CN202078851U - Conveyer device for oxidized air and dry desulfurizing agent - Google Patents
Conveyer device for oxidized air and dry desulfurizing agent Download PDFInfo
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- CN202078851U CN202078851U CN2011201524985U CN201120152498U CN202078851U CN 202078851 U CN202078851 U CN 202078851U CN 2011201524985 U CN2011201524985 U CN 2011201524985U CN 201120152498 U CN201120152498 U CN 201120152498U CN 202078851 U CN202078851 U CN 202078851U
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- oxidation
- oxidation air
- desulfurizing agent
- conveyer
- absorption tower
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Abstract
The utility model discloses a conveyer device for oxidized air and a dry desulfurizing agent, which is applied to a wet flue gas desulfurization system. The conveyer device comprises a dry desulfurizing agent bin, an oxidized fan, a desulfurizing agent conveyer, an oxidized air cooler, and an oxidized air pipe, wherein an outlet of the dry desulfurizing agent bin is connected with the desulfurizing agent conveyer, the oxidized fan is connected with the oxidized air cooler, and the desulfurizing agent conveyer and the oxidized air cooler are respectively connected to an absorption tower inlet by the oxidized air pipe. The conveyer device has the advantages of being simple in structure, low in running energy consumption, convenient for running and reducing the unbalanced water pressure of the desulfurization system, also has great economical benefits and application prospect, and meets the requirement on energy saving, emission reduction and social sustainable development.
Description
Technical field
The utility model belongs to the wet process of FGD technology, is specifically related to a kind of oxidation air in the wet method fume desulfurizing system and conveying device of dry desulfurizer of being applied in.
Background technology
In wet process of FGD, need in the stock tank of absorption tower, spray into oxidation air, oxidation air becomes calcium sulfate with the calcium sulfite oxidation in the stock tank of absorption tower, crystallizes into gypsum then; Simultaneously, in and the absorption tower spraying layer wash the SO that gets off
2, acidic materials such as HCl, HF and guarantee that PH in the absorption tower a stationary value, need cover CaCO
3Or desulfurizing agents such as CaO or NaOH or MgO.
At present, be to adopt oxidation air system and the separate system of desulfurizing agent feeding system two covers that oxidation air and dry desulfurizer are imported respectively in the stock tank of absorption tower in the wet method fume desulfurizing system.
The oxidation air system sends oxidation air into the absorption tower stock tank by oxidation fan.Oxidation air was added into fresh water (FW) in pipeline before entering the absorption tower stock tank, purpose is in order to cool off and to make the oxidation air state that reaches capacity.In this way, the oxidation air that can prevent heat makes the water evaporates in the slurries and causes the phenomenon of outlet slurries bonding, fouling to take place in the outlet of oxidation air pipe when entering the absorption tower.
Dry desulfurizer feeding system (as agstone, 250 orders, 90% sieving rate) is transported to plant area by the self-tipping type closed tank truck, is transported to limestone powder bin.Be stored in the limestone powder bin agstone the gasification blower fan fluidisation under, enter the lime stone slurry case by rotatory feeder valve, by mixer powder is fully mixed with the fresh water (FW) stirring, make the lime stone slurry of concentration about 15%～30%, lime stone slurry is delivered to the absorption tower with slush pump and is carried out desulphurization reaction.Every absorption tower is furnished with a lime stone alkali lye and carries endless tube, and lime crystal soda slurries case is got back in recirculation, and lime stone slurry is transported to the absorption tower by the lateral on the endless tube, precipitates obstruction to prevent slurries in conveyance conduit.
Can find by above-mentioned introduction, in existing wet method fume desulfurizing system, oxidation air needs to add fresh water (FW) earlier and to become saturated air, dry desulfurizer needs to carry out hybrid process with fresh water (FW) earlier and becomes slurries, and needs special conveying device that slurries are delivered into the absorption tower.Like this, whole system need dispose desulfurizer slurry case, agitator, delivery pump, join equipment such as pulp-water system, slurries pipeline system and instrument.Therefore, existing wet method fume desulfurizing system complex structure, cost are higher.Because the systematic comparison complexity, therefore, the operation energy consumption of whole system is also very high.In addition, also need to spray into the pulp-water of joining that oxidation air cooling water and needs injection desulfurizing agent use in the absorption tower, this can increase the unbalanced pressure of desulphurization system water again, has reduced the washing water quantity of demister.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, operation energy consumption is low, operation is convenient, that can reduce desulphurization system water unbalanced pressure is applied to the oxidation air in the wet method fume desulfurizing system and the conveying device of dry desulfurizer, to overcome the deficiency that prior art exists.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
The conveying device of a kind of oxidation air and dry desulfurizer, comprise dry desulfurizer storehouse, oxidation fan, it is characterized in that: also include desulfurizing agent conveyer, oxidation air cooler, oxidation airduct, the outlet in described dry desulfurizer storehouse connects the desulfurizing agent conveyer, oxidation fan connects the oxidation air cooler, and described desulfurizing agent conveyer and oxidation air cooler all are connected to the absorption tower inlet by the oxidation airduct.
In the utility model, desulfurizing agent conveyer and oxidation air cooler are connected on the oxidation airduct by the dilute phase conveyer.Between described dilute phase conveyer and desulfurizing agent conveyer, also be connected with electronic flapper.
In preferred implementation of the present utility model, described desulfurizing agent conveyer is the frequency conversion conveying worm, and described absorption tower inlet is provided with SO
2Be provided with the PH sensor in sensor and flue gas flow meter, the absorption tower, described SO
2Sensor and PH sensor all are electrically connected the frequency conversion conveyer.
In addition, also be provided with Pressure gauge and thermometer between described oxidation air cooler and the dilute phase conveyer.
Described oxidation air cooler is a heat exchanger.Mode by heat exchange is cooled off oxidation air, thereby guarantees that dry desulfurizer touches moisture content as far as possible less before the input absorption tower.
In addition, can not enter the pipeline of conveying in order to guarantee the slurries in the absorption tower, described oxidation airduct is positioned on the forward direction of entry position, absorption tower and bends, and kink height is not less than the slurries face in the absorption tower.
Adopt technique scheme, the utility model utilizes oxidation air directly dry desulfurizer to be sent in the stock tank of absorption tower, can make system simple like this, desulfurizing agent stock mixing system and desulfurizer slurry induction system (specifically can reduce desulfurizer slurry case, agitator, delivery pump, join equipment such as pulp-water system, slurries pipeline system and instrument) have been cancelled, cost is saved, cut down the consumption of energy convenient operation; In this process, do not need in absorption tower system, to spray into oxidation air cooling water, do not need the pulp-water of joining of desulfurizer slurry, can reduce the unbalanced pressure of desulphurization system water, increase the washing water quantity of demister.This technical scheme operation is convenient, energy-conservation, can produce enormous benefits to enterprise, meets the requirement of social sustainable development.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, oxidation air in the wet method fume desulfurizing system of the present utility model and dry desulfurizer conveying device comprise described dry desulfurizer storehouse 1, frequency conversion conveying worm 2, electronic flapper 3, dilute phase conveyer 4, oxidation fan 5, oxidation air cooler 6; This frequency conversion conveying worm 2 is connected with the outlet in dry desulfurizer storehouse 1; Electronic flapper 3 one ends connect frequency conversion conveying worm 2, the other end connects the charging aperture of dilute phase conveyer 4, the outlet of dilute phase conveyer 4 links to each other by the inlet of oxidation airduct with absorption tower 7, oxidation fan 5 is connected with oxidation air cooler 6, and oxidation air cooler 6 also connects the air inlet of dilute phase conveyer 6 then.
Store dry desulfurizer in the dry desulfurizer storehouse 1.
Frequency conversion conveying worm 2 adopts VFC, and its conveying capacity to desulfurizing agent is subjected to the control of two factors:
A, positive feedback control: 7 inlet is provided with SO on the absorption tower
2Sensor and flue gas flow meter just can calculate the amount of the required alkali of system by these two parameters and predetermined alkali/S mol ratio, and with this signal the rotating speed of frequency conversion conveying worm are carried out coarse adjustment;
B, negative-feedback control: according to the pH value in the absorption tower rotating speed of frequency conversion conveying worm is accurately regulated, reached the environment protection emission requirement with the content that guarantees pollutant in the flue gas.
It is in order to guarantee that dilute phase conveyer 4 can work normally that electronic flapper 3 is arranged between frequency conversion conveying worm 2 and the dilute phase conveyer 4, and oxidation air is not scurried to dry desulfurizer storehouse 1 on not understanding in guaranteeing to carry.
Oxidation fan 5 is for to spray into oxidation air in the stock tank of absorption tower, oxidation air becomes calcium sulfate with the calcium sulfite oxidation in the stock tank of absorption tower, crystallizes into gypsum then; Simultaneously, oxidation air is also as the conveying air of dry desulfurizer.
For the pressure and temperature to oxidation air is monitored, between oxidation air cooler 6 and dilute phase conveyer 4, also be provided with Pressure gauge and thermometer.
More than be exactly oxidation air and the dry desulfurizer conveying device in the wet method fume desulfurizing system of the present utility model, its working method is as follows:
A. start the i.e. logical cooling medium that circulates in cooler of oxidation air cooler 6(), prepare the 5 outlet oxidation air coolings of oxygen supply wind transmission machine;
B. start oxidation fan 5, oxidation air is through oxidation air cooler 6 cooling, enters absorption tower 7 stock tanks again after making oxidation air reach the temperature of outlet non-scaling that the oxidation airduct enters the absorption tower stock tank.
C. after oxidation air operation regular hour (general 3 minutes) is also stable (temperature, pressure is normal), and after the flue gas system operation of wet desulfurization system, startup frequency conversion conveying worm 2, electronic flapper 3.At this moment, frequency conversion conveying worm 2 is a VFC, and its conveying capacity is subjected to the control of two factors:
(a) positive feedback control: 7 inlet is provided with the SO2 sensor on the absorption tower, and flue gas flow meter, just can calculate the amount of the required alkali of system by these two parameters and predetermined alkali/S mol ratio, and the rotating speed of frequency conversion conveying worm 2 be carried out coarse adjustment with this signal;
(b) negative-feedback control: according to the pH value in the absorption tower rotating speed of frequency conversion conveying worm 2 is accurately regulated, reached the environment protection emission requirement with the content that guarantees pollutant in the flue gas.
D. when this system is out of service, stop frequency conversion conveying worm 2 earlier, stop electronic flapper 3 again, wait for that 5min stops oxidation fan more successively, stops oxidation air cooler 6.
By above-mentioned detailed introduction, the utility model is to adopt oxidation air directly to carry dry desulfurizer to enter the stock tank on absorption tower as can be seen.Compare with existing conveying device, structure is simpler, cancel desulfurizing agent and joined slurry alkali system and desulfurizing agent slurry alkali lye induction system (specifically reduced desulfurizer slurry liquid case, agitator, delivery pump, joined pulp-water system, slurries pipeline system and instrument etc.), saved province's cost.And because simple in structure, not only operation is convenient, and operation energy consumption also reduces greatly.In whole transportation process, do not need in the absorption tower, to spray into oxidation air cooling water, and do not need the pulp-water of joining of desulfurizer slurry yet, so also can reduce the unbalanced pressure of desulphurization system water, increase the washing water quantity of demister.Therefore, the technical solution of the utility model has moves convenient, energy-saving advantages, can produce enormous benefits to enterprise, meets the requirement of energy-saving and emission-reduction and social sustainable development.
But; those skilled in the art will recognize that; the above-mentioned specific embodiment is exemplary; be in order better to make those skilled in the art can understand this patent; can not be interpreted as it is restriction to this patent protection domain; so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope of this patent protection.
Claims (7)
1. the conveying device of oxidation air and dry desulfurizer, comprise dry desulfurizer storehouse, oxidation fan, it is characterized in that: also include desulfurizing agent conveyer, oxidation air cooler, oxidation airduct, the outlet in described dry desulfurizer storehouse connects the desulfurizing agent conveyer, oxidation fan connects the oxidation air cooler, and described desulfurizing agent conveyer and oxidation air cooler all are connected to the absorption tower inlet by the oxidation airduct.
2. the conveying device of oxidation air according to claim 1 and dry desulfurizer is characterized in that: described desulfurizing agent conveyer and oxidation air cooler are connected on the oxidation airduct by the dilute phase conveyer.
3. the conveying device of oxidation air according to claim 2 and dry desulfurizer is characterized in that: also be connected with electronic flapper between described dilute phase conveyer and the desulfurizing agent conveyer.
4. according to the conveying device of described oxidation air of the arbitrary claim of claim 1 to 3 and dry desulfurizer, it is characterized in that: described desulfurizing agent conveyer is the frequency conversion conveying worm, and described absorption tower inlet is provided with SO
2Be provided with the PH sensor in sensor and flue gas flow meter, the absorption tower, described SO
2Sensor and PH sensor all are electrically connected the frequency conversion conveyer.
5. the conveying device of oxidation air according to claim 4 and dry desulfurizer is characterized in that: also be provided with Pressure gauge and thermometer between described oxidation air cooler and the dilute phase conveyer.
6. the conveying device of oxidation air according to claim 2 and dry desulfurizer is characterized in that: described oxidation air cooler is a heat exchanger.
7. the conveying device of oxidation air according to claim 2 and dry desulfurizer is characterized in that: described oxidation airduct is positioned on the forward direction of entry position, absorption tower and bends, and kink height is not less than the slurries face in the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201524985U CN202078851U (en) | 2011-05-13 | 2011-05-13 | Conveyer device for oxidized air and dry desulfurizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201524985U CN202078851U (en) | 2011-05-13 | 2011-05-13 | Conveyer device for oxidized air and dry desulfurizing agent |
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| Publication Number | Publication Date |
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| CN202078851U true CN202078851U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201524985U Expired - Fee Related CN202078851U (en) | 2011-05-13 | 2011-05-13 | Conveyer device for oxidized air and dry desulfurizing agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179162A (en) * | 2011-05-13 | 2011-09-14 | 上海汉卓能源科技有限公司 | Device and method for conveying oxidation air and dry desulfurizing agent |
| CN103341316A (en) * | 2013-07-22 | 2013-10-09 | 上海汉卓能源科技有限公司 | Conveying device of dry type desulfurizing agent |
| CN106512703A (en) * | 2016-10-31 | 2017-03-22 | 铜陵市菲力克测控技术有限公司 | Green energy-saving desulphurization device for flue gas purification system and technology of device |
-
2011
- 2011-05-13 CN CN2011201524985U patent/CN202078851U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179162A (en) * | 2011-05-13 | 2011-09-14 | 上海汉卓能源科技有限公司 | Device and method for conveying oxidation air and dry desulfurizing agent |
| CN103341316A (en) * | 2013-07-22 | 2013-10-09 | 上海汉卓能源科技有限公司 | Conveying device of dry type desulfurizing agent |
| CN103341316B (en) * | 2013-07-22 | 2015-02-04 | 上海汉卓能源科技有限公司 | Conveying device of dry type desulfurizing agent |
| CN106512703A (en) * | 2016-10-31 | 2017-03-22 | 铜陵市菲力克测控技术有限公司 | Green energy-saving desulphurization device for flue gas purification system and technology of device |
| CN106512703B (en) * | 2016-10-31 | 2018-11-23 | 铜陵市菲力克测控技术有限公司 | Green energy conservation formula desulfurizer and its technique for flue gas purification system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20170513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |