CN104341019B - A kind of energy-efficient coupling stripping rectifying deamination and desulfurization new technology - Google Patents
A kind of energy-efficient coupling stripping rectifying deamination and desulfurization new technology Download PDFInfo
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- CN104341019B CN104341019B CN201310323512.7A CN201310323512A CN104341019B CN 104341019 B CN104341019 B CN 104341019B CN 201310323512 A CN201310323512 A CN 201310323512A CN 104341019 B CN104341019 B CN 104341019B
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- ammonia
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- steam
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/16—Hydrogen sulfides
- C01B17/168—Purification
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to the process of a kind of industrial wastewater reduction of discharging and recycling, specifically relate to and a kind of adopt vapor recycle High efficiency stripping deamination and rectifying desulfurization coupling technique to process to contain ammonia sulfur-containing waste water, and the ammonia nitrogen in waste water and hydrogen sulfide are carried out to the method for recycling. Technique provided by the invention will reach country-level ammonia nitrogen discharge standard after the wastewater treatment containing ammonia nitrogen 500-15000mg/L and sulfide hydrogen 100～8000mg/L, sulfide content is down to below 20mg/L, and the ammonia in waste water and sulphur content are not recycled with the form of highly purified ammonium sulfate and hydrogen sulfide. Adopt this PROCESS FOR TREATMENT to contain ammonia sulfur-containing waste water steam consumption quantity lower than 100kg steam/ton waste water, good energy-conserving effect.
Description
Technical field
The present invention relates to a kind of method of industrial wastewater reduction of discharging and recycling, specifically relate to a kind of vapor recycle High efficiency stripping deamination and desulfurization technique and rectifying sulfur removal technology coupling processing of adopting and give up sulphur waste water containing ammonia, and the ammonia nitrogen in waste water and hydrogen sulfide are carried out to the method for recycling.
Background technology
In the industry production such as Coal Chemical Industry and petrochemical industry process, can produce a large amount of hydrogen sulfide containing ammonia nitrogen waste waters, if it is not carried out to processing meeting, environment be caused to very big harm. The external high concentration of processing adopts vaporizing extract process containing the sewage of ammonia more at present, as US Patent No. 3335071 and US3404072, and domesticly have the single tower stripping lateral line withdrawal function technical finesse sulfur-bearing of employing house ammonia sewage, as ZL97115113.X, its common feature be consume energy higher, process waste water per ton and need 140～180 kilograms of left and right of steam, and ammonia nitrogen process range is narrower, water outlet ammonia nitrogen concentration does not reach national grade one discharge standard (GB8978-1996 " integrated wastewater discharge standard " regulation primary standard ammonia nitrogen is less than 15mg/L). For the waste water containing ammonia sulfur-bearing, the efficient energy-saving coupling stripping deamination sulfur removal technology that this patent adopts and the coupling of hydrogen sulfide rectification process, good energy-conserving effect, can reach good deamination and desulfurization effect, and recyclable highly purified ammonium sulfate is as nitrogenous fertilizer, and highly purified hydrogen sulfide is used for sulphur processed.
This patent, based on efficient energy-saving coupling stripping deamination technology ZL201010507488.9, further improves on its basis and gives up sulphur waste water for the treatment of what produce in Coal Chemical Industry and oil refinery's industry containing ammonia, reaches the object of energy-saving and emission-reduction and recycling.
Summary of the invention
The present invention relates to a kind of method of industrial wastewater reduction of discharging and recycling, specifically relate to a kind of vapor recycle High efficiency stripping deamination and desulfurization technique and rectifying sulfur removal technology coupling processing sulfur-bearing ammonia nitrogen waste water of adopting, and the ammonia nitrogen in waste water and hydrogen sulfide are carried out to the method for recycling.
Process chart and equipment
Process chart of the present invention is shown in Figure of description 1.
Main technique equipment:
Complex acid tank, sulfuric acid pump, sulfuric acid circulating pump, deamination and desulfurization pond, waste water pump, inlet outlet heat exchanger, stripping deamination and desulfurization tower, vapor recycle machine, ammonia absorption tower, ammonium sulfate evaporimeter, hydrogen sulfide rectifying column and overhead condenser.
Process implementing step
The present invention adopts above-mentioned process equipment to processing containing ammonia sulfur-containing waste water, and to the ammonia in waste water and hydrogen sulfide recycling, the processing step of enforcement comprises:
Need giving up after sulphur waste water is heated up by inlet outlet heat exchanger by waste water pump after adjusting pH value and input in stripping deamination and desulfurization tower containing ammonia of processing, carry out the transmission of heat/matter with the live steam of input at the bottom of tower and the sulfur-bearing steam looping back. Ammonia and hydrogen sulfide in waste water enter vapor phase, and waste water by entering deamination and desulfurization cistern at the bottom of tower after inlet outlet heat exchanger cooling, is for further processing as required after desulfurization deamination.
In stripping deamination and desulfurization tower, the steam of sulfide hydrogen and ammonia is sent into ammonia absorption tower through vapor recycle machine, contacts with the dilute sulfuric acid of circulated sprinkling, and the ammonia in steam is absorbed and generates ammonium sulfate by dilute sulfuric acid. The ammonium sulfate generating is through evaporator evaporation crystallization extraction, and the indirect steam producing in evaporimeter is transferred back vapor recycle machine and recycles. The sulfur-bearing steam of taking off ammonia in ammonia absorption tower is divided into two-way, and respectively by valve controlling flow amount: a road is delivered to stripping deamination and desulfurization tower and recycles, a road is delivered to hydrogen sulfide rectifying column and carries out rectification and purification hydrogen sulfide gas.
Enter the sulfur-bearing steam of hydrogen sulfide rectifying column by the cool condenser fractional condensation of tower top, the high-purity hydrogen sulfide gas of discharge can be delivered to sulfur recovery workshop section and process. The sulfur-bearing steam condensate (SC) backflow rectifying column that condensation is got off in overhead condenser, and be delivered to stripping deamination and desulfurization tower and process.
In above-mentioned process, can carry out reasonable disposition with on-the-spot space and the industrial actual needs of enforcement according to entire system is energy-optimised, and process containing ammonia sulfur-containing waste water treating capacity according to actual, and in waste water, the height of ammonia-nitrogen content and hydrogen sulfide content is determined stripping deamination and desulfurization tower, ammonia absorption tower and the required instrument size of hydrogen sulfide rectifying column, vapor recycle acc power and steam consumption.
Effect of the present invention:
(1) can process ammonia-nitrogen content in waste water: 500～15000mg/L;
(2) after processing, in waste discharge, ammonia-nitrogen content is low: 1～10mg/L (lower than national grade one discharge standard 15mg/L);
(3) can process the hydrogen sulfide content in waste water: 100～8000mg/L;
(4) process the hydrogen sulfide content in rear waste discharge: be less than 20mg/L;
(5) steam consumption quantity: be less than 100kg/ ton waste water;
(6) reclaim product: high-purity sulfuric acid ammonium and high-purity hydrogen sulfide.
Concrete case study on implementation
Below enumerating embodiment further illustrates embodiment of the present invention. But the present invention is not limited to following embodiment.
Embodiment 1
Adopt the present invention to process containing ammonia sulfur-containing waste water import ammonia nitrogen concentration 1800mg/L, sulfide concentration 800mg/L, treating capacity is 30m3/ h. Adopt the analyses of this color method of nessler reagent (GB7479-87) and methylene blue AAS (GB/T16489-1996), the ammonia nitrogen concentration in processed waste water is 3.7mg/L, and hydrogen sulfide content is 8mg/L. Steam consumption is 87kg/ ton waste water.
Embodiment 2
Adopt the present invention to process containing ammonia sulfur-containing waste water import ammonia nitrogen concentration 4100mg/L, sulfide concentration 6500mg/L, treating capacity is 80m3/ h. Adopt the analyses of this color method of nessler reagent (GB7479-87) and methylene blue AAS (GB/T16489-1996), the ammonia nitrogen concentration in processed waste water is 5.0mg/L, and hydrogen sulfide content is 15mg/L. Steam consumption is 75kg/ ton waste water.
Embodiment 3
Adopt the present invention to process containing ammonia sulfur-containing waste water import ammonia nitrogen concentration 14300mg/L, sulfide concentration 1500mg/L, treating capacity is 50m3/ h. Adopt the analyses of this color method of nessler reagent (GB7479-87) and methylene blue AAS (GB/T16489-1996), the ammonia nitrogen concentration in processed waste water is 6.5mg/L, and hydrogen sulfide content is 13mg/L. Steam consumption is 70kg/ ton waste water.
Brief description of the drawings
Fig. 1 is process flow diagram of the present invention.
Claims (1)
1. one kind for the treatment of containing the energy-efficient coupling stripping rectifying deamination and desulfurization technique side of ammonia sulfur-containing waste waterMethod, its feature is to adopt following equipment and technological operation step:
Equipment comprises: complex acid tank, sulfuric acid pump, sulfuric acid circulating pump, deamination and desulfurization pond, waste water pump, turnoverMouth heat exchanger, stripping deamination and desulfurization tower, vapor recycle machine, ammonia absorption tower, ammonium sulfate evaporimeter, sulfurationHydrogen rectifying column and overhead condenser;
In the time utilizing above-mentioned equipment to process containing ammonia sulfur-containing waste water, adopt following technological operation stepRapid:
Need to process heated up by inlet outlet heat exchanger by waste water pump after adjusting pH value containing ammonia sulfur-containing waste water afterIn input stripping deamination and desulfurization tower, with the live steam of input at the bottom of tower and the sulfur-bearing steam that loops back carry out heat/Matter is transmitted; Ammonia and hydrogen sulfide in waste water enter vapor phase, waste water after desulfurization deamination by the bottom of tower through turnoverAfter the cooling of mouth heat exchanger, enter deamination and desulfurization cistern, be for further processing as required;
In stripping deamination and desulfurization tower, the steam of sulfide hydrogen and ammonia is sent into ammonia absorption through vapor recycle machineTower, contacts with the dilute sulfuric acid of circulated sprinkling, and the ammonia in steam is absorbed and generates ammonium sulfate by dilute sulfuric acid; RawThe ammonium sulfate becoming is through evaporator evaporation crystallization extraction, and the indirect steam producing in evaporimeter is transferred back steam and followsRing machine recycles; The sulfur-bearing steam of taking off ammonia in ammonia absorption tower is divided into two-way, respectively by valve controlFlow a: road is delivered to stripping deamination and desulfurization tower and recycles, a road is delivered to hydrogen sulfide rectifying column and carries out essenceHeat up in a steamer purification hydrogen sulfide gas;
Enter the sulfur-bearing steam of hydrogen sulfide rectifying column by overhead condenser fractional condensation, the high-purity hydrogen sulfide of dischargeGas is delivered to sulfur recovery workshop section and is processed; The sulfur-bearing steam condensate (SC) backflow rectifying that in overhead condenser, condensation is got offTower, and be delivered to stripping deamination and desulfurization tower and process.
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| CN201310323512.7A CN104341019B (en) | 2013-07-30 | 2013-07-30 | A kind of energy-efficient coupling stripping rectifying deamination and desulfurization new technology |
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| CN201310323512.7A CN104341019B (en) | 2013-07-30 | 2013-07-30 | A kind of energy-efficient coupling stripping rectifying deamination and desulfurization new technology |
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| CN104341019B true CN104341019B (en) | 2016-05-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773781B (en) * | 2015-03-23 | 2016-09-14 | 北京阳光欣禾科技有限公司 | A kind of energy-conservation stripping deamination process |
| CN106348374B (en) * | 2016-08-31 | 2023-09-26 | 河北源清环保科技有限公司 | Deamination treatment method and treatment device for wastewater |
| CN106277455B (en) * | 2016-08-31 | 2023-09-26 | 河北源清环保科技有限公司 | Desulfurization and deamination treatment method and treatment device for wastewater generated in oil refining hydrogenation process |
| CN106277459A (en) * | 2016-08-31 | 2017-01-04 | 河北源清环保科技有限公司 | Desulfuration processing method and processing means to waste water |
| NL2020788B1 (en) | 2017-04-21 | 2019-06-26 | China Petroleum & Chem Corp | Apparatus and Method for Treating Waste Water Containing Ammonium Salts |
| CN107487802B (en) * | 2017-09-07 | 2021-04-02 | 北京赛科康仑环保科技有限公司 | Resourceful treatment method for high-ammonia-nitrogen high-salt wastewater |
| CN108128829A (en) * | 2018-02-11 | 2018-06-08 | 南京英斯派工程技术有限公司 | Taurine waste water zero discharge treatment process and taurine wastewater zero discharge processing unit |
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| CN101522288A (en) * | 2006-07-31 | 2009-09-02 | 纳幕尔杜邦公司 | Process for scrubbing ammonia from acid gases comprising ammonia and hydrogen sulfide |
| CN102030386A (en) * | 2010-10-15 | 2011-04-27 | 北京化工大学 | Efficient energy-saving coupling stripping deamination equipment and method |
| JP2012214594A (en) * | 2011-03-31 | 2012-11-08 | Jgc Corp | Gas treatment method, and gas treatment apparatus |
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Patent Citations (4)
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| JPS5879519A (en) * | 1981-10-21 | 1983-05-13 | リンデ・アクチエンゲゼルシヤフト | Method and apparatus for adjusting nh3 content in washed gas |
| CN101522288A (en) * | 2006-07-31 | 2009-09-02 | 纳幕尔杜邦公司 | Process for scrubbing ammonia from acid gases comprising ammonia and hydrogen sulfide |
| CN102030386A (en) * | 2010-10-15 | 2011-04-27 | 北京化工大学 | Efficient energy-saving coupling stripping deamination equipment and method |
| JP2012214594A (en) * | 2011-03-31 | 2012-11-08 | Jgc Corp | Gas treatment method, and gas treatment apparatus |
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