CN104085936B - The energy-efficient deamination system of a kind of embedded double-current matter - Google Patents
The energy-efficient deamination system of a kind of embedded double-current matter Download PDFInfo
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- CN104085936B CN104085936B CN201410241518.4A CN201410241518A CN104085936B CN 104085936 B CN104085936 B CN 104085936B CN 201410241518 A CN201410241518 A CN 201410241518A CN 104085936 B CN104085936 B CN 104085936B
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- ammonia nitrogen
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The energy-efficient deamination system of a kind of embedded double-current matter, belongs to technical field of sewage. Equipment mainly comprises lifting and circulating pump, heat exchanger, plug-flow booster fan, the energy-efficient deammoniation tower of embedded double-current matter. In flow process, ammonia nitrogen waste water enters tower body after heat exchange, by plug-flow pressurised steam and live steam stripping deamination; Be recycled ammonium sulfate and circulation dilute sulfuric acid is absorbed as ammonium sulfate containing ammonia steam, the steam plug-flow supercharging tower reactor after purification recycles simultaneously. The invention provides a kind of efficiency high, steam consumption quantity is low, takes up an area little ammonia nitrogen sewage treatment equipment and the technique in space.
Description
Technical field
The present invention relates to industrial wastewater separation equipment and make field, specifically relate to the PROCESS FOR TREATMENT technology by adopting a vapor tower plug-flow supercharging and embedded double-current matter, reach processing to ammonia nitrogen waste water and resource and carry out simultaneously and utilize the system of cycling hot.
Background technology
Ammonia and nitrogen pollution is mainly in the time that in water body, ammonia nitrogen concentration increases, and can cause water eutrophication, makes organism in water raised growth. When after these biological deaths, in microorganism decomposable process in water, consumed a large amount of oxygen, thereby made water body severe depletion of oxygen, caused organism in water mortality, thereby corrupt water quality makes again microorganism amount reproduction cause water body muddiness, stench, severe contamination water body. Externally announce along with " national environmental protection " 12 " planning " is formal. " planning " proposes, China " 12 " major pollutants reduce discharging target: by 2015, COD total emission volumn will reduce by 8% than 2010, and ammonia nitrogen total emission volumn reduces by 10%, sulfur dioxide (SO2) emissions total amount reduces by 8%, and discharged nitrous oxides total amount reduces by 10%. Wherein ammonia nitrogen is as " 12 " environmental protection leading indicator, and the total emission volumn of 2015 will decline 10% from 264.4 ten thousand tons in 2010, reaches the target of 238.0 ten thousand tons. Ammonia nitrogen has exceeded COD becomes the leading indicator that affects water quality. Can produce a large amount of ammonia nitrogen waste waters in industries such as chemical fertilizer, agricultural chemicals, blowing agent, catalyst and textile printing and dyeings. These enterprises are being faced with unprecedented reduction of discharging pressure.
The various technology processes of ammonia nitrogen waste water processing both at home and abroad, have advantage and deficiency separately, due to the difference on different wastewater properties, also do not have a kind of general method can process all ammonia nitrogen waste waters. Therefore, must be for the wastewater property of different industrial process, and the contained composition of waste water gos deep into systematic research, selects and definite treatment technology and technique. At present, biological denitrificaion method is mainly used in the processing containing organic low ammonia nitrogen concentration wastewater from chemical industry and sanitary sewage, and this law technology is reliable, and treatment effect is good. Mainly adopt blow-off method or steam stripping method for middle and high concentration ammonia nitrogen wastewater, blow-off method is that waste water is adjusted to alkalescence, then in stripper, pass into air or steam, by gas-liquid contact by the free ammonia stripping in waste water to atmosphere or steam, make ammonia nitrogen transfer to meteorology from liquid phase. Pass into steam, the wastewater temperature that can raise, thus improve when certain pH value by the ratio of the ammonia of stripping. While processing ammonia by this method, need the free ammonia total amount of considering discharge should meet the atmospheric emission standard of ammonia, in order to avoid cause secondary pollution. Low concentration wastewater is used air stripping conventionally at normal temperatures, make steel, the high-concentration waste water of the industry such as petrochemical industry, chemical fertilizer, organic chemical industry's non-ferrous metal metallurgy conventional steam carry out stripping. But existing stripping process but exists that a lot of weak points are as large in occupation area of equipment and energy consumption is very high, particularly outstanding aspect steam mono-consumption especially, cause ammonia nitrogen waste water processing cost very high, cause enterprise to be reluctant or unablely bear its disposal cost.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of floor space little, structural manufacturing process is simple, realizes the energy-efficient deamination system of embedded double-current matter of resource recycling.
For realizing the object of the invention, provide following technical scheme: the energy-efficient deamination system of a kind of embedded double-current matter, comprise plate type heat exchanger, interior stream tower, ammonium sulfate tank and dilute sulfuric acid tank, described interior stream tower comprises tower body, in tower body, be arranged at intervals with S type composite screen hole column plate and flow plug, in tower body, be divided into waste steam deamination section and ammonium sulfate circulation absorber portion, the nearly bottom of described waste steam deamination section is separately provided with raw steam and enters pipeline, ammonia nitrogen waste water pipeline connects waste steam deamination section middle part, interior Liu Ta bottom tower reactor is provided with deamination waste pipe, described ammonia nitrogen waste water pipeline, deamination waste pipe all passes through plate type heat exchanger, described ammonia nitrogen waste water pipeline, deamination waste pipe is provided with suction pump, described ammonium sulfate tank, dilute sulfuric acid tank all arranges circulating line and connects interior stream tower, circulating line feed tube is all arranged at ammonium sulfate circulation absorber portion, on described circulating line, be provided with circulating pump.
As preferably, ammonium sulfate circulation absorber portion top is provided with supercharging circulation pipe road and connects the nearly bottom of waste steam deamination section, and described supercharging circulation pipe road is provided with booster fan.
As preferably, dilute sulfuric acid tank circulating line feed tube is separately provided with pipeline and connects ammonium sulfate tank.
Below introduce operation principle of the present invention: first, by waste water lifting pump by ammonia nitrogen waste water after plate type heat exchanger heat exchange, enter Nei Liuta waste steam deamination section after making ammonia nitrogen waste water be preheated to design temperature; Secondly, waste water enters behind tower inside, pass through the S type composite screen hole column plate of the patented technology of " a kind of S type high-efficiency guide composite screen hole column plate " from top to bottom, carry out mass exchange by the live steam and the cyclic steam counter current contacting that rise at the bottom of tower, ammonia in waste water enters gas phase by liquid phase, is efficiently separated. Waste water after deamination goes out water pump by tower reactor and discharges after the former ammonia nitrogen waste water heat exchange of plate type heat exchanger and elevator pump; The ammonia steam that contains of waste steam deamination section passes through spiral board ammonium sulfate circulation absorber portion, the patented technology column plate that simultaneously passes through " a kind of S type high-efficiency guide composite screen hole column plate " is first absorbed by acid ammonium sulfate circulation, then a small amount of residual ammonia steam that contains is absorbed by dilute sulfuric acid circulation, and the steam after purification is sent Nei Liuta tower reactor back to by plug-flow booster fan and recycled. The acid ammonium sulfate circulation absorbing ammonia of ammonium sulfate circulation absorber portion produces ammonium sulfate, by ammonium sulfate circulating pump, the ammonium sulfate part in ammonium sulfate tank is proceeded to circulation and absorbs, another part shunting output; Dilute sulfuric acid circulation absorbs the ammonia in residual steam, by dilute sulfuric acid circulating pump, the dilute sulfuric acid part in dilute sulfuric acid tank is ensured to the cleanliness factor of steam, and another part passes through pH in ammonium sulfate circulation accurately to control a point inflow ammonium sulfate tank. In above-mentioned process, carry out reasonable disposition according to entire system is energy-optimised with the on-the-spot industrial actual demand of space of enforcement, and according to height size, dilute sulfuric acid and ammonium sulfate internal circulating load etc. of how many definite steam consumption quantities of ammonia-nitrogen content in actual treatment ammonia nitrogen waste water, the equipment column plate number of plies.
Beneficial effect of the present invention: the present invention is reduced to minimum limit by processing ammonia nitrogen waste water steam consumption, the actual steam consuming is only for supplementing a small amount of heat of taking out of in the heat exchange of deamination water and ammonium sulfate circulation, and system radiating loss. In addition, this technique is ensureing under the prerequisite of ammonia nitrogen removal frank, and the heat that utilizes the chemical reaction of ammonia and sulfuric acid to discharge, by being used after plug-flow supercharging, reaches the object of saving live steam. Conventional ammonia absorption plant is carried out to complementary design simultaneously, accurately control acid and add mode and dosage, rational deployment gas-liquid contact mass transfer parts, save the low problem of absorber portion device processes ability. Finally " a kind of S type high-efficiency guide composite screen hole column plate " patented technology is combined with the PROCESS FOR TREATMENT technology of a vapor tower plug-flow supercharging and embedded double-current matter and reaches every section of tower diameter of appropriate design layout and height, solve the problem that occupation area of equipment is large and greatly reduce wastewater treatment expense.
Brief description of the drawings
Fig. 1 is the structural representation of system of the present invention.
Detailed description of the invention
The energy-efficient deamination system of a kind of embedded double-current matter, comprise plate type heat exchanger 001, interior stream tower 002, ammonium sulfate tank 003 and dilute sulfuric acid tank 004, described interior stream tower 002 comprises tower body, in tower body, be arranged at intervals with S type composite screen hole column plate 021 and flow plug 022, in tower body, be divided into waste steam deamination section 023 and ammonium sulfate circulation absorber portion 024, the nearly bottom of described waste steam deamination section 023 is separately provided with raw steam and enters pipeline 005, ammonia nitrogen waste water pipeline 006 connects waste steam deamination section 023 middle part, interior Liu Ta bottom tower reactor is provided with deamination waste pipe 007, described ammonia nitrogen waste water pipeline 006, deamination waste pipe 007 is all by plate type heat exchanger 001, described ammonia nitrogen waste water pipeline 006, deamination waste pipe 007 is provided with suction pump 008, described ammonium sulfate tank 003, dilute sulfuric acid tank 004 all arranges circulating line 009 and connects interior stream tower 002, circulating line 009 feed tube 091 is all arranged at ammonium sulfate circulation absorber portion 024, on described circulating line 009, be provided with circulating pump 092. ammonium sulfate circulation absorber portion 024 top is provided with supercharging circulation pipe road 010 and connects the nearly bottom of waste steam deamination section 023, and described supercharging circulation pipe road 010 is provided with booster fan 011. dilute sulfuric acid tank 004 circulating line feed tube 091 is separately provided with pipeline 092 and connects ammonium sulfate tank 003.
Embodiment 1
Adopt the present invention to process ammonia nitrogen waste water import ammonia nitrogen concentration 3500mg/L, treating capacity 5t/h. Adopt nessler reagent colorimetric method (GB7479-87) methods analyst, the ammonia nitrogen concentration in processed waste water is 12mg/L. Steam consumption is 35kg/t.
Claims (1)
1. the energy-efficient deamination system of embedded double-current matter, comprise plate type heat exchanger, interior stream tower, ammonium sulfate tank and dilute sulfuric acid tank, described interior stream tower comprises tower body, in tower body, be arranged at intervals with S type composite screen hole column plate and flow plug, in tower body, be divided into waste steam deamination section and ammonium sulfate circulation absorber portion, the nearly bottom of described waste steam deamination section is separately provided with raw steam and enters pipeline, ammonia nitrogen waste water pipeline connects waste steam deamination section middle part, interior Liu Ta bottom tower reactor is provided with deamination waste pipe, described ammonia nitrogen waste water pipeline, deamination waste pipe all passes through plate type heat exchanger, described ammonia nitrogen waste water pipeline, deamination waste pipe is provided with suction pump, described ammonium sulfate tank, dilute sulfuric acid tank all arranges circulating line and connects interior stream tower, circulating line feed tube is all arranged at ammonium sulfate circulation absorber portion, on described circulating line, be provided with circulating pump, ammonium sulfate circulation absorber portion top is provided with supercharging circulation pipe road and connects the nearly bottom of waste steam deamination section, described supercharging circulation pipe road is provided with booster fan, dilute sulfuric acid tank circulating line feed tube is separately provided with pipeline and connects ammonium sulfate tank.
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| CN201410241518.4A CN104085936B (en) | 2014-06-03 | 2014-06-03 | The energy-efficient deamination system of a kind of embedded double-current matter |
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| CN201410241518.4A CN104085936B (en) | 2014-06-03 | 2014-06-03 | The energy-efficient deamination system of a kind of embedded double-current matter |
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| CN104085936B true CN104085936B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL2020788B1 (en) | 2017-04-21 | 2019-06-26 | China Petroleum & Chem Corp | Apparatus and Method for Treating Waste Water Containing Ammonium Salts |
| CN110282800A (en) * | 2019-06-20 | 2019-09-27 | 四川省兴威钒业有限公司 | Vanadium extracting waste water ammonia nitrogen resource utilization technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030386A (en) * | 2010-10-15 | 2011-04-27 | 北京化工大学 | Efficient energy-saving coupling stripping deamination equipment and method |
| CN102190341A (en) * | 2010-03-09 | 2011-09-21 | 天华化工机械及自动化研究设计院 | Stripping ammonia-removing method based on flash evaporation and heat pump technologies |
| CN103752252A (en) * | 2013-12-18 | 2014-04-30 | 江苏华杉环保科技有限公司 | S-shaped high efficiency oriented composite sieve tray |
| CN203866060U (en) * | 2014-06-03 | 2014-10-08 | 江苏华杉环保科技有限公司 | Embedded type double-fluid high-efficiency and energy-saving deamination system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5505935B2 (en) * | 2010-11-02 | 2014-05-28 | 三菱化工機株式会社 | Waste water treatment apparatus and treatment method containing ammonia nitrogen |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190341A (en) * | 2010-03-09 | 2011-09-21 | 天华化工机械及自动化研究设计院 | Stripping ammonia-removing method based on flash evaporation and heat pump technologies |
| CN102030386A (en) * | 2010-10-15 | 2011-04-27 | 北京化工大学 | Efficient energy-saving coupling stripping deamination equipment and method |
| CN103752252A (en) * | 2013-12-18 | 2014-04-30 | 江苏华杉环保科技有限公司 | S-shaped high efficiency oriented composite sieve tray |
| CN203866060U (en) * | 2014-06-03 | 2014-10-08 | 江苏华杉环保科技有限公司 | Embedded type double-fluid high-efficiency and energy-saving deamination system |
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