CN201271566Y - Magnesia wet flue gas desulfurization device - Google Patents
Magnesia wet flue gas desulfurization device Download PDFInfo
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- CN201271566Y CN201271566Y CNU2008200368704U CN200820036870U CN201271566Y CN 201271566 Y CN201271566 Y CN 201271566Y CN U2008200368704 U CNU2008200368704 U CN U2008200368704U CN 200820036870 U CN200820036870 U CN 200820036870U CN 201271566 Y CN201271566 Y CN 201271566Y
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- desulfuration
- flue gas
- magnesia
- gas desulfurization
- desulfurization
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Abstract
The utility model discloses a magnesia wet flue gas desulfurization device, comprising a flue; a desulfurization absorption tower is arranged behind the flue; wherein, the upper part, the middle part and the bottom of the desulfurization absorption tower are provided with a defogger, a desulfurization reactor and a water collecting tank respectively, a chimney is arranged above the defogger, a recycle pump is arranged between the desulfurization reactor arranged at the middle part of the desulfurization absorption tower and the water collecting tank arranged at the bottom of the desulfurization absorption tower, the desulfurization absorption tower is communicated with a desulfurizer conveying pipe of a desulfurizer preparing device, the desulfurizer preparing device comprises a magnesia reaction pot and a magnesium storage pot, a delivery pump is connected between the magnesia reaction pot and the magnesium storage pot, the bottom of the magnesium storage pot is externally connected with a desulfurizer conveying pipe of a governor pump, and the outlet of the desulfurizer conveying pipe is communicated with the water collecting tank arranged at the bottom of the absorption tower. The device has the advantages that the structure is reasonable, the working effect is good, the magnesia wet flue gas desulfurization device can be applied to the flue gas desulfurization of the vertical type or rotary type burner used for burning the waste, the sinter machine head and the boiler; in addition, the equipment is simple, the allocation is flexible, the cost is low, therefore, the magnesia wet flue gas desulfurization device has industrially utilization value.
Description
Technical field
The utility model relates to the wet flue gas desulfurizer of a kind of environmental protection field magnesium base desulfur technology, particularly relates to the general flue gas desulfurization by magnesia wet method device that a kind of oxysulfide that is primarily aimed in the smoke evacuations such as the vertical or swinging burner of waste incineration, sintering device handpiece, boiler is administered.
Background technology
The pollution of sulfur dioxide is the focus of world many countries environmental protection always, and desulfur technology is divided into wet method, dry method and semidry method at present.The wet desulphurization technical matters is simple, and the most ripe relatively, desulfuration efficiency is greater than 90%, and usage quantity is maximum; The desulfurization by dry method relative complex, desulfuration efficiency is less than 90%; The advantage of semi-dry desulphurization technological synthesis wet method, desulfurization by dry method, desulfurization degree are greater than 90%, but technology is more complicated, and reliability remains further to be investigated.
Dropping into maximum coal-fired boiler in power plant relatively at present and waste incineration is vertical or the exhaust gas desulfurization technology of swinging burner mainly is based on lime---gypsum wet desulfur technology, other dry techniques are auxilliary.
Metallurgy sintered head flue gas of China and fire coal boiler fume parameter difference are bigger, and the conventional boiler sulfur removal technology can not be fit to sintering machine head end, so the never suitable treatment process of the sintering machine head end SO 2 from fume of China's iron and steel metallurgical industry discharging;
In order to overcome the defective that traditional flue gas desulfur device exists, utility model patent ZL200520132306.5 discloses " Sinter Airprocess Nose Flue Gas Desulfurizer ", it is a kind of dry desulfurization device that is used for the calcium base of sintering machine head end flue gas, be characterized in adopting sintering process raw material soft burnt lime commonly used and light dolomite to make the desulfurizing agent raw material, through returning desulfurization reactor, the rear portion cooperates efficient mechanical type separator and sack cleaner to finish purification to the sintering machine head end flue gas jointly.But because its system complex, number of devices is many, need add large-scale sack cleaner in addition, and once investment is high, and desulfuration efficiency is less than 90%, so do not see so far in sintering machine head end enforcement popularization.
Summary of the invention
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, the flue gas desulfurization by magnesia wet method device of good working effect.
The utility model is to adopt following technical solution to realize above-mentioned purpose:
A kind of flue gas desulfurization by magnesia wet method device, it is characterized in that: comprise flue, desulfuration absorbing tower is set behind the flue, desulfuration absorbing tower top, middle part, bottom are provided with demister, desulfuration reaction device, water leg respectively, the top of demister is provided with chimney, is connected with circulating pump between middle part desulfuration reaction device and the bottom water leg; Desulfuration absorbing tower communicates with the desulfurizing agent conveyance conduit of apparatus for preparing desulphurizing agent; Described apparatus for preparing desulphurizing agent comprises magnesia retort and magnesium hydroxide storage tank, be connected with delivery pump between the two, the external desulfurizing agent conveyance conduit of adjusting pump that is equipped with in the bottom of magnesium hydroxide storage tank, this pipe outlet is connected with bottom, absorption tower water leg.
Be provided with booster fan between flue and the desulfuration absorbing tower, booster fan is connected with cooler.
Water leg sidepiece at desulfuration absorbing tower is provided with mixer.
The desulfuration reaction device that install at described desulfuration absorbing tower middle part is made up of the additional porous supporting plate of desulfuration solution nozzle and desulfuration solution nozzle below, and the desulfuration solution nozzle is one deck, and porous supporting plate quantity is one to five layer.
The desulfuration reaction device that install at described desulfuration absorbing tower middle part only is made up of the desulfuration solution nozzle, and the desulfuration solution nozzle is one to five layer.
Be equipped with on the sidepiece of the bottom water leg of described desulfuration absorbing tower and close 1～4 mixer, the demister on desulfuration absorbing tower top is one-level or secondary configuration.
The magnesia retort top of described apparatus for preparing desulphurizing agent is equipped with feeding device, and this feeding device is an opening funnel, and the deduster petticoat pipe is equipped with on its top, in jar vertical mixer and heating control apparatus is installed; Vertical mixer also is installed in the magnesium hydroxide holding vessel.
The retort of the water leg at the bottom of the described desulfuration absorbing tower, magnesium hydroxide apparatus for preparing desulphurizing agent and holding vessel all are equipped with the pressure transmitter liquid level detection device, its tank body outside portion is equipped with the liquid level display unit in addition, display unit is transparent cylindrical shell, and its upper opening place is equipped with cleans shower nozzle and water valve.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach:
1, adopt magnesia wet desulphurization technology, technology maturation, desulfuration efficiency is greater than 95%, and processing line is short out, resistance is little, and the operation power consumption is low.
2, the magnesium hydroxide desulfurizing agent preparation made from magnesia is easy, and the concentration height is difficult for blocking pipe, and desulfurizer can move reliably and with long-term.
3, the desulfuration reaction device of desulfuration absorbing tower middle part installation has two kinds of versions, and flexible configuration can require according to user's difference to be configured.
4, desulfurizer equipment is simple, and quantity is few, and floor space is little.
In addition, the utility model not only can be applicable to and carry out flue gas desulfurizations such as the vertical or swinging burner of waste incineration, sintering device handpiece, boiler, and equipment is simple, flexible configuration, and cost is low, has the value of utilizing on the industry.
Description of drawings
Fig. 1 is the formation schematic diagram of flue gas desulfurization by magnesia wet method device of the present utility model;
Fig. 2 is middle part, absorption tower desulfuration reaction device version one schematic diagram of flue gas desulfurization by magnesia wet method device of the present utility model;
Fig. 3 is middle part, absorption tower desulfuration reaction device version two schematic diagrames of flue gas desulfurization by magnesia wet method device of the present utility model;
Fig. 4 is a flue gas desulfurization by magnesia wet method device desulfuration solution nozzle schematic diagram of the present utility model;
Fig. 5 is a flue gas desulfurization by magnesia wet method device porous supporting plate schematic diagram of the present utility model;
Fig. 6 is a flue gas desulfurization by magnesia wet method device outer liquid level display apparatus schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model flue gas desulfurization by magnesia wet method device, its concrete structure comprises:
Flue A is desulfurized flue gas from the burner introducing.The end of flue A is provided with control valve 1, the cooler 3 of booster fan 2 and back; Control valve 1 is used to regulate the flow and the pressure of desulfurization flue gas, and booster fan 2 is used to overcome the resistance of desulfurizer system; The cooler 3 of back injects doctor solution by coolant pump 4, is used for the adiabatic cooling and the preliminary desulphurization reaction of desulfurization flue gas;
Absorption tower B, it is connected with cooler 3, comprises bottom water leg 5 and one or four sidepiece mixers 6, is used to store circulation desulfurization liquid and mixing; Middle part desulfuration reaction device 7 (two kinds of version), the doctor solution that is used for desulfurization flue gas and circulating pump 10 injections carries out neutralization reaction; Moisture in the demister 8 Ex-all flue gases on top enters atmosphere by chimney 9.
Wherein, the middle part desulfuration reaction device 7 of desulfuration absorbing tower B has two kinds of versions;
First kind of version consults 2, is made up of desulfuration solution nozzle 7-1 and additional porous supporting plate 7-2; Consult Fig. 4, desulfuration solution nozzle 7-1 is one deck, big small nozzle reasonable disposition; Consult Fig. 5, porous supporting plate 7-2 quantity is one to five layer, and percent opening is constant substantially, and aperture and quantity are adjusted accordingly with exhaust gas volumn, and the number of plies of porous supporting plate 7-2 is many more, and desulfuration efficiency is high more.
Second kind of version is consulted Fig. 3, only is made up of desulfuration solution nozzle 7-1; Consult Fig. 4, desulfuration solution nozzle 7-1 is one to five layer, and big small nozzle rationally is provided with, and the number of plies of desulfuration solution nozzle 7-1 is many more, and desulfuration efficiency is high more.
Apparatus for preparing desulphurizing agent C comprises magnesia retort 11 and magnesium hydroxide storage tank 12; Retort 11 tops one side is equipped with loading hopper 13, and deduster 16 petticoat pipes are equipped with on its top, is used for the reinforced of magnesia powder; Magnesia retort 11 crown centers have been installed vertical mixer 14, are used for stirring of magnesia powder and water reaction; Magnesia retort 11 lower side are equipped with heating control apparatus 15, are used for the reaction of accelerating oxidation magnesium powder and water, and it is stand-by to inject storage tank 12 by delivery pump 18 after the magnesium hydroxide desulfurizing agent preparation in the magnesia retort 11 is finished.Magnesium hydroxide storage tank 12 crown centers have also been installed vertical mixer 17, be used for the stirring of magnesium hydroxide desulfurizing agent in the magnesium hydroxide storage tank 12, prevent its precipitation, adjusting pump 19 is used for the magnesium hydroxide desulfurizing agent of storage tank 12 is injected absorption tower B, the pH value that guarantees the desulfuration solution in the water leg 6 of bottom, absorption tower within the scope of setting, the desulfuration efficiency of stably desulphurizing device.
Consult Fig. 6, bottom water leg 6, the magnesia retort 11 and the magnesium hydroxide holding vessel 12 of apparatus for preparing desulphurizing agent all are equipped with pressure transmitter liquid level detection device 20, its tank body outside portion is equipped with outer liquid level display apparatus 21 in addition, this device directly links to each other with tank body by pipeline for transparent cylindrical shell, and washer jet 22 and water valve 23 have been installed by its upper opening place; Pressure transmitter liquid level detection device 20 is delivered to computer demonstration and control to liquid level signal; Outer liquid level display apparatus 21 directly shows a jar interior liquid level, is convenient to the correction of device 20; Nozzle 22 and water valve 23 are used for outer liquid level display apparatus 21 and show that water cleans when smudgy.
The utility model is realized by following technology circuit: the desulfurization flue gas of drawing from burner passes through the booster fan supercharging, overcome the resistance on cooler, absorption tower, after adiabatic saturated cooling of subcooler and preliminary desulfurization, enter the absorption tower, in middle part desulfuration reaction device (two kinds of versions are optional), carry out neutralization reaction with desulfuration solution, slough the sulfide more than 95%, behind the moisture in the top demister removal flue gas, enter atmosphere from chimney; The magnesium sulfite that generates, magnesium sulfate and add into the magnesium hydroxide desulfurizing agent carry out neutralization reaction by the absorption tower desulfuration reaction device again through circulating pump together; The magnesium hydroxide desulfurizing agent that apparatus for preparing desulphurizing agent is made constantly adds in the absorption tower according to the pH value size of solution in the water leg of absorption tower, and is stable to keep its desulfuration efficiency; Apparatus for preparing desulphurizing agent can guarantee the concentration that the magnesium hydroxide desulfurizing agent is stable and the requirement of consumption.Because humidity in the flue gases such as waste incineration vertical combustor or swinging burner, sintering device handpiece, boiler, temperature is different with sulfur content, and operating condition is changeable, and this device has adapted to this characteristics well on mechanism; If operating condition changes, amount of sulfur contenting in smoke changes, and the cigarette temperature changes, and only needs the control parameters such as supply of control desulfurizing agent can keep the operation of system stability ground.
The utility model has proposed a whole set of at flue gases such as the vertical swinging burner of waste incineration, sintering device handpiece, boilers can carry out the device of high-efficiency desulfurization, can be very rationally and solve the problem of sintering machine head end sulfur oxides emissions economically.
Claims (8)
1, a kind of flue gas desulfurization by magnesia wet method device, it is characterized in that: comprise flue, desulfuration absorbing tower is set behind the flue, desulfuration absorbing tower top, middle part, bottom are provided with demister, desulfuration reaction device, water leg respectively, the top of demister is provided with chimney, is connected with circulating pump between middle part desulfuration reaction device and the bottom water leg; Desulfuration absorbing tower communicates with the desulfurizing agent conveyance conduit of apparatus for preparing desulphurizing agent; Described apparatus for preparing desulphurizing agent comprises magnesia retort and magnesium hydroxide storage tank, be connected with delivery pump between the two, the external desulfurizing agent conveyance conduit of adjusting pump that is equipped with in the bottom of magnesium hydroxide storage tank, this pipe outlet is connected with bottom, absorption tower water leg.
2, flue gas desulfurization by magnesia wet method device according to claim 1 is characterized in that: be provided with booster fan between flue and the desulfuration absorbing tower, booster fan is connected with cooler.
3, flue gas desulfurization by magnesia wet method device according to claim 1 and 2 is characterized in that: the water leg sidepiece at desulfuration absorbing tower is provided with mixer.
4, flue gas desulfurization by magnesia wet method device according to claim 1 and 2, it is characterized in that: the desulfuration reaction device that install at described desulfuration absorbing tower middle part is made up of the additional porous supporting plate of desulfuration solution nozzle and desulfuration solution nozzle below, the desulfuration solution nozzle is one deck, and porous supporting plate quantity is one to five layer.
5, flue gas desulfurization by magnesia wet method device according to claim 1 and 2 is characterized in that: the desulfuration reaction device that install at described desulfuration absorbing tower middle part only is made up of the desulfuration solution nozzle, and the desulfuration solution nozzle is one to five layer.
6, flue gas desulfurization by magnesia wet method device according to claim 3 is characterized in that: be equipped with on the sidepiece of the bottom water leg of described desulfuration absorbing tower and close 1～4 mixer, the demister on desulfuration absorbing tower top is one-level or secondary configuration.
7, flue gas desulfurization by magnesia wet method device according to claim 1 and 2, it is characterized in that: the magnesia retort top of described apparatus for preparing desulphurizing agent is equipped with feeding device, this feeding device is an opening funnel, the deduster petticoat pipe is equipped with on its top, in jar vertical mixer and heating control apparatus is installed; Vertical mixer also is installed in the magnesium hydroxide holding vessel.
8, flue gas desulfurization by magnesia wet method device according to claim 1 and 2, it is characterized in that: the retort and the holding vessel of the water leg at the bottom of the described desulfuration absorbing tower, magnesium hydroxide apparatus for preparing desulphurizing agent all are equipped with the pressure transmitter liquid level detection device, its tank body outside portion is equipped with the liquid level display unit in addition, display unit is transparent cylindrical shell, and its upper opening place is equipped with cleans shower nozzle and water valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200368704U CN201271566Y (en) | 2008-05-26 | 2008-05-26 | Magnesia wet flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200368704U CN201271566Y (en) | 2008-05-26 | 2008-05-26 | Magnesia wet flue gas desulfurization device |
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| CN201271566Y true CN201271566Y (en) | 2009-07-15 |
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| CNU2008200368704U Expired - Lifetime CN201271566Y (en) | 2008-05-26 | 2008-05-26 | Magnesia wet flue gas desulfurization device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120126A (en) * | 2011-02-17 | 2011-07-13 | 大连海事大学 | Preparation method of Mg(OH)2 slurry in marine desulfurization system by virtue of magnesium base-seawater method |
| CN107185385A (en) * | 2017-07-07 | 2017-09-22 | 金川集团股份有限公司 | A kind of spuious flue gas during smelting wet dedusting of atm number, sulfur method |
| CN108854499A (en) * | 2018-08-09 | 2018-11-23 | 河南禾力能源股份有限公司 | A kind of furfural dregs boiler smoke magnesia FGD purification device |
-
2008
- 2008-05-26 CN CNU2008200368704U patent/CN201271566Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120126A (en) * | 2011-02-17 | 2011-07-13 | 大连海事大学 | Preparation method of Mg(OH)2 slurry in marine desulfurization system by virtue of magnesium base-seawater method |
| CN107185385A (en) * | 2017-07-07 | 2017-09-22 | 金川集团股份有限公司 | A kind of spuious flue gas during smelting wet dedusting of atm number, sulfur method |
| CN108854499A (en) * | 2018-08-09 | 2018-11-23 | 河南禾力能源股份有限公司 | A kind of furfural dregs boiler smoke magnesia FGD purification device |
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Granted publication date: 20090715 |
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