CN101492222A - Method for comprehensive treatment of wastewater and sludge gas utilization of cane sugar factory - Google Patents

Method for comprehensive treatment of wastewater and sludge gas utilization of cane sugar factory Download PDF

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CN101492222A
CN101492222A CNA2008101074350A CN200810107435A CN101492222A CN 101492222 A CN101492222 A CN 101492222A CN A2008101074350 A CNA2008101074350 A CN A2008101074350A CN 200810107435 A CN200810107435 A CN 200810107435A CN 101492222 A CN101492222 A CN 101492222A
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China
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water
bagasse
waste water
biogas
cane sugar
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CNA2008101074350A
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Chinese (zh)
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陈健
蓝贤州
李建元
原军
罗振坚
俸斌
宋翠红
李永红
黄坚
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广西贵糖(集团)股份有限公司
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Priority to CNA2008101074350A priority Critical patent/CN101492222A/en
Publication of CN101492222A publication Critical patent/CN101492222A/en

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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
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/584Recycling of catalysts

Abstract

The invention discloses a method for treating cane sugar factory wastewater comprehensively and using methane, which comprises the following steps: removing fibers and depositing coarse dregs in pretreated bagasse spray water, bagasse washing water, lime sludge filtered water, part of cooling water, papermaking alkaline wastewater, alkali reclaiming vaporization condensation water, and part of paper machine wastewater after reclaiming white slime of a cane sugar factory; mixing and properly heating all the water and delivering the mixture into an anaerobic reactor to perform anaerobic reaction; desulfurizing, decarburizing, purifying, filtering and compressing the obtained methane, and using the methane for heating a paper machine; and performing aerobic biochemical treatment on the sewage generated by the reaction in the anaerobic reactor so that the sewage reaches the discharge standard and is discharged, wherein sludge can be applied to preparing an organic compound fertilizer. The method can treat the sewage of the cane sugar factory comprehensively, can reclaim part of energy generated in the process of the wastewater treatment and apply the energy to production, thereby greatly reducing the production cost and bringing about better economic benefits and social benefits.

Description

The method of cane sugar factory waste water comprehensive treating process and biogas utilization
Technical field
The present invention relates to method, the particularly method of cane sugar factory sugaring and comprehensively treating waste liquid from paper-making and biogas utilization that a kind of wastewater comprehensive treatment utilizes.
Background technology
In recent years, China's sugaring and paper develop expansion year by year, for society has created abundant material wealth, but have also brought pollution to environment.Filter mud, alcohol slops, the cinder that Closed Circulation in Sugar Production is discharged, contain sulfur dioxide flue gas etc., all pollute environment.Black liquor, the stage casing alkaline waste water that paper is discharged, copy plain boiled water behind the paper etc., polluted environment equally, thereby restricted the development of producing, the a lot of people's of process effort in the past few years, pollution level has reduced many, but also has far distance apart from clean production, mainly is the waste water intractable of sugaring and papermaking, useless mash COD concentration as molasses-spirit production discharging in the cane sugar manufacture is generally 4.0~10.0 ten thousand mg/l, and the sugar refinery of day pressing 1000 tons of sugarcanes has 150 tons of useless mash every day approximately.The factory that has directly discharges; The factory that has makes the fertile agricultural of giving of liquid and uses; The factory that has adopts oxidation pond process, during rainy season, washes away with flood; Discharging again behind the factory's manufacture order cell protein that has; The factory that has adopts the large scale industry biogas engineering to handle the back discharging; The factory that has adopts and concentrates afterfire; The station-service that has dashes the discharging of ash back in boiler flue; The factory that also has adopts the multiplexing fermentation that refluxes of useless mash, handles discharging or the like afterwards.There is filter wash water distribution (about COD6000mg/L, about pH7.0) in the process of refining sugar in addition sugar refinery, and cleaning is towards floor water, cleaning of evaporator water, and cooling water etc., it is directly dischargings that there are more than 200 ton of this waste water, this part waste water, most factories in the sugar refinery of day pressing 1000 tons of sugarcanes an every day.Also have, black liquor, the stage casing alkaline waste water that paper is discharged, copy paper plain boiled water etc., the paper mill that has at present is except with the black liquor condensed combustion, copies paper plain boiled water and adopts beyond sedimentation handles, and what treatment process the stage casing alkaline waste water does not have just with other waste water dual disposal yet.So in order to reduce disposal of pollutants, at present a lot of cane sugar manufacture papermaking associating source mill are adopting many diverse ways to dispose of sewage, for example Chinese patent application number: 200320121543 disclose " upflow anaerobic sludge blanket reactor " (contriver: Meng Guangyin; The luteolin method; Meng Fancheng; Kingdom; Zheng Hua applicant: Shandong Ruixing Chemical Co. Ltd.), the separator on this upflow anaerobic sludge blanket reactor main body top is a multilayered structure, and bottom part body is the cloth water spot, and the water distributor that supplies water to the cloth water spot leads to the cloth tank that is located at the main body upper end.In the waste water treatment process based on organism such as this equipment can be used for fermenting, starch, sugaring, pharmacy, milk, papermaking.This utility model has the advantage that water distributor easily keeps unimpeded and do not need working shaft power.Another part Chinese patent: application number: 200810073578 " waste water control recycle integrated conduct method " (contrivers: yellow Shang Xun; Huang Mingke; Huang Mingzhong, applicant: disclose the method for a kind of comprehensive treating process high-concentration industrial-water and sanitary sewage Guangxi Ligui Environmental Protection Science and Technology Co., Ltd.), its processing step is: earlier waste water is carried out pre-treatment, handle through biochemical the promotion then, the anaerobic biological degraded, chemical simulation biological degradation, electrochemical treatment, again water and isolating useful matter are carried out recycle, can handle high density organic sewages such as papermaking, sugaring, alcohol, starch, monosodium glutamate, process hides with this method, and heavy metal polluted waste water, medical institutions' sewage, city domestic sewage etc.This method has little input, few occupation of land, low cost, and land seizure area and operation consume low, and clear water reaches the cleaning emission standard after handling, and can be used for agricultural irrigation, city trees and shrubs, industry washing etc.
Except adopting various physical methods, chemical process and biological method processing sugaring and papermaking, with the useful matter utilization in the waste water also is the direction that constitutes comprehensive utilization at present, for example, Chinese patent: application number: 200510094484, notification number: 100345776, denomination of invention: a kind of device for high concentration waste water treatment of highly effective methane-producing (contriver: Ruan Wenquan; Shen Xiaoyun; Yu Dan, applicant: disclose a kind of device for high concentration waste water treatment of highly effective methane-producing Southern Yangtze University), the device of the anaerobic treatment organic waste water of the full-automatic highly effective methane-producing of forming by novel expanded granular sludge bed (Expanded Granular Sludge Bed, be called for short EGSB) reactor and computer supervisory control system.It both can handle organic waste water effectively, can produce biogas efficiently again simultaneously.For the efficient processing and the biogas scale production of organic waste water provides a kind of ideal environment engineering equipment device.Chinese patent: application number: 200610069237 publication numbers: 1931749 notification numbers: 100402448, denomination of invention: (contriver: Xu's book applicant: Guihexiangxing Paper Industry Co., Ltd., Shandong) acidication-anaerobe-Anoxybiotic-aerobic biologic-BAF advanced treatment is that main technology is handled paper-making effluent to the purifying treatment method of paper-making effluent, COD more than 80% and BOD just can remove in anaerobic system, energy requirement reduces greatly, all right generate energy, the biogas that contains 50-70% methane that can utilize anaerobic process to produce is as the energy that needs usefulness in the follow-up aerobic processes.Total system running condition is stable, the processing efficiency height, and COD≤100mg/l, SS≤70mg/l fully can reuse or qualified discharge.
But how will refine sugar and the waste water of papermaking integrates and handles, and make recovery part energy in wastewater treatment process, be used for producing, rather than, remain the problem that the environmental protection scientific worker need study at present for simple processing waste water free from environmental pollution.
Summary of the invention
The purpose of this invention is to provide a kind of sugaring and the waste water of papermaking can being integrated, make it that the recovery part energy is used for production in wastewater treatment process, particularly can be used in the method for paper.
The present invention is achieved in that
Pretreated bagasse spray water with cane sugar factory, wash bagasse water, filter mud filtered water and part water coolant and papermaking alkaline waste water, the paper organic waste water that alkali reclaims behind evaporation condensed water and the partially recycled white clay is removed after fiber and the thick slag of precipitation, mixing and suitable heating are delivered to anaerobic reactor and are carried out anaerobic reaction, the biogas that obtains is through desulfurization, decarburization purifies, be used for the heating of paper machine after filtration and the compression, replace present paper machine heating and use the Sweet natural gas or the electrically heated energy, handle back up to standard discharging at the sewage that the anaerobic reactor reaction is later through aerobic biochemical, mud can be used to prepare compoiste fertilizer.
The preprocessing process of above-described bagasse spray water is to refilter with rotary sieve after the bagasse spray water is separated bagasse with mechanical barrier, and the steam heating spray water with the papermaking spraying pot is put into equalizing tank after 30-45 ℃ then.
The above-described preprocessing process of washing bagasse water is that alkali is reclaimed bagasse behind the evaporation condensed water wash press, uses grid filtration, and bagasse reclaims and is used for papermaking, and waste water is put into the merging of equalizing tank and bagasse spray water through precipitation.
The preprocessing process of above-described papermaking alkaline waste water, filter mud water and paper organic waste water is to be put into equalizing tank and bagasse spray water and to wash the bagasse hydration also after papermaking alkaline waste water, filter mud water and paper organic waste water are merged.
The anaerobic reactor of above-described anaerobic reaction adopts traditional anaerobic reactor commonly used at present, perhaps adopt the BIOPAQ-internal circulating anaerobic anaerobic reactor of Dutch Paques B. V. design, 30~45 ℃ of temperature of reaction, the sewage sludge residence time is according to the structure of reactor or the concentration decision of material.
The biogas that the present invention obtains is a kind of mixed gas, its major ingredient: contain methane (CH 4) 72~77%; Carbonic acid gas (C0 2) 22~27%; Hydrogen sulfide (H 2S) 500~1500mg/m 3Also have oxide compound, salt, derivative and some other compositions such as ammonia, nitrogen, oxygen, sulphur, alkane, acid, benzene, silicon, stink slightly, these impurity are clipped in the gas all will cause bigger influence to technology, equipment, environment in application process, so must carry out the processing of desulfurization, decarburization.
The process of above-described biogas desulfurization is that the biogas that obtains from anaerobic reactor is introduced basin and led to thionizer later on earlier, carries out desulfurization with improvement anthraquinone disulphonate method (promptly improveing the ADA method), tetramethylene sulfone doctor treatment or ferric oxide desulfurizer.
Described improvement ADA method is that diluted alkaline (sodium hydroxide) is mixed with the pH value is 8.5~9.1 improvement ADA solution (being added with the sodium metavanadate of 0.5~1g/L and the tannin extract of 0.1-0.2 in the solution), ADA content 1~2g/l, absorb the cat head spray with being pumped into, make hydrogen sulfide and sig water reaction in the mixed gas, generate Sodium sulfhydrate NaHS immediately.Hydrogen sulfide in the mixed gas is removed and enters in the absorption liquid.The Sodium sulfhydrate that absorption reaction generates immediately with mother liquor in sodium metavanadate react, generate sodium pyrovanadate, sodium hydroxide NaOH and the free sulphur S of reductibility; Like this, the hydrogen sulfide after chemical reaction in the mixed gas is separated out with regard to being converted into free sulphur, simultaneously owing to generated sodium hydroxide again in the reaction, makes absorption liquid still keep certain basicity and receptivity.
Described tetramethylene sulfone doctor treatment is to adopt the mixed aqueous solution of tetramethylene sulfone and alkyl alcoholamine as absorption agent, wherein the mass content of tetramethylene sulfone is 2-15% in the mixed aqueous solution, the mass content of alkyl alcoholamine is 30-80%, can also add the 20-50% mass content and be 1,4 morpholines, tetramethylene sulfone is a physical absorption to sulfide, and alkyl alcoholamine is a chemical absorption.The ultimate principle of this wet oxidation process desulfurization is to utilize the basic solution that contains catalyzer to absorb H 2S as oxygen carrier, makes H with catalyzer 2S is oxidized to elemental sulfur, and catalyst themselves is reduced.Bubbling air will be gone back the catalyst oxidation recovery of ortho states during regeneration, so recycle.
Described ferric oxide desulfurizer is the porous ferric oxide, and its reaction is Fe 2O 3H 2O+3H 2S → Fe 2S 3H 2O+3H 2O, principle is that the sulfocompound in the waste gas is adsorbed onto in the aperture of ferric oxide desulfurizer, thus Purge gas.After sweetening agent reaches capacity, when promptly it no longer has sweetening power, need regenerate to it, carry out steam stripping regeneration as adopting water vapor.But ferric oxide desulfurizer is after long-time the use, its active can constantly decline is stopped up by some impurity things as wherein aperture, and at this moment sweetening agent is with regard to inactivation.
The biogas that the present invention obtains is owing to contain 22~27% carbon dioxides, and colorless and odorless can water-soluble formation carbonic acid, and metal is had corrosive nature.Carbonic acid gas has the fire extinguishing fire retardation, is commonly used for fire-fighting medium.Be in the system of purpose with the burning heat release or with the work by combustion, the existence of carbonic acid gas can reduce utilization ratio, reduction flame temperature, the reduction cylinder volume utilization ratio of the combustion heat usually, causes cost increase in heat release or the work done process.Therefore in the use of this class gas, have only carbonic acid gas is dropped to lower content, just can reach requirement, improve plant efficiency, reduce use cost.So the present invention is adjusted to carbonic acid gas wherein about 5%.
Decarburization of the present invention is to carry out physical chemistry with MDEA solution (the MDEA strength of solution is 50%) in the absorption tower to absorb decarburization.Send into the absorption tower after the compressed machine pressurization of biogas after the desulfurization, contact with the lean solution that sprays into from cat head is reverse, CO 2Drop to below 3%, absorb CO 2The MDEA formula solution become rich solution and at the bottom of tower, send.Purified marsh gas enters moisture eliminator and removes moisture, obtains qualified product gas.The absorption tower is a packing tower.Moisture eliminator is two parallel connections, a dehydration, and a regeneration provides reactivation heat by electric heater.
Be rich in CO 2Rich solution need regeneration, CO 2Recycle after the desorb.Rich solution and the lean solution heat exchange that comes at the bottom of regenerator column, the back of heating up sprays into from the regenerator column top carries out desorb, with the steam flow reverse heat-exchange mass transfer that comes up at the bottom of tower, CO 2Constantly overflow from liquid phase.Saturation steam with 0.4MPa at the bottom of the tower passes through reboiler heating tower rich solution, the heat energy that provides regeneration to need.Regenerator column is a packing tower.It is higher that solution after the regeneration becomes the lean solution temperature, and sends into the top, absorption tower again with the lean pump supercharging after water cooling after the rich solution heat exchange and contact with biogas once more and absorb.The stripping gas that comes out from the regenerator column top mainly is CO 2, this gas is in the direct emptying of desorb cat head.
Before handling, through measuring, raw material biogas contains methane (CH 4) 72.4~76.58%: carbonated (C0 2) 22.92~26.88%; Sulfide hydrogen (H 2S) 510~1341mg/m 3, adopt art breading biogas of the present invention after, gas composition analysis the results are shown in following table 1:
Table 1
Project ????CO 2,% ????H 2S,mg Use the gas point pressure, Bar The dew points at normal pressure temperature, ℃
Quality index ????≤3.0 ????≤20mg/Nm 3 1.7-1.9 ??≤-5
Beneficial effect of the present invention:
1, handles wet feed preparation field bagasse spray water by bagasse spray water system for anaerobic treatment, produce a large amount of low heat values every day at 6100Kcal/Nm 3About biogas, output is at 500-1600Nm 3/ hour about, average of the whole year reaches 1100Nm 3/ hour, add the aerogenesis of other waste water of water, can also produce more biogas.
2, will wash paper organic waste water behind bagasse water, filter mud filtered water and part water coolant and papermaking alkaline waste water and the partially recycled white clay and lead to anaerobic reactor and carry out anaerobic reaction, can when handling waste water, also the organism in the waste water be changed into biogas,
3, by biogas is purified, desulfurization, decarburization, dehydration, depickling, threshing and siloxanes, oxide compound etc., the contaminative and the corrodibility that produce in the combustion processes have been eliminated, improved calorific value, gas after the processing is at main content, calorific value is not less than quality gas, and all kinds of foreign matter contents near or be better than common Sweet natural gas, can replace Sweet natural gas to be used for the hot blast gas hood of paper for daily use factory as thermal source, and as the dry page of thermal source, has very big utility value, and can reduce production costs greatly, for the production of paper for daily use brings economic benefit and social benefit.
4, after the invention process, the biogas of annual recyclable utilization reaches 7,560,000 m 3To allow this part be fully utilized on biogas paper for daily use paper machine, from energy-saving benefit, the calorific value of recovery is equivalent to the annual 7037.5 tons of standard coals of saving; From environmental benefit, after utilizing biogas to replace Sweet natural gas to be used for paper for daily use to produce, can reduce by 10500 tons of CO every year 2Discharging will be played the purpose that reduces greenhouse gas emission.Sustainable development is produced the effect of actively promoting; Also domestic sugar manufacturing industry is improved renewable resources simultaneously and utilize level, preserve the ecological environment and play the demonstration popularizing action.
Description of drawings
Fig. 1 is the process flow sheet that biogas is produced in cane sugar factory sugaring of the present invention, paper waste comprehensive treating process.
Fig. 2 is the process flow sheet of marsh gas purifying.
Embodiment
Below in conjunction with the description of drawings embodiments of the invention: implementing process of the present invention as shown in Figure 1, refilter with rotary sieve after the bagasse spray water separated bagasse with mechanical barrier, the steam heating spray water with the papermaking spraying pot is put into equalizing tank after 30-45 ℃ then; Wash bagasse water alkali is reclaimed bagasse behind the evaporation condensed water wash press, use grid filtration, bagasse reclaims and is used for papermaking, waste water is through precipitation, and be put into equalizing tank and bagasse spray water and merge: papermaking alkaline waste water, filter mud water and paper organic waste water are put into equalizing tank and bagasse spray water and wash the bagasse hydration also after merging.Mixing is delivered to internal-circulation anaerobic reactor through circulation tank and is carried out anaerobic reaction, the biogas that obtains is used for the heating of paper machine after desulfurization, decarburization, filtration and compression, replace present paper machine heating and use the Sweet natural gas or the electrically heated energy, handle back up to standard discharging at the sewage that the internal-circulation anaerobic reactor reaction is later through aerobic biochemical, mud is used to prepare compoiste fertilizer.
As shown in Figure 2, the process of marsh gas purifying is to pressurize with blower fan from the unstripped gas that internal-circulation anaerobic reactor comes out, part is delivered to boiler and is made fuel, part enters thionizer and sloughs hydrogen sulfide, be transported to the decarburization workshop with compression after filtration again, in the absorption tower, carry out physical chemistry with MDEA solution (the MDEA strength of solution is 50%) and absorb decarburization.CO 2Drop to below 3%, absorb CO 2MDEA solution become rich solution and at the bottom of tower, send.Purified marsh gas enters moisture eliminator and removes moisture, obtains qualified product gas, can deliver to paper machine room.
Be rich in CO 2Rich solution need regeneration, CO 2Recycle after the desorb.Rich solution and the lean solution heat exchange that comes at the bottom of regenerator column, the back of heating up sprays into from the regenerator column top carries out desorb, with the steam flow reverse heat-exchange mass transfer that comes up at the bottom of tower, CO 2Constantly overflow from liquid phase.Saturation steam with 0.4MPa at the bottom of the tower passes through reboiler heating tower rich solution, the heat energy that provides regeneration to need.Regenerator column is a packing tower.It is higher that solution after the regeneration becomes the lean solution temperature, and sends into the top, absorption tower again with the lean pump supercharging after water cooling after the rich solution heat exchange and contact with biogas once more and absorb.The stripping gas that comes out from the regenerator column top mainly is CO2, and this gas is in the direct emptying of desorb cat head.
After the present invention taked above-mentioned wastewater comprehensive treatment measure, exhaust gas discharged, waste water, waste residue etc. all can reach the environment protection emission standard in the production process.

Claims (6)

1, the method of a kind of cane sugar factory waste water comprehensive treating process and biogas utilization, it is characterized in that: be pretreated bagasse spray water cane sugar factory, wash bagasse water, filter mud filtered water and part water coolant and papermaking alkaline waste water, the paper organic waste water that alkali reclaims behind evaporation condensed water and the partially recycled white clay is removed after fiber and the thick slag of precipitation, mixing and suitable heating are delivered to anaerobic reactor and are carried out anaerobic reaction, the biogas that obtains is through desulfurization, decarburization purifies, be used for the heating of paper machine after filtration and the compression, handle back up to standard discharging at the sewage that the anaerobic reactor reaction is later through aerobic biochemical, mud is used to prepare compoiste fertilizer.
2, the method for cane sugar factory waste water comprehensive treating process according to claim 1 and biogas utilization, it is characterized in that: the preprocessing process of described bagasse spray water is to refilter with rotary sieve after the bagasse spray water is separated bagasse with mechanical barrier, is put into equalizing tank behind the steam heating spray water with the papermaking spraying pot then.
3, the method for cane sugar factory waste water comprehensive treating process according to claim 1 and biogas utilization, it is characterized in that: the described preprocessing process of washing bagasse water is that alkali is reclaimed bagasse behind the evaporation condensed water wash press, use grid filtration, bagasse reclaims and is used for papermaking, waste water is put into equalizing tank and bagasse spray water and merges through precipitation.
4, cane sugar factory waste water according to claim 1 is handled and the method for biogas utilization, it is characterized in that: the preprocessing process of described papermaking alkaline waste water, filter mud water and paper organic waste water is will the papermaking alkaline waste water, filter mud water and paper organic waste water are put into equalizing tank and bagasse spray water and wash the bagasse hydration also after merging.
5, the method for cane sugar factory waste water comprehensive treating process according to claim 1 and biogas utilization, it is characterized in that: the process of described biogas desulfurization is, the biogas that obtains from anaerobic reactor is introduced basin and is led to thionizer later on earlier, carries out desulfurization with improvement anthraquinone disulphonate method, tetramethylene sulfone doctor treatment or ferric oxide desulfurizer;
Described improvement ADA method is that diluted alkaline is mixed with the pH value is 8.5~9.1 improvement ADA solution, be added with the sodium metavanadate of 0.5~1g/L and the tannin extract of 0.1-0.2 in the solution, ADA content 1~2g/l, absorb the cat head spray with being pumped into, make hydrogen sulfide and sig water reaction in the mixed gas, generate Sodium sulfhydrate NaHS, hydrogen sulfide in the mixed gas is removed and enters in the absorption liquid, the Sodium sulfhydrate that absorption reaction generates immediately with mother liquor in sodium metavanadate react, generate sodium pyrovanadate, sodium hydroxide NaOH and the free sulphur of reductibility;
Described tetramethylene sulfone doctor treatment is to adopt the mixed aqueous solution of tetramethylene sulfone and alkyl alcoholamine as absorption agent, wherein the mass content of tetramethylene sulfone is 2-15% in the mixed aqueous solution, the mass content of alkyl alcoholamine is 30-80%, perhaps add the 20-50% mass content and be 1,4 morpholines, bubbling air will be gone back the catalyst oxidation recovery of ortho states during regeneration, so recycle;
Described ferric oxide desulfurizer is the porous ferric oxide.
6, the method for cane sugar factory waste water comprehensive treating process according to claim 1 and biogas utilization, it is characterized in that: described decarburization is to be that 50%MDEA solution carries out physical chemistry and absorbs decarburization in the absorption tower with concentration, send into the absorption tower after the compressed machine pressurization of biogas after the desulfurization, contact with the lean solution that sprays into from cat head is reverse, absorb CO 2MDEA solution become rich solution and at the bottom of tower, send, purified marsh gas enters moisture eliminator and removes moisture, obtains qualified product gas; Be rich in CO 2Rich solution and the lean solution heat exchange that comes at the bottom of the regenerator column, the intensification back sprays into from the regenerator column top carries out desorb, with the steam flow reverse heat-exchange mass transfer that at the bottom of tower, comes up, pass through reboiler heating tower rich solution with saturation steam at the bottom of the tower, sending into the top, absorption tower again with the lean pump supercharging after water cooling after solution after the regeneration and the rich solution heat exchange contacts with biogas once more and absorbs the CO that comes out from the regenerator column top 2In the direct emptying of desorb cat head.
CNA2008101074350A 2008-12-30 2008-12-30 Method for comprehensive treatment of wastewater and sludge gas utilization of cane sugar factory CN101492222A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102533369A (en) * 2012-01-13 2012-07-04 北京昊海天际科技有限公司 Process method for methane purification
CN102873079A (en) * 2012-10-04 2013-01-16 桂林理工大学 Method for removing sulfate radical in molasses alcohol wastewater by using bagasse ash
CN103572798A (en) * 2013-11-20 2014-02-12 广西大学 Method for segmented processing and gradient utilization of waste water in cane sugar factory
CN103739145A (en) * 2013-11-15 2014-04-23 安徽省绿巨人环境技术有限公司 High fructose syrup production wastewater treatment technology
CN103789351A (en) * 2014-01-14 2014-05-14 中国科学院广州能源研究所 Method for producing biogas by taking molasses as substrate
CN104193070A (en) * 2014-09-26 2014-12-10 李仕全 Effluent treatment device for sugarcane factory
CN104498119A (en) * 2014-12-08 2015-04-08 柳州东侯生物能源科技有限公司 Biogas purifying method
CN106277565A (en) * 2016-08-08 2017-01-04 江苏蓝兴化工环保股份有限公司 The processing means of a kind of sucralose waste water and using method
WO2020258581A1 (en) * 2019-06-28 2020-12-30 南京盛滨环境研究院有限公司 Method for treating molasses wastewater with bacteria

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102533369A (en) * 2012-01-13 2012-07-04 北京昊海天际科技有限公司 Process method for methane purification
CN102873079A (en) * 2012-10-04 2013-01-16 桂林理工大学 Method for removing sulfate radical in molasses alcohol wastewater by using bagasse ash
CN102873079B (en) * 2012-10-04 2014-07-30 桂林理工大学 Method for removing sulfate radical in molasses alcohol wastewater by using bagasse ash
CN103739145A (en) * 2013-11-15 2014-04-23 安徽省绿巨人环境技术有限公司 High fructose syrup production wastewater treatment technology
CN103572798A (en) * 2013-11-20 2014-02-12 广西大学 Method for segmented processing and gradient utilization of waste water in cane sugar factory
CN103789351A (en) * 2014-01-14 2014-05-14 中国科学院广州能源研究所 Method for producing biogas by taking molasses as substrate
CN103789351B (en) * 2014-01-14 2016-04-20 中国科学院广州能源研究所 A kind of method taking molasses as substrate and produce biological flue gas
CN104193070A (en) * 2014-09-26 2014-12-10 李仕全 Effluent treatment device for sugarcane factory
CN104193070B (en) * 2014-09-26 2015-10-28 李仕全 A kind of liquid waste treating apparatus of cane sugar factory
CN104498119A (en) * 2014-12-08 2015-04-08 柳州东侯生物能源科技有限公司 Biogas purifying method
CN106277565A (en) * 2016-08-08 2017-01-04 江苏蓝兴化工环保股份有限公司 The processing means of a kind of sucralose waste water and using method
CN106277565B (en) * 2016-08-08 2020-02-14 江苏蓝必盛化工环保股份有限公司 Sucralose wastewater treatment device and use method
WO2020258581A1 (en) * 2019-06-28 2020-12-30 南京盛滨环境研究院有限公司 Method for treating molasses wastewater with bacteria

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