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Flue gas dust removal and desulfurization device

A desulfurization device and flue gas technology, applied in the direction of gas treatment, alkali metal sulfite preparation, separation methods, etc., can solve the problems of surrounding environmental pollution, poor desulfurization effect, low solution utilization rate, etc., and achieve good wet dust removal , Desulfurization effect is good, the effect of reducing production cost

Pending Publication Date: 2022-05-13
SHENZHEN JIAXIN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the flow direction of the flue gas and the sodium hydroxide solution ejected from the nozzle is the same in the desulfurization device of this structure, the solution utilization rate is low, and the desulfurization effect is not good; on the other hand, the absorbed solution is discharged in the form of waste liquid. The liquid will pollute the surrounding environment

Method used

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  • Flue gas dust removal and desulfurization device
  • Flue gas dust removal and desulfurization device
  • Flue gas dust removal and desulfurization device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] see figure 1 and figure 2 , the flue gas dedusting and desulfurization device includes an outer cylinder 2, a middle cylinder 3 and an inner cylinder 4, the middle cylinder 3 is located between the outer cylinder 2 and the inner cylinder 4, thus forming an outer cavity from outside to inside , the middle cavity and the inner cavity, the bottom of the outer cylinder 2 is provided with a first air inlet 1, which communicates with the outer cavity, and the top of the outer cavity is provided with an outer cavity nozzle 5, and the outer cavity nozzle 5 is connected to the second An absorption liquid annular pipeline 6 is connected; the top of the middle cylinder body 3 is provided with a second air inlet 7, the outer cavity communicates with the middle cavity body through the second air inlet 7, and a middle cavity body is arranged on the top of the middle cavity body Nozzle, the middle chamber nozzle is connected to the second absorption liquid annular pipe 12; the botto...

Embodiment 2

[0026] This embodiment focuses on the differences from Embodiment 1, and the similarities will not be repeated. The present invention adds an internal circulation system in this embodiment, and the maximum recovery of sodium sulfite can be realized through this internal circulation system.

[0027] refer to image 3, which includes an internal circulation tank 22, the internal circulation tank 22 is connected to the outlet of the inverted "U"-shaped pipe 20, and the internal circulation tank PH meter 21 and the internal circulation tank liquid level gauge 23 can be arranged in the internal circulation tank 22. The tank 22 is connected to the second absorption liquid annular pipeline 12 through an internal circulation pipe 25 , and the internal circulation pump 24 is connected to the internal circulation pipe 25 .

[0028] After the internal circulation system is added, after the second absorption liquid reacts with the flue gas, it absorbs the sulfur dioxide in the flue gas a...

Embodiment 3

[0030] In this embodiment, the present invention increases the external circulation system, such as Figure 4 As shown, this external circulation system is mainly used to improve the utilization rate of sodium hydroxide solution / sodium carbonate solution, and on the other hand, it is easy to adjust the pH value of the first absorption liquid.

[0031] The external circulation system includes an external circulation tank 27, which is connected to the recovery pipe 15. In the external circulation tank 27, an external circulation tank pH meter 26 and an external circulation tank liquid level gauge 28 can be arranged. The external circulation tank 27 passes through the external circulation pipe. 30 is connected to the first absorption liquid annular pipe 6 , and the external circulation pump 29 is connected to the external circulation pipe 30 .

[0032] In embodiment 1, it is necessary to maintain the first absorption liquid at a relatively low level, and for this reason, it is ne...

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PUM

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Abstract

The flue gas dust removal and desulfurization device comprises an outer cylinder, a middle cylinder and an inner cylinder, the middle cylinder is located between the outer cylinder and the inner cylinder, and therefore an outer cavity, a middle cavity and an inner cavity are sequentially formed from outside to inside; a first air inlet is formed in the bottom of the outer barrel, a second air inlet is formed in the top of the middle barrel, a third air inlet is formed in the bottom of the inner barrel, the middle cavity is communicated with the inner cavity through the third air inlet, and an annular grating is arranged at the third air inlet. According to the invention, one absorption tower is used for solving the task of series absorption towers, so that the investment is reduced, and the desulfurization effect is good.

Description

technical field [0001] The invention relates to chemical equipment, more specifically to a flue gas dust removal and desulfurization device. Background technique [0002] In the production of barium sulfate, barium carbonate, strontium carbonate, etc., the converter kiln is usually used for crude barium production, and the exhaust gas of the converter kiln needs to be dedusted and desulfurized. The dust removal generally adopts bag type dust removal, electric dust removal, etc., and dry desulfurization can be used for desulfurization. Or wet desulfurization, because wet desulfurization has good effect and low cost, it is widely used at present, but wet desulfurization equipment generally adopts multiple absorption towers in series to form a large area and a large investment. [0003] Both CN206262344U and CN201105203Y disclose a flue gas desulfurization device, both of which have a similar structure. Taking CN206262344U as an example, it is provided with an outer cylinder an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/50B01D47/06C01D5/14
CPCB01D53/502B01D47/06C01D5/14B01D2258/0283B01D2251/304B01D2251/604B01D2251/606C01P2006/80
Inventor 赵勇孙跃宗曹立强宋永亮孙跃荣
Owner SHENZHEN JIAXIN CHEM CO LTD