CN206566758U - A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device - Google Patents
A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device Download PDFInfo
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- CN206566758U CN206566758U CN201720215774.5U CN201720215774U CN206566758U CN 206566758 U CN206566758 U CN 206566758U CN 201720215774 U CN201720215774 U CN 201720215774U CN 206566758 U CN206566758 U CN 206566758U
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- desulphurization
- desulfurizing tower
- flue gas
- feed bin
- tower
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Abstract
The utility model discloses a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device, including desulfurizing tower, deduster, Desulphurization feed bin；Wherein, desulfurizing tower is connected to deduster by pipeline；The ash discharge storehouse of desulfurizing tower and deduster bottom is connected to Desulphurization feed bin by pipeline, and the ash silo bottom of the Desulphurization feed bin is connected at the top of desulfurizing tower provided with a conveyance conduit, and conveyance conduit one end, which is provided with to dust, in desulfurizing tower tower uses shower nozzle.The utility model is connected at the top of desulfurizing tower in the ash silo bottom of Desulphurization feed bin provided with a conveyance conduit, the powder of conveying is sprayed by shower nozzle in tower, from top to bottom, with smoke contacts, complete desulfurization, it is fully contacted with flue gas, on the basis of absorption, promote absorption of the Desulphurization neutral and alkali material to sour gas, so as to promote desulfurizing and purifying to act on, both the utilization rate of desulfurizing agent can be improved, desulfurized effect can be improved again, contributes to gas cleaning.
Description
Technical field
The utility model belongs to flue gas desulfurization field, is related to a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergy
System, can be applied to now widely used SDA sulfur removal technologies, and application industry includes Ferrous Metallurgy flue gas desulfurization, coal-burning power plant
The SDA method flue gas desulfurization techniques such as flue gas desulfurization and industrial furnace flue gas desulfurization.
Background technology
Rotary spraying and drying (SDA) Summary of Semi-dry Flue Gas Desulfurization, combines the advantage of wet method and semidry method, is a hair
Transform into ripe flue gas desulfurization technique.The technology employs rotary sprayer, and investment is less than wet processing, in worldwide
To extensive use, utilize more in the country such as Germany, the Italy in West Europe.
Spray dry absorbingatreatingastep technique is that undressed heat smoke is entered after spray dry absorbingatreatingastep tower immediately with being atomized
Alkaline desulfurization slurry contact (Ca (OH)2), the acid ingredient (HCL/HF/SO in flue gas2/SO3) by alkaline droplet absorb it is same
Shi Shuifen is evaporated, and becomes alkali grain, and flying dust and disengaging slag are discharged from tower bottom is absorbed.The flue gas handled continue into
Enter rear deduster, remove remaining suspended particulate.Flue gas after being purified by smoke stack emission.At the same time, absorption tower and dedusting
The drying powder granule of device bottom discharge is sent to feed bin, and referring to Fig. 1, spray dry absorbingatreatingastep (SDA) system is additionally provided with use
Partial desulfurization slag is recycled for improving as charging to be absorbed and drying property.
Ma'anshan Iron and Steel Co., Ltd has number set SDA sulfur removal technologies to be purified applied to sintering flue gas desulfurization at present.
In operation, with the country take numerous producers of SDA sulfur removal technologies as, in operation find there is problems with：
1st, resumed operation initial stage after desulphurization plant maintenance stops production, gas approach end temperature is less than below wet flue gas dew point
When, if now carrying out whitewashing desulfuration operations, dust pelletizing system easily breaks down, and flue gas now is discharge beyond standards, is existed
Time is typically about 1-5 hours；
Although the 2nd, system oneself provided with desulfurization slag as charging be recycled for improve absorb and drying property, process operation
In, from the chemical composition of Desulphurization it is known that calcium hydroxide for flue gas desulfurization, its utilization rate is not high, it is domestic mostly
The sorbent utilization of number producer is generally approximately 30% or so；
3rd, it is excessive to use desulfurization slag to be recycled for improving as charging and absorb and drying property, though to improving desulfurizing agent
Utilization rate it is favourable, but used desulfurization slag is to the catharsis of flue gas, certainly less than the calcium hydroxide slurry newly produced,
And secondary cycle is in use, be usually to be used in mixed way with the calcium hydroxide newly produced, it is substantially reduction of into atomization system
The valid density of the calcium hydroxide of system, for chemically reacting, the not absorption using sulfur dioxide in desulfurizing tower and flue gas
Qualified discharge.
Utility model content
The purpose of this utility model is to provide a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device, this
It is to borrow SDA desulfurizing towers on system parenchyma, enhances absorption process, dexterously combined dry desulfurization with semi-dry desulphurization
Come, spray desulfurization ashes is turned into a kind of assist type desulfurization means, combine with SDA techniques, formed it is a kind of it is brand-new, can improve
The brand-new sulfur removal technology of gas cleaning effect and sorbent utilization.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device, including desulfurizing tower, deduster, desulfurization ash material
Storehouse；Wherein, desulfurizing tower is connected to deduster by pipeline；Desulfurizing tower and the ash discharge storehouse of deduster bottom are connected to by pipeline
Desulphurization feed bin, the ash silo bottom of the Desulphurization feed bin is connected at the top of desulfurizing tower provided with a conveyance conduit, in desulfurizing tower tower
Conveyance conduit one end, which is provided with to dust, uses shower nozzle.
The conveyance conduit is provided with powder delivery system.
The beneficial effects of the utility model：The utility model connects in the ash silo bottom of Desulphurization feed bin provided with a conveyance conduit
It is connected at the top of desulfurizing tower, the powder of conveying is sprayed by shower nozzle in tower, from top to bottom, with smoke contacts, completes desulfurization, make it
Fully contacted with flue gas, on the basis of absorption, promote absorption of the Desulphurization neutral and alkali material to sour gas, so as to promote
Desulfurizing and purifying is acted on, and can both improve the utilization rate of desulfurizing agent, desulfurized effect can be improved again, contributes to gas cleaning.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that being further described below in conjunction with the accompanying drawings to the utility model.
Fig. 1 is SDA desulphurization systems schematic diagram in the prior art；
Fig. 2 is a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device schematic diagram of the utility model.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with embodiment, it is clear that described
Embodiment be only a part of embodiment of the utility model, rather than whole embodiment.Based on the reality in the utility model
Example is applied, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
The scope protected in the utility model.
Routine SDA desulphurization systems in the prior art, as shown in figure 1, including desulfurizing tower 1, deduster 2, Desulphurization feed bin 3,
Quick lime feed bin 4, digester 5；Wherein, desulfurizing tower 1 is connected to deduster 2 by pipeline, the dust flue gas that desulfurizing tower 1 is produced
Discharged after the processing of deduster 2；Desulfurizing tower 1 and the ash discharge storehouse of the bottom of deduster 2 are connected to Desulphurization feed bin by pipeline
3, bottom of towe material is delivered to processing in Desulphurization feed bin 3, produces outside Desulphurization and arranges after the processing of Desulphurization feed bin 3；Quick lime feed bin 4
With outside circulating pulp-making pipeline communication, and digester 5 is connected to, the bottom of digester 5 is connected to de- by digestion pulping pipeline
The top of sulphur tower 1；
The utility model provides a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device, to by Desulphurization
Desulfurizing tower top spray powder is pipelined to, implements assist type dry method powder desulfurization, referring to Fig. 2；
It is connected on the top of desulfurizing tower 1, conveyance conduit 6 and sets provided with a conveyance conduit 6 in the ash silo bottom of Desulphurization feed bin 3
There is powder delivery system (being provided by pipeline compressed air or air compressor machine), by powder delivery system by the desulfurization of certain pressure
To SDA desulfurization tower tops, in the tower of desulfurizing tower 1, conveyance conduit one end is provided with to dust grey gas-phase transport uses shower nozzle, and the powder of conveying leads to
Cross shower nozzle to spray in tower, from top to bottom, with smoke contacts, complete desulfurization.
The Desulphurization powder of penetrating a, part falls into bottom of towe discharge, is partly into the dust pelletizing systems of SDA in itself and collects,
Eventually enter into Desulphurization feed bin；The Desulphurization for the part that SDA techniques are produced is used only in powder injection desulphurization, in whole desulfurizer
Recycle, eventually through discharging desulphurization system outside Desulphurization feed bin.
Implementation result：
By taking horse steel SDA desulfurizers as an example.The grey chemical composition of self-desulphurization used is shown in Table 1.
The chemical composition of the Desulphurization of table 1
When taking the low-temperature flue gas to enter desulfurizing tower, calcium hydroxide slurry is not sprayed, it is directly (non-using progress front end desulfurization of dusting
Nominal situation, now flue gas flow is low, and temperature is low, it is impossible to desulfurization of whitewashing) actual operation data is shown in Table 2.
The single use SDA desulfurizing byproducts of table 2 circulate operation data in SDA processes itself
Data analysis shows, under conditions of not whitewashing, only powder injection desulphurization, in low-temperature flue gas and low-concentration sulfur dioxide
Under, desulfuration efficiency is more than 70%！Counter in theory to push away, entrance point sulfur dioxide concentration is higher, constant flue-gas temperature, flow,
Under the conditions of the amount of dusting, SDA itself accessory substances carry out front end recycling, it is possible to implement front end desulfurization.
During normal desulfurization production, whitewash and carried out with dusting with reference to synchronous.When shaft furnace opens stove, do not open bypass, desulphurization system with
Shaft furnace 100% is run simultaneously.Progress desulfurization data are combined with SDA master operations and are shown in Table 3.
Service data when table 3 mixes desulfurization
Data analysis shows：
(1) in the case where atomizer whitewashing amount is constant, spray into accessory substance after 2-3 minute, arrange mouth sulfur dioxide concentration from
140mg/Nm3Drop to 50mg/Nm3Below；
(2) in the case where control row's mouth sulfur dioxide concentration is basicly stable, atomizer whitewashing amount drops to from 9.4t/h
7.7t/h。
The Desulphurization that SDA techniques are produced in itself, there is following characteristic：Superfine light alkaline particle powder, specific surface area pole
Greatly, there is good physisorption to sour gas, solid state powder good fluidity is easily conveyed in the duct.
The Desulphurization directly produced in itself using SDA techniques is dusted in SDA itself desulfurizing tower, makes it abundant with flue gas
Contact, on the basis of absorption, promotes absorption of the Desulphurization neutral and alkali material to sour gas, so as to promote desulfurizing and purifying to make
With can both improve the utilization rate of desulfurizing agent, desulfurized effect can be improved again, contributes to gas cleaning.
The utility model preferred embodiment disclosed above is only intended to help and illustrates the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, it is only described embodiment that the utility model is not limited yet.Obviously, according to this theory
The content of bright book, can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably
Principle of the present utility model and practical application are explained, so that skilled artisan can be best understood by and utilize this
Utility model.The utility model is only limited by claims and its four corner and equivalent.
Claims (2)
1. a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device, including desulfurizing tower (1), deduster (2), desulfurization
Grey feed bin (3)；Wherein, desulfurizing tower (1) is connected to deduster (2) by pipeline；Desulfurizing tower (1) and the row of deduster (2) bottom
Ash silo is connected to Desulphurization feed bin (3) by pipeline, it is characterised in that the ash silo bottom of the Desulphurization feed bin (3) is provided with
One conveyance conduit (6) is connected at the top of desulfurizing tower (1), and conveyance conduit one end, which is provided with to dust, in desulfurizing tower (1) tower uses shower nozzle.
2. a kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device according to claim 1, its feature exists
In the conveyance conduit (6) is provided with powder delivery system.
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| CN201720215774.5U CN206566758U (en) | 2017-03-07 | 2017-03-07 | A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device |
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| CN201720215774.5U CN206566758U (en) | 2017-03-07 | 2017-03-07 | A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316934A (en) * | 2018-10-29 | 2019-02-12 | 安徽欣创节能环保科技股份有限公司 | A kind of flue gas desulphurization system for cancelling bypass |
| CN110075686A (en) * | 2019-05-14 | 2019-08-02 | 河北华强科技开发有限公司 | A kind of semi-dry method flue gas desulfurization technique system |
| CN112594728A (en) * | 2020-12-07 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Domestic waste incineration fly ash classification treatment system |
-
2017
- 2017-03-07 CN CN201720215774.5U patent/CN206566758U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316934A (en) * | 2018-10-29 | 2019-02-12 | 安徽欣创节能环保科技股份有限公司 | A kind of flue gas desulphurization system for cancelling bypass |
| CN110075686A (en) * | 2019-05-14 | 2019-08-02 | 河北华强科技开发有限公司 | A kind of semi-dry method flue gas desulfurization technique system |
| CN112594728A (en) * | 2020-12-07 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Domestic waste incineration fly ash classification treatment system |
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