CN215946812U - Measure MVR evaporation equipment high temperature steam's conductivity device - Google Patents
Measure MVR evaporation equipment high temperature steam's conductivity device Download PDFInfo
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- CN215946812U CN215946812U CN202122621882.1U CN202122621882U CN215946812U CN 215946812 U CN215946812 U CN 215946812U CN 202122621882 U CN202122621882 U CN 202122621882U CN 215946812 U CN215946812 U CN 215946812U
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Abstract
The utility model belongs to the technical field of MVR evaporation for landfill leachate treatment, and particularly relates to a device for measuring the conductivity of high-temperature steam of MVR evaporation equipment, which comprises the following components: MVR evaporation equipment and conductivity mechanism, MVR evaporation equipment including be used for the heat exchanger of recovered energy, pipe connection in the separator of heat exchanger output side, pipe connection in heater on the separator, pipe connection in the circulating pump of heater input side, connect in the heater is used for collecting the distilled water jar of distilled water, connect in distilled water pump, pipe connection between distilled water jar and the heat exchanger the separator output side acid wash gas tower, pipe connection in the caustic wash gas tower of acid wash gas tower output side. According to the utility model, the purification degree of the steam purified by the pickling gas can be monitored in real time through the conductivity mechanism, and the adding amount of the acid in the pickling gas tower can be directly related to the conductivity of the device to increase and decrease.
Description
Technical Field
The utility model relates to the technical field of MVR evaporation in landfill leachate treatment, in particular to a device for measuring the conductivity of high-temperature steam of MVR evaporation equipment.
Background
MVR is a short for mechanical vapor recompression technology, and is an energy-saving technology which utilizes secondary vapor and energy thereof generated by an evaporation system to improve low-grade vapor into high-grade vapor heat source through mechanical work of a compressor, so that heat energy is provided for the evaporation system in a circulating manner, and the requirement on external energy is reduced.
The existing MVR evaporation equipment has certain defects in the practical application process, for example, the purification degree of steam after acid washing gas purification is not convenient to monitor, the reflection degree is not ideal, the adding amount of acid cannot be adjusted properly, the cost is increased, and the unreasonable effect is achieved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the utility model is as follows:
an apparatus for measuring the conductivity of high-temperature vapor of an MVR evaporation device comprises: the MVR evaporation equipment comprises a heat exchanger for recovering energy, a separator connected to the output side of the heat exchanger through a pipeline, a heater connected to the separator through a pipeline, a circulating pump connected to the input side of the heater through a pipeline, a distilled water tank connected to the heater and used for collecting distilled water, a distilled water pump connected between the distilled water tank and the heat exchanger, an acid washing gas tower connected to the output side of the separator through a pipeline, an alkaline washing gas tower connected to the output side of the acid washing gas tower through a pipeline, a vapor compressor connected between the output side of the alkaline washing gas tower and the input side of the heater, and a vapor generator connected to the input side of the heater and used for heating; the conductivity mechanism is connected between the output side of the acid gas washing tower and the input side of the alkali gas washing tower, and comprises a first manual valve, a cooler, a conductivity meter, a third manual valve and a second manual valve, wherein the first manual valve is connected to a conveying pipeline between the acid gas washing tower and the alkali gas washing tower through a pipeline, the cooler is connected to the other side of the first manual valve, the conductivity meter is connected to the cooler and used for monitoring, the third manual valve is connected to the output side of the conductivity meter, and the second manual valve is connected to the front end of the third manual valve and used for sampling.
By adopting the technical scheme, the purification degree of the steam purified by the pickling gas can be monitored in real time through the conductivity mechanism, and the adding amount of the acid in the pickling gas tower can be directly related to the conductivity of the device to increase and decrease.
The present invention in a preferred example may be further configured to: the bottom of the separator is also connected with a slurry pump, and the output end of the slurry pump is connected to the heat exchanger.
Through adopting above-mentioned technical scheme, can carry the accumulation to MVR forced circulation evaporation system and carry out the concentration processing.
The present invention in a preferred example may be further configured to: the heater is also provided with an exhaust port for exhausting.
Through adopting above-mentioned technical scheme for the exhaust operation is convenient for retrieve the heat.
The present invention in a preferred example may be further configured to: and the output ends of the bottom parts of the acid gas washing tower and the alkali gas washing tower are respectively connected with a pump, and the output ends of the pump are respectively connected with demisters respectively positioned in the acid gas washing tower and the alkali gas washing tower.
By adopting the technical scheme, the gas-liquid separation operation can be carried out.
The present invention in a preferred example may be further configured to: the heat exchanger is provided with two groups which are connected in parallel.
By adopting the technical scheme, the waste heat recovery amount can be improved, and the whole operation amount can be increased.
The present invention in a preferred example may be further configured to: and steam filter plates are respectively arranged on the inner sides of the acid-washing gas tower, the alkali-washing gas tower and the separator.
Through adopting above-mentioned technical scheme, can purify steam, improve steam quality.
The technical scheme of the utility model has the following beneficial technical effects:
1. according to the utility model, the purification degree of the steam purified by the pickling gas can be monitored in real time through the conductivity mechanism, and the adding amount of the acid in the pickling gas tower can be directly related to the conductivity of the device to increase and decrease.
2. In the utility model, the adding amount of acid in the acid-washing gas tower before the device is used is increased through the conductivity of cooling water after the alkali-washing gas tower, the conductivity after the alkali-washing gas tower is influenced by the adding amount of alkali, the purification degree of the acid-washing gas tower cannot be reflected in time, and the adding amount of acid can be saved after the device is used, so that the production cost is saved.
3. According to the utility model, the purification effect of the acid washing gas tower can be directly judged through the conductivity mechanism, and the influence of sodium hydroxide of the alkaline washing gas tower is avoided.
4. According to the utility model, through the conductivity mechanism, the demisting effect of the demister of the acid scrubbing tower can be fed back, the alkali scrubbing tower can be better protected from corrosion, and the service life of equipment is prolonged.
Drawings
FIG. 1 is a schematic connection diagram of the present invention;
fig. 2 is a schematic view of the conductivity mechanism of the present invention.
Reference numerals:
100. an MVR evaporation plant; 110. a heat exchanger; 120. a separator; 121. a slurry pump; 130. a heater; 131. a steam generator; 132. an exhaust port; 140. a circulation pump; 150. a distilled water tank; 160. a distilled water pump; 170. an acid gas washing tower; 171. a pump machine; 172. a demister; 180. an alkali scrubber; 190. a vapor compressor;
200. a conductivity mechanism; 210. a first manual valve; 220. a cooler; 230. a conductivity meter; 240. a manual valve III; 250. and a second manual valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
It is to be understood that this description is made only by way of example and not as a limitation on the scope of the utility model.
The following describes a device for measuring the conductivity of high-temperature steam of an MVR evaporation device, which is provided by some embodiments of the present invention, with reference to the attached drawings.
Referring to fig. 1-2, the present invention provides a device for measuring the conductivity of high temperature steam of an MVR evaporation apparatus, including: an MVR evaporation device 100 and an electric conductivity mechanism 200, wherein the MVR evaporation device 100 comprises a heat exchanger 110 for recovering energy, a separator 120 connected with the output side of the heat exchanger 110 through a pipeline, a heater 130 connected with the separator 120 through a pipeline, a circulating pump 140 connected with the input side of the heater 130 through a pipeline, a distilled water tank 150 connected with the heater 130 for collecting distilled water, a distilled water pump 160 connected between the distilled water tank 150 and the heat exchanger 110, an acid washing gas tower 170 connected with the output side of the separator 120 through a pipeline, an alkali washing gas tower 180 connected with the output side of the acid washing gas tower 170 through a pipeline, a steam compressor 190 connected between the output side of the alkali washing gas tower 180 and the input side of the heater 130 and a steam generator 131 connected with the input side of the heater 130 for heating, a slurry pump 121 is further connected with the bottom of the separator 120, and the output end of the slurry pump 121 is connected with the heat exchanger 110, the heater 130 is also provided with an exhaust port 132 for exhausting air, the output ends of the bottoms of the acid washing gas tower 170 and the alkali washing gas tower 180 are respectively connected with a pump machine 171, the output ends of the pump machines 171 are respectively connected with demister 172 respectively positioned in the acid washing gas tower 170 and the alkali washing gas tower 180, the heat exchanger 110 is provided with two groups connected in parallel, the high-efficiency operation is convenient, the purification degree of the steam purified by the acid washing gas can be monitored in real time through the device, the adding amount of the acid in the acid washing gas tower can be directly related to the conductivity of the device to increase and decrease, the adding amount of the acid in the acid washing gas tower before the device is used is increased through the conductivity of the cooling water behind the alkali washing gas tower, the conductivity behind the alkali washing gas tower can be influenced by the adding amount of the alkali, the purification degree of the acid washing gas tower can not be reflected in time, the adding amount of the acid can be saved after the device is used, the production cost is saved, and the purification effect of the acid washing gas tower can be directly judged at the same time, the effect of the sodium hydroxide of the alkaline washing gas tower is avoided, the defogging effect of the demister of the acid washing gas tower can be fed back, the alkaline washing gas tower can be better protected from corrosion, the service life of equipment is prolonged, and the popularization and the use are convenient.
Specifically, the insides of the acid washing gas tower 170, the alkali washing gas tower 180 and the separator 120 are respectively provided with a steam filter plate for filtering the circulating steam.
In this embodiment, the heater 130 is a tubular heat exchanger, and mainly exchanges heat between purified water vapor and the incoming liquid, the water vapor releases latent heat and then becomes distilled water, and the latent heat released by the water vapor heats the incoming liquid;
the separator 120 is used for circulating the materials in the reaction process of the heater 130 and performing gas-liquid separation;
the steam generator 131 mainly functions to heat water into steam to heat the equipment, and mainly works in that the steam generator is required to provide energy for the equipment when the equipment is just started, so that the heating time of the equipment is shortened;
the acid scrubber tower 170 is mainly used for removing ammonia nitrogen, vapor evaporated by the secondary evaporator is mixed and purified by the acid scrubber tower and dilute sulfuric acid to remove ammonia nitrogen in the vapor, and the ammonia nitrogen in the effluent directly reaches the emission standard;
the alkali gas washing tower 180 is mainly used for removing COD, steam purified by the acid gas washing tower enters the alkali gas washing tower through the demister to react with sodium hydroxide, the COD in the steam is removed, and the COD of the effluent directly reaches the discharge standard;
the steam compressor 190 heats and pressurizes the water vapor by the work of the compressor, and the water vapor with higher pressure and temperature is sent back to the preheater to exchange heat with the incoming liquid to be evaporated, so as to heat the incoming liquid, and finally the water vapor releases latent heat to be distilled.
As shown in fig. 2, the conductivity mechanism 200 is connected between the output side of the acid scrubber 170 and the input side of the alkaline scrubber 180, the conductivity mechanism 200 comprises a first manual valve 210 connected to a transmission pipeline between the acid scrubber 170 and the alkaline scrubber 180 through a pipeline, a cooler 220 connected to the other side of the first manual valve 210, a conductivity meter 230 connected to the cooler 220 for monitoring, a third manual valve 240 connected to the output side of the conductivity meter 230, and a second manual valve 250 connected to the front end of the third manual valve 240 for sampling, wherein the first manual valve 210 has two functions, one of which is to adjust the inflow rate of steam; the second manual valve 250 is used for cutting off, when the conductivity needs to be maintained and replaced, the valve can be closed to play a role in cutting off, the type of the cooler 220 is a tubular heat exchanger, the medium in the tube is steam, the medium outside the tube is cooling water, the steam in the tube is cooled by the cooling water after evaporation passes through the cooler, the steam is cooled into distilled water after releasing latent heat, the conductivity meter 230 is used for monitoring the conductivity of the condensed water, the third manual valve 240 is mainly used for cutting off, when the conductivity needs to be maintained and replaced, the valve can be closed to play a role in cutting off, and the second manual valve 250 is also called a sampling valve and can be used for taking a water sample through the valve.
It should be noted that after being pretreated, the landfill leachate is conveyed to a heat exchanger 110 by a water inlet pump to exchange heat with distilled water discharged from a system and recover energy of non-condensable gas, and then enters a main body of the MVR evaporation plant 100 to be evaporated, evaporated water becomes steam, the steam enters an acid scrubber 170 after gas-liquid separation to remove ammonia nitrogen, then enters an alkali scrubber 180 after gas-liquid separation by a demister 172, the steam is extracted from the steam scrubber system by a steam compressor 190 after organic matters are removed in the alkali scrubber 180, the steam returns to an evaporation unit of the MVR evaporation plant 100 after being compressed and temperature-raised by the steam compressor 190 to heat low-temperature materials, the steam discharges latent heat and then is cooled to become distilled water, the distilled water is temporarily stored in a distilled water tank 150 and then conveyed to the heat exchanger 110 by a distilled water pump 160 to be discharged from the system after energy recovery, and unevaporated liquid is collected at the bottom of the separator 120, one part is mixed with the landfill leachate and then continuously circulated and evaporated, and the other part is conveyed to an MVR forced circulation evaporation system by a slurry pump 121 after the concentration of the other part is high by multiple times, and then the concentrated solution is concentrated.
The working principle and the using process of the utility model are as follows: firstly, gas obtained after garbage leachate is evaporated and separated through a separator 120 and a heater 130 enters an acid washing gas tower 170, ammonia nitrogen in the leachate is removed through an instant reaction of ammonia nitrogen in the steam and dilute sulfuric acid, most of steam obtained after acid washing and purification enters an alkali washing gas tower 180, a small amount of steam enters an alkali washing gas tower after passing through a conductivity mechanism 200, the gas inlet flow is adjusted through a first manual valve 210, then the gas enters a cooler 220, the steam is condensed into water, the conductivity is monitored in real time through a conductivity meter 230, distilled water passing through the conductivity meter 230 is left to the alkali washing gas tower 180 for continuous treatment, the steam and liquid entering the alkali washing gas tower 180 are instantly reacted with a sodium hydroxide solution to remove organic matters in the leachate, the organic matters are purified through the acid washing gas tower 170 and the alkali washing gas tower 180 and then are compressed by a steam compressor 190 to be heated and returned to the MVR evaporation equipment 100 to heat low-temperature materials, and the steam is cooled to be distilled water after releasing latent heat, the distilled water is temporarily stored in the distilled water tank 150, and then is delivered to the heat exchanger 110 by the distilled water pump 160 to be discharged out of the system after energy recovery.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.
Claims (6)
1. An apparatus for measuring the conductivity of high-temperature steam of an MVR evaporation device, comprising:
an MVR evaporation equipment (100) comprises a heat exchanger (110) for recovering energy, a separator (120) connected with the output side of the heat exchanger (110) through a pipeline, a heater (130) connected with the separator (120) through a pipeline, a circulating pump (140) connected with the input side of the heater (130) through a pipeline, and a distilled water tank (150) connected with the heater (130) and used for collecting distilled water, a distilled water pump (160) connected between the distilled water tank (150) and the heat exchanger (110), an acid washing gas tower (170) connected with the output side of the separator (120) through pipelines, an alkali washing gas tower (180) connected with the output side of the acid washing gas tower (170) through pipelines, a vapor compressor (190) connected between the output side of the alkali washing gas tower (180) and the input side of the heater (130), and a vapor generator (131) connected on the input side of the heater (130) for heating;
the conductivity mechanism (200) is connected between the output side of the acid gas washing tower (170) and the input side of the alkali gas washing tower (180), and the conductivity mechanism (200) comprises a first manual valve (210) connected to a conveying pipeline between the acid gas washing tower (170) and the alkali gas washing tower (180) through a pipeline, a cooler (220) connected to the other side of the first manual valve (210), a conductivity meter (230) connected to the cooler (220) for monitoring, a third manual valve (240) connected to the output side of the conductivity meter (230) and a second manual valve (250) connected to the front end of the third manual valve (240) for sampling.
2. The apparatus for measuring the conductivity of high-temperature steam of an MVR evaporation plant according to claim 1, wherein a slurry pump (121) is further connected to the bottom of the separator (120), and the output end of the slurry pump (121) is connected to the heat exchanger (110).
3. The apparatus for measuring the conductivity of high temperature steam in an MVR evaporation apparatus according to claim 1, wherein the heater (130) is further provided with an exhaust port (132) for exhausting air.
4. The device for measuring the conductivity of the high-temperature steam of the MVR evaporation equipment according to claim 1, wherein the output ends of the bottoms of the acid scrubber gas tower (170) and the alkaline scrubber gas tower (180) are respectively connected with a pump (171), and the output ends of the pump (171) are respectively connected with a demister (172) respectively positioned in the acid scrubber gas tower (170) and the alkaline scrubber gas tower (180).
5. The apparatus for measuring the conductivity of high-temperature steam in an MVR evaporation plant according to claim 1, wherein said heat exchanger (110) has two sets connected in parallel.
6. The apparatus for measuring the conductivity of high-temperature steam of MVR evaporation equipment according to claim 1, wherein the inside of said acid scrubber tower (170), said alkali scrubber tower (180) and said separator (120) are respectively provided with a steam filtering plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122621882.1U CN215946812U (en) | 2021-10-29 | 2021-10-29 | Measure MVR evaporation equipment high temperature steam's conductivity device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122621882.1U CN215946812U (en) | 2021-10-29 | 2021-10-29 | Measure MVR evaporation equipment high temperature steam's conductivity device |
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| CN215946812U true CN215946812U (en) | 2022-03-04 |
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| CN202122621882.1U Active CN215946812U (en) | 2021-10-29 | 2021-10-29 | Measure MVR evaporation equipment high temperature steam's conductivity device |
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