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Industrial pulverized coal boiler with double horizontal hearths arranged oppositely

A pulverized coal boiler, dual-level technology, which is applied to the combustion of multiple fuels, burners of powder fuels, combustion of lump fuels and liquid fuels, etc. problem, to achieve the effect of accelerating the cooling of the out-of-service furnace

Active Publication Date: 2021-04-09
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing industrial pulverized coal boiler needs to be shut down for maintenance when the burner and the furnace break down, resulting in the problem that it cannot run continuously for a long time, an industrial pulverized coal boiler based on a dual-level furnace hedging arrangement is proposed.

Method used

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  • Industrial pulverized coal boiler with double horizontal hearths arranged oppositely
  • Industrial pulverized coal boiler with double horizontal hearths arranged oppositely
  • Industrial pulverized coal boiler with double horizontal hearths arranged oppositely

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specific Embodiment approach 1

[0032] Specific implementation mode one: combine figure 1 and figure 2 To illustrate this embodiment, an industrial pulverized coal boiler with dual horizontal furnaces facing each other in this embodiment includes a burner 1, a No. 1 horizontal furnace 2, a flue gas baffle 5, a No. 1 flue gas recirculation tube bundle 6, a rising Furnace 8, No. 2 horizontal furnace 9, No. 2 flue gas recirculation tube bundle 10 and steam-water circulation unit;

[0033] One side of the rising furnace 8 is provided with a No. 1 horizontal furnace 2, and the other side of the rising furnace 8 is provided with a No. 2 horizontal furnace 9. Both the No. 1 horizontal furnace 2 and the No. 2 horizontal furnace 9 are connected to the rising furnace 8. Furnace 2 and No. 2 horizontal furnace 9 are arranged opposite to the ascending furnace 8, and the joints of No. 1 horizontal furnace 2 and No. 2 horizontal furnace 9 and ascending furnace 8 are provided with flue gas baffles 5, and the flue gas baff...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment. This embodiment is a further limitation on the industrial pulverized coal boiler described in the first specific embodiment. An industrial pulverized coal boiler with a double-level furnace opposed arrangement described in this embodiment. The steam-water cycle The unit includes No. 1 water wall outlet pipe 11, upper header 12, No. 1 upper grading header 13, No. 1 cooling water tank 14, upper header outlet pipe 15, lower header inlet pipe 16, lower header 17, and connecting branch pipe 19 , No. 1 water wall inlet pipe 20, No. 1 lower stage header 21, No. 1 cooling water pump 22, No. 2 cooling water pump 23, No. 2 lower stage header 24, No. 2 water wall inlet pipe 25, No. 2 water cooling Wall outlet pipe 26, No. 2 upper grading header 27 and No. 2 cooling water tank 28;

[0036] The upper part of the No. 1 horizontal furnace 2 is connected to the input port at the bottom of t...

specific Embodiment approach 3

[0040] Specific implementation mode three: combination figure 1 and figure 2 Describe this embodiment. This embodiment is a further limitation of the industrial pulverized coal boiler described in the second specific embodiment. An industrial pulverized coal boiler with a double-level furnace opposed arrangement described in this embodiment. The steam-water cycle Each pipeline in the unit is provided with a valve 18;

[0041] In this specific embodiment, a valve 18 is arranged on each pipeline in the steam-water circulation unit to facilitate the control of the steam-water circulation unit.

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Abstract

The invention discloses an industrial pulverized coal boiler with double horizontal hearths arranged oppositely, and relates to the field of industrial boiler equipment. The problems that when a combustor and a hearth of an existing industrial pulverized coal boiler break down, operation needs to be stopped for maintenance, and consequently long-time continuous operation cannot be implemented are solved. A first horizontal hearth and a second horizontal hearth are oppositely arranged; when a single hearth breaks down and needs to be overhauled, the corresponding smoke baffle is closed, so that smoke is isolated, and continuous operation of the other combustor and the corresponding hearth is not affected; the two horizontal hearths are provided with respective cooling water circulation branches, and circulating water cooling is rapidly performed on a water cooling wall, corresponding to the hearth, of the shutdown combustor, so that the interior of the shutdown hearth is rapidly cooled; the temperature is displayed through a temperature detection device; and when the temperature in the boiler reaches the room temperature, maintenance personnel can start maintenance work, and therefore the interior of the hearth is effectively maintained under the state that the boiler is not shut down, and the long-time continuous operation of the industrial pulverized coal boiler is ensured. The boiler is applicable to the field of industrial boiler equipment.

Description

technical field [0001] The invention relates to the field of industrial boiler equipment, in particular to an industrial pulverized coal boiler with double-level furnaces opposed to each other. Background technique [0002] Coal resources have always occupied a considerable proportion in my country's energy utilization. Coal-fired industrial boilers are the main coal-consuming equipment other than power plant boilers, with a total of nearly 600,000 units and an annual coal consumption of nearly 640 million tons. Coal-fired industrial boilers are widely used in industrial production, domestic heating, etc., especially in some northern regions, coal-fired industrial boilers are the main equipment for heating in winter. Compared with traditional layer-fired boilers, industrial pulverized coal boilers have gradually expanded their market share in coal-fired industrial boilers in recent years due to their high degree of automation, high boiler efficiency, and low pollutant emissi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/08F23C7/00F23M5/08F23D1/00
CPCF23C5/08F23C7/00F23D1/00F23M5/08
Inventor 陈智超袁振华张博李争起曾令艳
Owner HARBIN INST OF TECH
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