CN203750397U - Automatic alkali adding device of circulating alkali pool in double-alkali desulfurization process - Google Patents

Automatic alkali adding device of circulating alkali pool in double-alkali desulfurization process Download PDF

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Publication number
CN203750397U
CN203750397U CN201420034881.4U CN201420034881U CN203750397U CN 203750397 U CN203750397 U CN 203750397U CN 201420034881 U CN201420034881 U CN 201420034881U CN 203750397 U CN203750397 U CN 203750397U
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CN
China
Prior art keywords
alkali
pond
automatic
pool
subtraction
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Expired - Fee Related
Application number
CN201420034881.4U
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Chinese (zh)
Inventor
李学良
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GONGYI LIANGHUI ENVIRONMENTAL PROTECTION MACHINERY EQUIPMENT FACTORY
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GONGYI LIANGHUI ENVIRONMENTAL PROTECTION MACHINERY EQUIPMENT FACTORY
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Priority to CN201420034881.4U priority Critical patent/CN203750397U/en
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Publication of CN203750397U publication Critical patent/CN203750397U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an automatic alkali adding device of a circulating alkali pool in double-alkali desulfurization process, wherein a bracket and an alkali adding container are arranged on the upper side of the alkali pool; the lower end of the alkali adding container is communicated with alkali solution in the alkali pool by virtue of a pipeline; a control valve is arranged on the pipeline; a pH meter is arranged in the alkali pool; a signal wire of the pH meter is connected with the input end of a controller U; the control end of the control valve is connected with the output end of the controller. As the automatic alkali adding device is arranged on the alkali pool, the pH value in the alkali pool can be detected automatically, and the alkali adding quantity and time can be controlled according to the pH value so as to add the alkali accurately and timely. The pH value can be regulated in a matched manner by use of a mode of controlling a water replenishing pipe, so that the effect is better. The automatic alkali adding device disclosed by the utility model has simple structure, is easy to process or reform, and is very conducive to promote and implement.

Description

Circulation alkali pond automatic alkali adding device in two subtraction sulfur removal technologies
Technical field
The utility model relates to flue gas desulfurization and dedusting technical field, is specifically related to circulation alkali pond automatic alkali adding device in a kind of pair of subtraction sulfur removal technology.
Background technology
Raw flue gas for power plant or Some Enterprises discharge is carried out desulfurization and dedusting processing, conventionally adopts at present the reverse absorption pattern that sprays alkali lye in dedusting and desulfurizing tower.For example, adopt two alkaline process to absorb SO 2the essence of mode be to SO with NaOH reaction solution 2absorb, generate Na 2sO 3, NaHSO 3or Na 2sO 4solution, conventionally need to be to Na 2sO 3, NaHSO 3or Na 2sO 4solution is processed to again sodium ion is recycled, thereby reaches the object recycling, and can save a large amount of NaOH reaction solutions, thereby cost-saving.In practical work process, due to Na 2sO 3, NaHSO 3and Na 2sO 4na ion in solution is difficult to all replaced NaOH reaction solutions that out forms, and causes NaOH reaction solution concentration to reduce, and desulfuration efficiency declines, so need often to add NaOH concentrated solution in two subtraction sweetening process, allocates.The opportunity and the used in amounts that add NaOH concentrated solution will accurately be controlled, and in the situation that not wasting NaOH concentrated solution, the pH value of NaOH reaction solution needs in the reasonable scope, sweetening process: NaOH+SO 2→ Na 2sO 3+ H 2o (1); Na 2sO 3+ SO 2+ H 2o → NaHSO 3(2).Above two formula apparent absorption liquid caustic soda liquid are different and different: when alkalescence is higher, (1) formula is major way; Alkalescence is reduced to neutrality when even acid (during 5 < PH < 9), according to (2) formula, reacts.The pH value difference of NaOH reaction solution will affect desulfurized effect and generate NaHSO 3, NaHSO 3be easy to again decompose generation SO 2, in practical application, need to make improvement to accurately adding the technology of alkali, however the current device that is not applicable to two subtraction automatic alkali addings, so cause desulfurized effect not good.
Utility model content
The purpose of this utility model be to provide a kind of can be accurately, the device of punctual automatic alkali adding, for improving two subtraction sulfur removal technologies, manually add alkali and easily cause inaccurate problem.
The technical scheme in the invention for solving the technical problem is: circulation alkali pond automatic alkali adding device in a kind of pair of subtraction sulfur removal technology, at alkali pond upside, be provided with support and be provided with and add alkali container, the described lower end that adds alkali container is communicated with alkali lye in alkali pond by pipeline, on pipeline, be provided with control valve, in alkali pond, be provided with PH detector simultaneously, PH detector with holding wire be connected with the input of controller U, the control end of control valve is connected with the output of controller.
In alkali pond, be provided with apocenosis passage, desulfur pump is installed on apocenosis passage.
Alkali pond upside is provided with filling pipe.Water pump or magnetic valve can be installed on filling pipe, and the control start end of water pump or magnetic valve is connected with the output of controller U.
Alkali pond one side is provided with sedimentation basin, and alkali pond is communicated with sedimentation basin upside.
Beneficial effect: the utility model is provided with automatic alkali adding device on alkali pond, can detect the pH value in alkali pond automatically, according to the control of pH value, adds alkali number and add-subtract time, reaches the object that adds accurately, in time alkali.Utilize the mode of controlling filling pipe can coordinate adjusting pH value, better effects if.The utility model is simple in structure, and easily processing or transformation are beneficial to promotion and implementation very much.
Accompanying drawing explanation
Figure l is two subtraction desulfurization process figure;
Fig. 2 is the structural representation of the utility model automatic alkali adding device.
Number in the figure 1 is alkali pond, and 2 is sedimentation basin, and 3 is PH detector, and 4 is support, and 5 for adding alkali container, and 6 is concentrated solution alkali, and 7 is circulation alkali liquor, and 8 is apocenosis passage, and 9 is controller, and 10 is filling pipe.
The specific embodiment
Embodiment 1: circulation alkali pond automatic alkali adding device in a kind of pair of subtraction sulfur removal technology is for the improvement technology that shown in Fig. 1, two subtraction sulfur removal technologies are made, and is NaOH solution in alkali pond, in alkali pond, is provided with apocenosis passage, and desulfur pump is installed on apocenosis passage.With desulfur pump, alkali lye is pumped in desulfurizing tower to the sweetening process in desulfurizing tower: NaOH+SO 2→ Na 2sO 3+ H 2o(1); Na 2sO 3+ SO 2+ H 2o → NaHSO 3(2).Above two formula apparent absorption liquid caustic soda liquid are different and different: when alkalescence is higher, (1) formula is major way; Alkalescence is reduced to neutrality when even acid (during 5 < PH < 9), according to (2) formula, reacts.
As Fig. 2, alkali pond 1 one sides are provided with sedimentation basin 2, and alkali pond 1 is communicated with sedimentation basin 2 upsides.At alkali pond 1 upside, be provided with support 4 and be provided with and add alkali container 5, the described lower end that adds alkali container 5 is communicated with alkali lye in alkali pond by pipeline, on pipeline, be provided with control valve, in alkali pond, be provided with PH detector 3 simultaneously, PH detector 3 with holding wire be connected with the input of controller 9, the control end of control valve is connected with the output of controller 9, and detecting pH value is to mend in time alkali being not more than 9, meets 9≤PH≤12.Utilize controller 9 can automatically detect the pH value in alkali pond, according to the control of pH value, add alkali number and add-subtract time, reach the object that adds accurately, in time alkali.
Embodiment 2: on embodiment 1 basis, in alkali pond, 1 upside is provided with filling pipe 10.Can on filling pipe 10, magnetic valve be installed, the control start end of magnetic valve is connected with the output of controller 9.Utilize the mode of controlling filling pipe can coordinate adjusting pH value, better effects if.The utility model is simple in structure, and easily processing or transformation are beneficial to promotion and implementation very much.

Claims (5)

1. circulation alkali pond automatic alkali adding device in two subtraction sulfur removal technologies, it is characterized in that: at alkali pond upside, be provided with support and be provided with and add alkali container, the described lower end that adds alkali container is communicated with alkali lye in alkali pond by pipeline, on pipeline, be provided with control valve, in alkali pond, be provided with PH detector simultaneously, PH detector with holding wire be connected with the input of controller U, the control end of control valve is connected with the output of controller.
2. circulation alkali pond automatic alkali adding device according to claim 1 pair of subtraction sulfur removal technology, is characterized in that: in alkali pond, be provided with apocenosis passage, desulfur pump is installed on apocenosis passage.
3. circulation alkali pond automatic alkali adding device according to claim 1 pair of subtraction sulfur removal technology, is characterized in that: alkali pond upside is provided with filling pipe.
4. circulation alkali pond automatic alkali adding device according to claim 3 pair of subtraction sulfur removal technology, is characterized in that: water pump or magnetic valve are installed on filling pipe, and the control start end of water pump or magnetic valve is connected with the output of controller U.
5. circulation alkali pond automatic alkali adding device according to claim 1 pair of subtraction sulfur removal technology, is characterized in that: alkali pond one side is provided with sedimentation basin, and alkali pond is communicated with sedimentation basin upside.
CN201420034881.4U 2014-01-21 2014-01-21 Automatic alkali adding device of circulating alkali pool in double-alkali desulfurization process Expired - Fee Related CN203750397U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420034881.4U CN203750397U (en) 2014-01-21 2014-01-21 Automatic alkali adding device of circulating alkali pool in double-alkali desulfurization process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420034881.4U CN203750397U (en) 2014-01-21 2014-01-21 Automatic alkali adding device of circulating alkali pool in double-alkali desulfurization process

Publications (1)

Publication Number Publication Date
CN203750397U true CN203750397U (en) 2014-08-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980847A (en) * 2018-05-31 2018-12-11 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN110237670A (en) * 2019-06-27 2019-09-17 成都海成环保工程有限公司 It is a kind of to use Dual alkali circulation desulfurization system and its sulfur removal technology

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980847A (en) * 2018-05-31 2018-12-11 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN108980847B (en) * 2018-05-31 2019-09-20 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN110237670A (en) * 2019-06-27 2019-09-17 成都海成环保工程有限公司 It is a kind of to use Dual alkali circulation desulfurization system and its sulfur removal technology
CN110237670B (en) * 2019-06-27 2021-06-18 成都海成环保工程有限公司 Circulating desulfurization system adopting double-alkali method and desulfurization process thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140806

Termination date: 20160121

EXPY Termination of patent right or utility model