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Special purifying device for burning tail gas of biomass boiler

A biomass fuel and boiler combustion technology, which is applied in the direction of combined devices, chemical instruments and methods, and the separation of dispersed particles, can solve the problems of uneven exhaust gas showering, affecting dust removal and smoke removal effects, and achieves compact structure and smoke removal. good effect

Inactive Publication Date: 2015-04-08
FUJIAN LVYUAN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the water outlet of the spray pipe 5 is spaced, the exhaust gas is not evenly sprayed, and some exhaust gas does not reach, which affects the final dust and smoke removal effect

Method used

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  • Special purifying device for burning tail gas of biomass boiler
  • Special purifying device for burning tail gas of biomass boiler
  • Special purifying device for burning tail gas of biomass boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1, such as figure 2 , 3 Shown in , 4, a kind of special-purpose purifying device of combustion tail gas of biomass fuel boiler is to improve on the existing purifying device, and the existing simple spray pipe is changed into spray pipe 5 and deflector 6 to form spray pipe. The shower device, specifically as shown in the figure, includes a housing 4, an air inlet pipe 1, an air outlet pipe 2, a partition 3, and a spray device. Its upper part is composed of two angled deflectors 6, the spray holes 51 of the spray pipe 5 are evenly spaced on both sides of the top of the spray pipe 5, and the top of the inside of the casing 4 above the spray pipe 5 is fixed with Deflector 6, the center line of nozzle hole 51 has intersection with deflector 6, spray pipe 5 and water pump join, water pressure size is decided by the length of spray pipe 5, as long as can guarantee that each nozzle hole 51 all has Water can go out, and the hydraulic pressure of the present invention...

Embodiment 2

[0024] Example 2, such as Figure 5 , 6As shown, improvement is made on the basis of Embodiment 1. The partition 3 is composed of a transverse partition 31 and a vertical partition 32. A transverse partition 31 and 2-3 longitudinal partitions 32 connect the housing 4 inner cavity Divided into 6-8 smoke chambers, the direction of the exhaust gas is shown by the arrow in the figure, that is, the exhaust gas enters from the intake pipe 1 and alternately passes through each smoke chamber from above or below and then is discharged from the outlet pipe 2. When passing through below, a spray device is fixed under the partition. In the figure, a transverse partition 31 and two longitudinal partitions 32 divide the inner cavity of the shell 4 into 6 smoke passage chambers. The inner wall is fixed, the lower end is immersed in the water in the lower part of the shell, and a through hole 312 is opened in the upper part, so that two adjacent smoke passage chambers communicate with each o...

Embodiment 3

[0025] Example 3, such as Figure 7 As shown, a longitudinal partition is added on the basis of embodiment 2, that is, a transverse partition 31 and three longitudinal partitions 32 divide the inner cavity of the housing 4 into 8 smoke passage chambers, and the upper end of the transverse partition 31 and the housing The inner wall of 4 is fixed, the lower end is immersed in the water in the lower part of the shell, and a through hole 312 is opened in the upper part to communicate with two adjacent smoke chambers. The through holes 312 are fixed with deflectors 311 at an oblique angle to the transverse partition 31. After the exhaust gas enters the first chamber from the intake pipe 1, it is guided into the second chamber by the deflector 311 on the through hole above the diaphragm 31 between the first chamber and the second chamber. The upper end of the intermediary partition 32 is fixedly connected to the inner wall of the housing 4, the lower end is open, and there is a dis...

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Abstract

The invention relates to a boiler, and in particular relates to a special purifying device for burning tail gas of a biomass boiler. The special purifying device for the burning tail gas of the biomass boiler comprises a shell, an air inlet pipe, an air outlet pipe, a partition plate and a spraying device, wherein the lower part of the shell is provided with a slag discharging port. The special purifying device has the key points that the spraying device consists of a spraying pipe and two guide plates which are arranged above the spraying pipe and form an angle, spraying holes in the spraying pipe are uniformly formed in two sides of the top end of the spraying pipe at intervals, the inner top part of the shell which is right above the spraying pipe is fixedly provided with a flow guide plate, the spraying pipe is connected with a water pump, and the liquid in the spray hole can be sprayed onto the surface of the flow guide plate. The special purifying device is slightly altered, so that the cost is hardly increased, the existing linear spraying system is improved to be a planar spray system, two water curtains are formed, the dust removal effect can be improved, the movement direction of the gas can be continuously changed through the reasonable distribution of the flow guide plate and an air passing chamber, the turbulence of the gas is increased, and the dust removal effect can be further enhanced.

Description

technical field [0001] The invention relates to a boiler, in particular to a special purification device for combustion tail gas of a boiler burning solid biomass fuel. Background technique [0002] The so-called biomass fuels are mostly stem crops, peanut shells, bark, sawdust and solid waste (furfural residue, edible fungus residue, etc.) The sulfur content is low, so the tail gas only needs to go through a purification device for dust removal and smoke removal to meet the national emission standards. Existing purification devices such as figure 1 As shown, it is composed of a housing 4, an air intake pipe 1, an air outlet pipe 2, a partition 3, and a spray pipe 5. The lower part of the housing stores water, and the water is supplied to the spray pipe 5 by a water pump for recycling. Usually, there are 3 A partition 3 forms four chambers, and the lower part of the housing 4 is provided with a slag discharge port 41. One of the partitions is fixed below the housing 4, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00
Inventor 林祖顺林旭
Owner FUJIAN LVYUAN NEW ENERGY TECH