CN206337115U - A kind of MVR ammonia still processs integrated apparatus - Google Patents

A kind of MVR ammonia still processs integrated apparatus Download PDF

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Publication number
CN206337115U
CN206337115U CN201621313783.XU CN201621313783U CN206337115U CN 206337115 U CN206337115 U CN 206337115U CN 201621313783 U CN201621313783 U CN 201621313783U CN 206337115 U CN206337115 U CN 206337115U
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entrance
outlet
crystallizing evaporator
tower
mvr
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姜广义
区瑞锟
李宇翔
舒俭
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Guangzhou Schin-Tech Industrial Co Ltd
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Guangzhou Schin-Tech Industrial Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

Abstract

The utility model discloses a kind of MVR ammonia still processs integrated apparatus, capital equipment includes preheater, deammoniation tower, crystallizing evaporator, vapour compression machine and centrifuge, preheater is provided with the cold side input port for connecing high ammonia nitrogen and high salt waste water, the cold side outlet port of preheater and the waterwater entrance of deammoniation tower are connected, the wastewater outlet of deammoniation tower and the waterwater entrance of crystallizing evaporator are connected, the indirect steam outlet of crystallizing evaporator connects the carrier gas inlet and vapour compression machine entrance of deammoniation tower respectively, the magma outlet of crystallizing evaporator is connected with the magma entrance of centrifuge, centrifuge is exported provided with crystal salt.Use the utility model can with energy-conservation, efficiently the ammonia nitrogen removal desalting processing of high ammonia nitrogen and high salt waste water is realized, while zero-emission and the recycling of high ammonia nitrogen and high salt waste water can be realized.

Description

A kind of MVR ammonia still processs integrated apparatus
Technical field
The utility model belongs to field of industrial waste water treatment, and in particular to a kind of MVR ammonia still processs integrated apparatus.
Background technology
High ammonia-nitrogen wastewater generally refer to ammonia nitrogen concentration be more than 500mg/L waste water, be mainly derived from chemical fertilizer, coking, petrochemical industry, Pharmacy, food, refuse landfill etc., a large amount of ammonia nitrogen waste waters, which are discharged into water body, not only to be caused body eutrophication, causes black and odorous water, The difficulty and added cost of Water purification, or even to crowd and biological generation toxic action.
Handle high ammonia nitrogen and high salt waste water when, first to waste water carry out deamination processing, after to waste water carry out condensing crystallizing processing.
In the prior art, it is main to remove ammonia nitrogen in high density using blow-off method and air- extraction.Blow-off method often uses air conduct Carrier, gas is passed through in water, gas-liquid is mutually fully contacted, and the free ammonia dissolved in water is passed through gas-liquid interface, to gas phase Transfer, so as to reach the purpose of removal of ammonia and nitrogen, but uses the less efficient of this method ammonia nitrogen removal, water outlet ammonia nitrogen is still higher.Vapour Free ammonia in high ammonia-nitrogen wastewater is changed into ammonia with fresh steam and escaped, i.e., in high ph-values by formulation often with steam as carrier When, make waste water and steam close contact, so that the process of ammonia density in waste water is reduced, but it is substantial amounts of fresh to use this method to need Steam, horsepower requirements are high, and heat utilization rate is low.
In subsequent technique, frequently with multi-effect evaporation system, steam when prior art is to waste water progress condensing crystallizing processing Condensed water is expelled directly out system, equally exists that fresh steam demand amount is big, horsepower requirements are high, the thermal efficiency is low, equipment occupation space is big The problems such as.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of energy-conservation, efficient MVR ammonia still processs one Makeup is put, and is handled high ammonia nitrogen and high salt waste water by the utility model, energy consumption can be substantially reduced, while the zero-emission of waste water can be realized And recycling.
To achieve the above object, the technical scheme that the utility model is used is:A kind of MVR ammonia still processs integrated apparatus, bag Include deammoniation tower, crystallizing evaporator and vapour compression machine;The indirect steam outlet of the crystallizing evaporator connects deammoniation tower respectively Carrier gas inlet and vapour compression machine entrance;The vapour compression machine outlet is connected with crystallizing evaporator steam inlet;The evaporation Crystallizer is provided with fresh steam inlet;The ratio of the deamination carrier gas flux of the deammoniation tower and the wastewater flow of the deammoniation tower is 1/ 5~1/15。
As the further improvement of above-mentioned technical proposal, the wastewater outlet of the deammoniation tower is useless with the crystallizing evaporator Water inlet is connected.
As the further improvement of above-mentioned technical proposal, also including centrifuge;The magma entrance and mother liquor of the centrifuge Outlet is exported respectively with the magma of the crystallizing evaporator and mother liquor entrance is connected, and the centrifuge is exported provided with crystal salt.
As the further improvement of above-mentioned technical proposal, also including preheater;The preheater is provided with and connects high ammonia nitrogen and high salt The cold side input port of waste water, the cold side outlet port of the preheater is connected with the waterwater entrance of the deammoniation tower, and hot side entrance steams with described Send out the condensation-water drain connection of crystallizer.
As the further improvement of above-mentioned technical proposal, also including absorption tower and vavuum pump;The ammonia on the absorption tower enters Mouth is connected with the ammonia outlet of the deammoniation tower, and the offgas outlet on the absorption tower is connected with the entrance of the vavuum pump;It is described true Empty pump is provided with offgas outlet.
As the further improvement of above-mentioned technical proposal, the absorbing liquid entrance on the absorption tower and the hot side of the preheater Outlet connection, the absorption tower is exported provided with ammoniacal liquor.
As the further improvement of above-mentioned technical proposal, also including resin container;The condensing water inlet of the resin container and institute The hot side outlet connection of preheater is stated, the resin container is provided with reuse water out;The resin container is provided with regenerated liquid entrance, the resin The regenerated liquid outlet of tank is connected with the absorbing liquid entrance on the absorption tower;The absorption tower goes out provided with absorbing liquid entrance and ammonium salt Mouthful.
Using the utility model, solve that processing high ammonia nitrogen and high salt waste water fresh steam demand amount is big, high energy consumption, heat energy utilization The low problem of rate, the beneficial effects of the utility model are as follows.
1st, by the coupling of deammoniation tower and crystallizing evaporator, the utilization of heat energy is optimized, heat utilization rate is improved, reduced Enter the quantity of steam of vapour compression machine, reduce the treating capacity of vapour compression machine, save equipment investment cost, while significantly Reduce energy consumption.
2nd, it using the evaporation of crystallizing evaporator, can not only crystallize Waste water concentrating, and can play secondary to waste water The effect of deamination, adds the deamination rate of whole device.
3rd, the condensed water that crystallizing evaporator is produced is preheated as thermal medium to high ammonia nitrogen and high salt waste water, reduces deamination The heat loss of steam carrier used by tower, improves steam thermal energy utilization rate.
4th, high ammonia nitrogen and high salt waste water is handled by the present apparatus, wastewater zero discharge can be realized, while water resource can also be realized Recycle, and can the valuable byproduct such as output ammoniacal liquor, ammonium salt.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model first embodiment;
Fig. 2 is the schematic diagram of the utility model second embodiment.
Embodiment
In order that those skilled in the art more fully understand the technical program, it is right with reference to the accompanying drawings and examples The utility model is described further.All annexations being previously mentioned in text, not single finger assembly is joined directly together, but is used Technological means in the technical field is connected, or can be more excellent to constitute by adding or reducing connection annex according to actual conditions Attachment structure.
A kind of device of processing high ammonia nitrogen and high salt waste water as depicted in figs. 1 and 2, including preheater, deammoniation tower, evaporation knot Brilliant device, vapour compression machine and centrifuge.Preheater is provided with the cold side input port for connecing high ammonia nitrogen and high salt waste water, the cold side outlet port of preheater It is connected with the waterwater entrance of deammoniation tower, the wastewater outlet of deammoniation tower and the waterwater entrance of crystallizing evaporator are connected, crystallizing evaporator Magma outlet be connected with the magma entrance of centrifuge, the mother liquor entrance connection of the mother liquor outlet of centrifuge and crystallizing evaporator, Centrifuge is exported provided with crystal salt.Wherein crystallizing evaporator is forced-circulation evaporation crystallizer, or falling film evaporator follows with pressure The combination of ring crystallizing evaporator, vapour compression machine is lobed rotor compressor, centrifugal blower or high speed centrifugation compressor;Evaporative crystallization The indirect steam outlet of device connects the carrier gas inlet of deammoniation tower and the steam inlet of vapour compression machine, the steaming of vapour compression machine respectively The heating steam inlet connection of vapor outlet and crystallizing evaporator, constitutes the function of mechanical steam recompression pipeline of crystallizing evaporator.Evaporation Crystallizer is provided with fresh steam inlet, and the condensation-water drain of crystallizing evaporator and the hot side entrance of preheater are connected.
In first embodiment as shown in Figure 1, also including absorption tower and vavuum pump.The steam inlet containing ammonia on absorption tower is with taking off The connection of steam (vapor) outlet containing ammonia of ammonia tower, the tail gas on absorption tower(Predominantly air)Outlet is connected with the entrance of vavuum pump, absorbing liquid The hot side outlet connection of entrance and preheater, absorption tower is exported provided with ammoniacal liquor, and vavuum pump is provided with offgas outlet.
The high ammonia nitrogen and high salt wastewater treatment process of the embodiment is as follows.
1. high ammonia nitrogen and high salt waste water adjusts pH value to 10 ~ 11, and the preheating of preheated device makes after condensing hot air furnace heat, from tower Jacking enters deammoniation tower, if the not preheated direct deammoniation tower of waste water, because wastewater temperature is low, and a steam carrier part for deammoniation tower is damaged Lose in improving wastewater temperature, remainder just plays stripping except ammonia is acted on, is so accomplished by substantial amounts of fresh steam, horsepower requirements Height, heat utilization rate is low, therefore with the pre- thermal wastewater of condensed water, reduces the heat loss of steam carrier used by deammoniation tower, improve Steam thermal energy utilization rate.Waste water removed in deammoniation tower and enter after most ammonia nitrogen after crystallizing evaporator, passes through evaporator Evaporation, the indirect steam of generation takes away remaining ammonia nitrogen in waste water, plays the effect of secondary deamination.Meanwhile, waste water is tied in evaporation Continuous circulating and evaporating concentration in brilliant device, salt loading crystallization separates out, then drains into centrifuge and carry out separation of solid and liquid, finally give crystallization Salt, centrifuge mother liquor returns to crystallizing evaporator and continues evaporative crystallization.
2. the indirect steam part that crystallizing evaporator is produced delivers to deammoniation tower as deamination carrier gas, the wherein part is secondary The discharge capacity of steam and the ratio of the wastewater flow of deammoniation tower are 1/5 ~ 1/15, save the fresh steam for being largely used to deamination, carry The high thermal efficiency.Indirect steam is blown into from deammoniation tower bottom of towe and directly steams the ammonia in the waste water for entering deammoniation tower, steam containing ammonia Into absorption tower condensed absorbent, tail gas is discharged through vavuum pump.Another part indirect steam of crystallizing evaporator enters both vapor compression Machine, after vapour compression machine compression heating come back to crystallizing evaporator uses as heating steam, and crystallizing evaporator is according to entering Enter the indirect steam amount of deammoniation tower, supplement fresh steam, by the coupling of deammoniation tower and crystallizing evaporator, optimize the profit of heat energy With in the case where not changing crystallizing evaporator evaporation capacity, the quantity of steam into vapour compression machine being reduced, so as to reduce pressure The treating capacity of contracting machine, saves equipment investment cost, while greatly reducing energy consumption.
3. the preheated device of high-temperature condensation water that crystallizing evaporator is produced is reclaimed with wastewater heat exchange enters absorption tower after heat, cold It is solidifying to absorb steam containing ammonia, finally give ammoniacal liquor.
In second embodiment as shown in Figure 2, also including absorption tower, vavuum pump and resin container.The steam containing ammonia on absorption tower The connection of steam (vapor) outlet containing ammonia of entrance and deammoniation tower, the offgas outlet on absorption tower and the entrance of vavuum pump are connected, and vavuum pump is provided with Offgas outlet;The condensing water inlet of resin container and the hot side outlet of preheater are connected, and resin container is provided with regenerated liquid entrance and reuse Water out, the regenerated liquid outlet of resin container is connected with the absorbing liquid entrance on absorption tower, and absorption tower is exported provided with ammonium salt.
The high ammonia nitrogen and high salt wastewater treatment process of the embodiment is as follows.
1. high ammonia nitrogen and high salt waste water adjusts pH value to 10 ~ 11, and the preheating of preheated device makes after condensing hot air furnace heat, from tower Jacking enters deammoniation tower, if the not preheated direct deammoniation tower of waste water, because wastewater temperature is low, and a steam carrier part for deammoniation tower is damaged Lose in improving wastewater temperature, remainder just plays stripping except ammonia is acted on, is so accomplished by substantial amounts of fresh steam, horsepower requirements Height, heat utilization rate is low, therefore with the pre- thermal wastewater of condensed water, reduces the heat loss of steam carrier used by deammoniation tower, improve Steam thermal energy utilization rate.Waste water removed in deammoniation tower and enter after most ammonia nitrogen after crystallizing evaporator, passes through evaporator Evaporation, the indirect steam of generation takes away remaining ammonia nitrogen in waste water, plays the effect of secondary deamination.Meanwhile, waste water is tied in evaporation Continuous circulating and evaporating concentration in brilliant device, salt loading crystallization separates out, then drains into centrifuge and carry out separation of solid and liquid, finally give crystallization Salt, centrifuge mother liquor returns to crystallizing evaporator and continues evaporative crystallization.
2. the indirect steam part that crystallizing evaporator is produced delivers to deammoniation tower as deamination carrier gas, the wherein part is secondary The discharge capacity of steam and the ratio of the wastewater flow of deammoniation tower are 1/5 ~ 1/15, save the fresh steam for being largely used to deamination, carry The high thermal efficiency.Indirect steam is blown into from deammoniation tower bottom of towe and directly steams the ammonia in the waste water for entering deammoniation tower, steam containing ammonia Into absorption tower condensed absorbent, tail gas is discharged through vavuum pump.Another part indirect steam of crystallizing evaporator enters both vapor compression Machine, after vapour compression machine compression heating come back to crystallizing evaporator uses as heating steam, and crystallizing evaporator is according to entering Enter the indirect steam amount of deammoniation tower, supplement fresh steam, by the coupling of deammoniation tower and crystallizing evaporator, optimize the profit of heat energy With in the case where not changing crystallizing evaporator evaporation capacity, the quantity of steam into vapour compression machine being reduced, so as to reduce pressure The treating capacity of contracting machine, saves equipment investment cost, while greatly reducing energy consumption.
The preheated device of high-temperature condensation water that 3.MVR crystallizing evaporators are produced is reclaimed with wastewater heat exchange enters resin container after heat Depth removes ammonia nitrogen, and finally gives recycle-water.Regenerated after resin saturation using watery hydrochloric acid or dilute sulfuric acid, regenerated liquid delivers to absorption tower It is used as absorbing liquid.Absorption tower is using resin container regenerated liquid, watery hydrochloric acid or dilute sulfuric acid as absorbing liquid, condensed absorbent steam containing ammonia, finally Obtain ammonium chloride or ammonium sulfate.
High ammonia nitrogen and high salt waste water is handled by the present apparatus, wastewater zero discharge can be realized, while returning for water resource can also be realized Receive the valuable byproducts such as utilization, and energy output ammoniacal liquor, ammonium salt.
Above example is merely to illustrate the technical solution of the utility model and unrestricted, although with reference to preferred embodiment pair The utility model is described in detail, it will be understood by those within the art that, can be to technology of the present utility model Scheme is modified or equivalent, and without departing from the objective and scope of technical solutions of the utility model, it all should cover Among right of the present utility model.

Claims (7)

1. a kind of MVR ammonia still processs integrated apparatus, it is characterised in that:Including deammoniation tower, crystallizing evaporator and vapour compression machine;It is described The indirect steam outlet of crystallizing evaporator connects the carrier gas inlet and vapour compression machine entrance of deammoniation tower respectively;The both vapor compression Machine outlet is connected with crystallizing evaporator steam inlet;The crystallizing evaporator is provided with fresh steam inlet;The deamination of the deammoniation tower The ratio of the wastewater flow of carrier gas flux and the deammoniation tower is 1/5 ~ 1/15.
2. a kind of MVR ammonia still processs integrated apparatus according to claim 1, it is characterised in that:The waste water of the deammoniation tower goes out Mouth is connected with the waterwater entrance of the crystallizing evaporator.
3. a kind of MVR ammonia still processs integrated apparatus according to claim 2, it is characterised in that:Also include centrifuge;It is described from The magma entrance of scheming is exported respectively with the magma of the crystallizing evaporator with mother liquor outlet and mother liquor entrance is connected, the centrifuge Provided with crystal salt outlet.
4. a kind of MVR ammonia still processs integrated apparatus according to claim 1 or 2 or 3, it is characterised in that:Also include preheater; The preheater is provided with the cold side input port for connecing high ammonia nitrogen and high salt waste water, the waste water of the cold side outlet port of the preheater and the deammoniation tower Entrance is connected, and hot side entrance is connected with the condensation-water drain of the crystallizing evaporator.
5. a kind of MVR ammonia still processs integrated apparatus according to claim 4, it is characterised in that:Also include absorption tower and vacuum Pump;The ammonia entrance on the absorption tower is connected with the ammonia outlet of the deammoniation tower, the offgas outlet on the absorption tower with it is described true The entrance connection of empty pump;The vavuum pump is provided with offgas outlet.
6. a kind of MVR ammonia still processs integrated apparatus according to claim 5, it is characterised in that:The absorbing liquid on the absorption tower Entrance is connected with the hot side outlet of the preheater, and the absorption tower is exported provided with ammoniacal liquor.
7. a kind of MVR ammonia still processs integrated apparatus according to claim 5, it is characterised in that:Also include resin container;The tree The condensing water inlet of fat tank is connected with the hot side outlet of the preheater, and the resin container is provided with reuse water out;The resin container Provided with regenerated liquid entrance, the regenerated liquid outlet of the resin container is connected with the absorbing liquid entrance on the absorption tower;The absorption tower is set There are absorbing liquid entrance and ammonium salt outlet.
CN201621313783.XU 2016-12-02 2016-12-02 A kind of MVR ammonia still processs integrated apparatus Active CN206337115U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109319998A (en) * 2018-10-29 2019-02-12 广州新普利节能环保科技有限公司 A kind of the near-zero release processing system and technique of ternary precursor material production waste water
PL423423A1 (en) * 2017-11-13 2019-05-20 Inst Wysokich Cisnien Polskiej Akademii Nauk Method for production of ammonia by means of a catalyst that contains aluminum nitride or other nitrides of group III metals
CN113198190A (en) * 2021-05-17 2021-08-03 辽宁麦格尼科技有限公司 Process equipment for ammonia distillation of slurry

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423423A1 (en) * 2017-11-13 2019-05-20 Inst Wysokich Cisnien Polskiej Akademii Nauk Method for production of ammonia by means of a catalyst that contains aluminum nitride or other nitrides of group III metals
CN109319998A (en) * 2018-10-29 2019-02-12 广州新普利节能环保科技有限公司 A kind of the near-zero release processing system and technique of ternary precursor material production waste water
CN113198190A (en) * 2021-05-17 2021-08-03 辽宁麦格尼科技有限公司 Process equipment for ammonia distillation of slurry

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GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: MVR ammonia evaporation integrated device

Effective date of registration: 20220311

Granted publication date: 20170718

Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch

Pledgor: GUANGZHOU SCHIN-TECH INDUSTRIAL Co.,Ltd.

Registration number: Y2022980002459

PE01 Entry into force of the registration of the contract for pledge of patent right