried to burn, and the heat generated is also absorbed by the front arch water wall 10, the rear arch water w...

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Abstract

The invention discloses a double-drum double-furnace composite-combustion settling chamber corner tube boiler. The boiler comprises a boiler furnace body part and a combustion system part; a supporting structure and a double-furnace structure are arranged in a boiler body; the supporting structure comprises a front side support downcomer, a middle support downcomer and a rear side support downcomer which are vertically arranged, the two ends of each of the front side support downcomer, the middle support downcomer and the rear side support downcomer are connected with a side water cooling wallupper header and a side water cooling wall lower header respectively, wherein the side water cooling wall upper header and the side water cooling wall lower header are horizontally arranged; one sideof the boiler body is provided with an upper drum and a lower drum which are connected through a convection tube bank, the upper end of the upper drum is connected with a water inlet pipe, and the bottom of the upper drum is connected with a downcomer I, a downcomer II and a downcomer II which communicate with the front side support downcomer, the middle support downcomer and the rear side support downcomer respectively; and the double-furnace structure is composed of a furnace I and a furnace II. The boiler has the characteristics that the supporting strength is high, the structure is stable, biomass fuel can be dried in the furnaces, the fuel can be directly bundled and fully combusted, emission of nitrogen oxides is reduced, the energy is saved and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular, it can meet the discharge requirements of the national boiler air pollutant discharge standards, and solve the problems of high moisture content, low calorific value, inability to burn directly, insufficient combustion, serious slagging, and nitrogen oxidation after bundling biomass. A double-drum double-furnace compound combustion settling chamber corner tube boiler with high pollutant emission concentration and polluting the environment. Background technique [0002] As we all know, with society's increasing demand for energy, fossil fuels as the main energy source are rapidly decreasing. Therefore, looking for a renewable alternative energy source has become the focus of widespread concern in society. Biomass energy is an important renewable energy, which has the characteristics of green, low carbon, clean and renewable. Accelerating the development and utilization of biomass ...

Claims

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Application Information

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IPC IPC(8): F24H1/40F24H9/00F24H9/18F23M5/08
Inventor 宫明月孙宇鹏孙伟东
Owner HARBIN SIFANG BOILER
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