CN203569200U - Condensation water recovering system in evaporation process - Google Patents
Condensation water recovering system in evaporation process Download PDFInfo
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- CN203569200U CN203569200U CN201320486415.5U CN201320486415U CN203569200U CN 203569200 U CN203569200 U CN 203569200U CN 201320486415 U CN201320486415 U CN 201320486415U CN 203569200 U CN203569200 U CN 203569200U
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Abstract
The utility model relates to the field of industrial waste water recovering, and particularly relates to a condensation water recovering system in an evaporation process. The condensation water recovering system comprises an evaporator, a condenser, a process condensation water jar and an electrobath cathode chamber which are sequentially connected; condensation water generated by the evaporator and the condenser is conveyed to an electrobath cathode chamber to be used as a dilution medium, so that the process condensation water is recovered; a pipeline where the process condensation water jar is connected with the electrobath cathode chamber is provided with a first pH meter and a first flow meter for monitoring the flow rate and pH value of condensation water entering the electrobath cathode chamber; as the pipeline between the first pH meter and a first control valve is connected with a pipeline leading to a primary brine refining unit, when the pH value of process condensation water does not meet requirements, the process condensation is discharged to the primary brine refining unit for salt dissolving, the process condensation water is treated and reused effectively, and therefore the compensative high-efficient utilization of the process condensation water is achieved.
Description
Technical field
The utility model relates to industrial sewage and recycles field, relates in particular to a kind of evaporation technology water of condensation recycling system.
Background technology
In recent years, at the development intermediate ion membrane electrolyser of China's chlor-alkali industry, increasingly replace diaphragm sell and mercury cell, ion-exchange membrane electrolyzer produces alkali concn can directly reach 32%.Stable for maintaining electric tank cathode chamber outlet concentration of lye, and take away the inner heat producing of electrolyzer, must in the circulation fluid that enters electric tank cathode chamber, add part pure water as diluent media, will accurately control pure water addition simultaneously, otherwise will cause departing from of negative electrode concentration of lye.For production capacity, be the ion-membrane electrolysis device of 200,000 tons/year, the about 25m3/h of electric tank cathode pure water consumption, Purified Water Station operating pressure is large.And simultaneously, in chlor-alkali plant, in obtaining the process of different concns caustic soda product, evaporation unit and condenser can produce a large amount of water of condensation, these water of condensation conventionally can not be utilized effectively but go out as sewage discharge, environment has been caused to pollution, and also can waste a small amount of alkali lye containing in these water of condensation, so at chlor-alkali industry and even other chemical enterprises, how to reduce the usage quantity of pure water, reducing the outer discharge capacity of process condensate water, is the biggest problem that the sector faces thereby solve water balance problem.
At present, although some data show, industry water of condensation can be used as electrolysis pure water, but lack corresponding implementing measure, and because technique has strict demand to entering potential of hydrogen and the addition of the diluent media of electrolyzer, if undesirable, can destroy ionic membrane, be that current chlor-alkali industry process condensate water is recycled the important problem facing so how to guarantee to meet the requirements and how effectively to process when process condensate water is undesirable into the process condensate water of electric tank cathode chamber.
Therefore,, for above deficiency, the utility model provides a kind of evaporation technology water of condensation recycling system.
Utility model content
(1) technical problem that will solve
The purpose of this utility model be to provide a kind of evaporation technology water of condensation recycling system with efficient recovery process condensate water, guarantee meet the requirements and when process condensate water is undesirable, it effectively processed into the process condensate water of electric tank cathode chamber, thereby realize the comprehensive high-efficiency utilization to process condensate water.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of evaporation technology water of condensation recycling system, it comprises the evaporation unit connecting successively, condenser, process condensate water pot and electric tank cathode chamber, on the pipeline near described process condensate water pot outlet, the first pH meter is set, near on the pipeline of described electric tank cathode chamber import, the first control valve and first flow meter are being set, pipeline between described the first pH meter and described the first control valve is connected with towards the pipeline of primary refined brine unit, described leading on the pipeline of primary refined brine unit, is provided with the second control valve.
Wherein, on the pipeline near described process condensate water pot outlet, be provided with process condensate water pump.
Wherein, two described process condensate water pumps are arranged in parallel on described process condensate water pot export pipeline.
Wherein, on described condenser and the tank connected pipeline of described process condensate water, be provided with the second pH meter.
Wherein, the top of described process condensate water pot is connected with a pure water tank by the 3rd control valve.
Wherein, described pure water tank and the tank connected pipeline of described process condensate water are provided with the second under meter.
Wherein, on described condenser and the tank connected pipeline of described process condensate water, be provided with the 4th control valve.
Wherein, on described process condensate water pot, be provided with level transmitting meter, for detection of the liquid level of the process condensate water in process condensate water pot.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: the evaporation technology water of condensation recycling system that the utility model provides is by being connected evaporation unit, condenser, process condensate water pot and electric tank cathode chamber successively, the water of condensation of evaporation unit and condenser generation is delivered to electric tank cathode chamber as diluent media, has effectively reclaimed process condensate water; The first pH meter and first flow meter are set on the pipeline being connected with electric tank cathode chamber at process condensate water pot, monitoring enters the flow of water of condensation of electric tank cathode chamber and potential of hydrogen to guarantee the stable of negative electrode concentration of lye and potential of hydrogen, guarantees to meet the requirements into the process condensate water of electric tank cathode chamber; Because the pipeline between described the first pH meter and described the first control valve is connected with towards the pipeline of primary refined brine unit, when the potential of hydrogen of process condensate water is undesirable, process condensate water, discharged to primary refined brine unit being used for salt, is carried out to processing and utilizing to process condensate water effectively; By the above-mentioned comprehensive high-efficiency to process condensate water, utilize, reduced the usage quantity of chlor-alkali plant pure water, alleviated the operating pressure of Purified Water Station, alleviated water balance problem, the problem of environmental pollution that outside process condensate water (being sewage), row causes and the problem that alkali lye is wasted have on a small quantity been avoided, reduce cost, realized energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the utility model embodiment evaporation technology water of condensation recycling system.
In figure, 1: evaporation unit; 2: condenser; 3: process condensate water pot; 4: process condensate water pump; 5: electric tank cathode chamber; 6: the first pH meters; 7: the first control valves; 8: first flow meter; 9: the second control valves; 10: pure water tank; 11: the three control valves; 12: the second under meters; 13: primary refined brine unit; 14: the second pH meters.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the utility model embodiment evaporation technology water of condensation recycling system comprises the evaporation unit 1 connecting successively, condenser 2, process condensate water pot 3, process condensate water pump 4 and electric tank cathode chamber 5, in figure, the direction of arrow represents the flow direction of process condensate water, the pipeline that leads to electric tank cathode chamber 5 from process condensate water pump 4 at process condensate water sets gradually a pH meter 6, the first control valve 7 and first flow meter 8, on the pipeline that the first pH meter 6 is connected with the first control valve 7, separate another pipeline and lead to primary refined brine unit 13, on the pipeline of primary refined brine unit 13, be provided with the second control valve 9, on the pipeline that condenser 2 is connected with process condensate water pot 3, be provided with the second pH meter 14.
First the water of condensation that evaporation unit 1 and condenser 2 produce like this enters process condensate water pot 3, water of condensation is stored in and in process condensate water pot 3, guarantees certain buffering surplus, so that system stability moves continuously, then the process condensate water pump 4 of the outlet by process condensate water pot 3 is delivered to electric tank cathode chamber 5 by process condensate water, as the diluent media of circulation alkali liquor, in order to guarantee the stable of negative electrode circulation alkali liquor concentration and potential of hydrogen, must control flow and the potential of hydrogen of the water of condensation that enters electric tank cathode chamber 5, so the first pH meter 6 and first flow meter 8 are set on the pipeline being connected with electric tank cathode chamber 5 at process condensate water pot 3, due to evaporation unit 1, condenser 2 and process condensate water pot 3 likely adopt the container of irony or other metals, water of condensation produce and the process of carrying in likely with other impurity, affect the potential of hydrogen of water of condensation, so do not meet when entering electric tank cathode chamber 5 and requiring when the first pH meter 6 detects process condensate water, close the first control valve 7, open the second control valve 9 leading on primary refined brine unit 13 pipelines, water of condensation is delivered to primary refined brine unit 13, being used for salt, effectively process condensate water is carried out to processing and utilizing, and then realized the comprehensive high-efficiency utilization to process condensate water.
Wherein, because pH meter uses and is often out of order in reality, the accuracy detecting in order to strengthen potential of hydrogen, on the pipeline being connected with process condensate water pot 3 at condenser 2, be provided with the second pH meter 14, under potential of hydrogen that the first pH meter 6 and the second pH meter 14 show is consistent situation, accurate when the test of potential of hydrogen is described, if the potential of hydrogen that both show is not, in consistent situation, to illustrate that one of them has occurred fault.On described process condensate water pot 3 export pipelines, can be arranged in parallel two process condensate water pumps 4, one of them work of normal conditions, when breaking down for one, can be used another process condensate water pump.
Further, as shown in Figure 1, the top of described process condensate water pot 3 is connected with pure water tank 10 by the 3rd control valve 11, and the pipeline that pure water tank 10 is connected with described process condensate water pot 3 is also provided with the second under meter 12.When evaporation unit 1 load down work can not provide enough process condensate water, can open the 3rd control valve 11, pure water in pure water tank 10 is transported in process condensate water pot 3, and then transport to electric tank cathode chamber 5, guarantee the uninterrupted operation continuously of evaporation technology water of condensation recycling system and the whole process system of chlor-alkali plant.The second under meter 12 is wherein set, can accurately controls the pure water amount entering in process condensate water pot 3.Can certainly the 4th control valve be set at the pipeline being connected with process condensate water pot 3 at condenser 2 and enter the condensation water quantity in process condensate water pot 3 to control.
Further, on described process condensate water pot 3, by a pipe connecting flange, be provided with level transmitting meter, for detection of the liquid level of the process condensate water in process condensate water pot 3.Can monitor like this liquid level of the process condensate water in condensate water pot, thereby regulate and control accordingly, prevent that process condensate water pot 3 lacks of water or water spill-over from going out.
In actual production, by the chlor-alkali plant design calculation of the production capacities of 200,000 tons/year, adopt after evaporation technology water of condensation recycling system of the present utility model, the pure water 25m3 that saves per hour, (if production capacity is larger, save pure water amount also larger), when greatly reducing production cost, effectively utilize process condensate water, alleviated the water balance problem of chlor-alkali plant, reclaim a small amount of alkali lye containing in process condensate water simultaneously, reduced production loss.
In sum, the evaporation technology water of condensation recycling system that the utility model provides is by the evaporation unit 1, condenser 2, process condensate water pot 3, process condensate water pump 4 and the electric tank cathode chamber 5 that connect successively, the water of condensation of evaporation unit 1 and condenser 2 generations is delivered to electric tank cathode chamber 5 as diluent media, has effectively reclaimed process condensate water; By the first pH meter 6 and first flow meter 8 are set on the pipeline being connected with electric tank cathode chamber 5 at process condensate water pot 3, can monitor flow and the potential of hydrogen of the water of condensation that enters electric tank cathode chamber 5, guaranteed the stable of negative electrode concentration of lye and potential of hydrogen, guaranteed to meet the requirements into the process condensate water of electric tank cathode chamber 5; On the pipeline being connected with the first control valve 7 by the first pH meter 6, separate another pipeline and lead to primary refined brine unit 13, when the potential of hydrogen of process condensate water is undesirable, by process condensate water discharged to primary refined brine unit 13 for changing salt, effectively process condensate water is carried out to processing and utilizing, in conjunction with above-mentioned two kinds of modes, process condensate water is processed, realized the comprehensive high-efficiency utilization to process condensate water.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (8)
1. an evaporation technology water of condensation recycling system, it is characterized in that: it comprises the evaporation unit (1) connecting successively, condenser (2), process condensate water pot (3) and electric tank cathode chamber (5), on the pipeline near described process condensate water pot (3) outlet, the first pH meter (6) is set, near on the pipeline of described electric tank cathode chamber (5) import, the first control valve (7) and first flow meter (8) are being set, pipeline between described the first pH meter (6) and described the first control valve (7) is connected with towards the pipeline of primary refined brine unit (13), described leading on the pipeline of primary refined brine unit (13), is provided with the second control valve (9).
2. evaporation technology water of condensation recycling system according to claim 1, is characterized in that: on the pipeline near described process condensate water pot (3) outlet, be provided with process condensate water pump (4).
3. evaporation technology water of condensation recycling system according to claim 2, is characterized in that: two described process condensate water pumps (4) are arranged in parallel on described process condensate water pot (3) export pipeline.
4. evaporation technology water of condensation recycling system according to claim 1, is characterized in that: on the pipeline that described condenser (2) is connected with described process condensate water pot (3), be provided with the second pH meter (14).
5. evaporation technology water of condensation recycling system according to claim 1, is characterized in that: the top of described process condensate water pot (3) is connected with a pure water tank (10) by the 3rd control valve (11).
6. evaporation technology water of condensation recycling system according to claim 5, is characterized in that: the pipeline that described pure water tank (10) is connected with described process condensate water pot (3) is provided with the second under meter (12).
7. evaporation technology water of condensation recycling system according to claim 1, is characterized in that: on the pipeline that described condenser (2) is connected with described process condensate water pot (3), be provided with the 4th control valve.
8. evaporation technology water of condensation recycling system according to claim 7, is characterized in that: on described process condensate water pot (3), be provided with level transmitting meter, for detection of the liquid level of the process condensate water in process condensate water pot (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486415.5U CN203569200U (en) | 2013-08-07 | 2013-08-07 | Condensation water recovering system in evaporation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486415.5U CN203569200U (en) | 2013-08-07 | 2013-08-07 | Condensation water recovering system in evaporation process |
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| CN203569200U true CN203569200U (en) | 2014-04-30 |
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| CN201320486415.5U Expired - Fee Related CN203569200U (en) | 2013-08-07 | 2013-08-07 | Condensation water recovering system in evaporation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388157A (en) * | 2013-08-07 | 2013-11-13 | 内蒙古君正化工有限责任公司 | Condensed water recycling system for evaporation process |
| CN108982795A (en) * | 2018-07-19 | 2018-12-11 | 上海大众祥源动力供应有限公司 | A kind of condensed water networking pipe-line system |
-
2013
- 2013-08-07 CN CN201320486415.5U patent/CN203569200U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388157A (en) * | 2013-08-07 | 2013-11-13 | 内蒙古君正化工有限责任公司 | Condensed water recycling system for evaporation process |
| CN103388157B (en) * | 2013-08-07 | 2016-04-13 | 内蒙古君正化工有限责任公司 | A kind of evaporation technology condensation water recovery and use system |
| CN108982795A (en) * | 2018-07-19 | 2018-12-11 | 上海大众祥源动力供应有限公司 | A kind of condensed water networking pipe-line 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: 20140430 Termination date: 20180807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |