CN106966766A - A kind of method that hydrothermal carbonization processing bean dregs black mud prepares fertilizer - Google Patents
A kind of method that hydrothermal carbonization processing bean dregs black mud prepares fertilizer Download PDFInfo
- Publication number
- CN106966766A CN106966766A CN201710216125.1A CN201710216125A CN106966766A CN 106966766 A CN106966766 A CN 106966766A CN 201710216125 A CN201710216125 A CN 201710216125A CN 106966766 A CN106966766 A CN 106966766A
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- CN
- China
- Prior art keywords
- hydrothermal carbonization
- bean dregs
- sulfuric acid
- black mud
- concentrated sulfuric
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/006—Waste from chemical processing of material, e.g. diestillation, roasting, cooking
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Botany (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides the method that a kind of hydrothermal carbonization processing bean dregs black mud prepares fertilizer, it is characterised in that adds two kinds of acid catalysts in two steps, i.e. add acetic acid before entering the reactor, carries out partway adding the concentrated sulfuric acid into reactor in reaction.
Description
Technical field
The present invention relates to soybean protein production and pollutant process field, there is provided a kind of hydrothermal carbonization processing bean dregs are black
The method of clay standby fertilizer.
Background technology
Soybean protein generally refers to the protein from soybean, and its amino acid composition is close with milk, solid without courage
Alcohol, and containing peculiar active components such as isoflavones, with higher nutritive value.Because soybean protein has above advantage, plus
Its preparing raw material it is with low cost be easy to get, technology of preparing is relatively easy, and it is rapid that domestic soybean protein prepares industry development, cut-off
The nearly various schools of thinkers of domestic large-scale soybean protein manufacturing enterprise in 2015, medium-sized and small enterprises are more.
The basic process of current domestic enterprise's soybean protein production is：Low-temp extraction-alkali soluble-acid is heavy-centrifugation-spray drying
Or ferment treatment, a large amount of bean dregs (about 5 tons of bean dregs of albumen per ton) can be wherein produced after alkali soluble, a large amount of waste water can be produced after the heavy centrifugation of acid
(albumen per ton about 20 tons of high COD, BOD waste water).If can not properly dispose, severe contamination problem can be caused, and if
It is also a kind of very big wasting of resources rich in albumen, the bean dregs of cellulose and waste water that these, which can not be made full use of,.
At present, the main whereabouts of bean dregs is feed producer, and waste water is mainly handled through sewage plant.Because bean dregs moisture content is high,
Corruption is easy to, directly uses or processes as feed and be inconvenient, therefore many times bean dregs can be directly as Fertilizer application
Even abandon.The sludge produced by the wastewater sedimentation of soybean protein, i.e. bean dregs black mud are produced, compost, landfill, which all exist, to be accounted for
Ground is big, the problems such as pollution.Produced in soybean protein production process waste integrated treatment and using distance " minimizing, it is innoxious,
The perfect condition of stabilisation, recycling " also has very big gap.
The content of the invention
Applicant is introducing Germany Buttmann hydrothermal carbonization treatment technology building equipments, actual motion processing urban life
Further optimization has been carried out on the basis of sewage plant sludge (ground such as Beijing, Yanzhou, Jining) to hydrothermal carbonization handling process simultaneously
Attempt to extend its scope of application.In experiment, it has been found that hydrothermal carbonization technology can be completely used for processing bean dregs and bean dregs are black
Mud, can effectively reduce both moisture content and improve its nutrient composition.By existing hydrothermal carbonization catalyst type and addition
Mode (disposable before entering the reactor to add the concentrated sulfuric acid) is changed to substep addition twice and (adds vinegar before entering the reactor
Acid, carries out partway adding the concentrated sulfuric acid into reactor in reaction), it can preferably improve product moisture content and preferably be subtracted with realizing
Amount/preservation effect, and improve albumen/effective nitrogen and phosphorus content.
Heretofore described " bean dregs black mud " refers to that the waste water produced in soybean protein production process precipitates generation
Sludge.
On the one hand there is provided the method that a kind of hydrothermal carbonization processing bean dregs black mud prepares fertilizer, including step：
A. bean dregs black mud is collected；
B. bean dregs black mud is delivered into reactor, during which adds acetic acid；
C. hydrothermal carbonization reaction is carried out in the reactor, during which adds the concentrated sulfuric acid；
D. the biological carbon slurry of generation is collected；
E. after plate press-dehydrating, crush, pack is used as fertilizer finished product.
The concentrated sulfuric acid used in further aspect, this method is 98% concentrated sulfuric acid, and acetic acid is glacial acetic acid.
The concentrated sulfuric acid addition used in further aspect, this method is 0.5-1% (v/v), and acetic acid addition is 1-
2% (v/v).
The concentrated sulfuric acid addition used in further aspect, this method is 0.5% (v/v), and acetic acid addition is 1.5%
(v/v)。
Further aspect, hydrothermal carbonization temperature is 150-200 DEG C, and pressure is 15-30bar, and the time is 60-150 minutes.
Further aspect, hydrothermal carbonization temperature is 150 DEG C, and pressure is 20bar, and the time is 120 minutes.
Further aspect, hydrothermal carbonization adds the concentrated sulfuric acid when proceeding to anticipation reaction time a quarter.
Collect what is produced under conditions of safeguards system operating pressure by pressure relief system in further method, step d
Biological carbon is starched, and during which receives the heat that biological carbon is starched by heat-exchange system, and obtaining heat is used to exist by preceding heat-exchange system
Black mud is preheated in step b, carbon slurry stays overbottom pressure to deliver to buffer reservoir after being depressured by depressurized system.
Pressure in further aspect, reactor is provided by sludge pump.
Brief description of the drawings
Accompanying drawing 1 is the complete process flow block diagram of sludge hot water carbonization treatment technology.In figure：1st, loading hopper, 2, sludge
Force (forcing) pump, 3, front heat exchanger system, 4, recuperation of heat, 5,1# catalyst toss areas, 6, reactor, 7, rear heat exchange system,
8th, depressurized system, 9, carbon slurry warehouse, 10, frame dehydration device, 11, wastewater treatment (options), 12,1# catalyst add pump,
13rd, 2# catalyst adds pump, and 14, charcoal heat-conducting oil furnace, 15, filtrate tanks, 16, sludge storage bin, A, the beans of moisture content 85%
Slag black mud, B, sediment feedback (optional), water returns to factory's water inlet, D, charcoal cake after C, processing.
Accompanying drawing 2 is the equipment appearance figure (3000 tons year disposal ability) that applicant's actual treatment bean dregs are used.
Embodiment
The processing of the bean dregs black mud of embodiment 1
Bean dregs black mud samples sources：Shandong Xing Yu soybean biologicals Co., Ltd produces waste water through precipitation gained black mud, aqueous
Rate about 85%.
The processing procedure of the present invention：
A. bean dregs black mud is collected using enclosing coil；
B. bean dregs black mud is delivered into reactor, during which adds glacial acetic acid 1.5% (v/v) and heat-exchange system preheating in the past is black
Mud；
C. hydrothermal carbonization reaction is carried out in the reactor, and hydrothermal carbonization temperature is 150 DEG C, and pressure is 20bar, and the time is
120 minutes, the pressure that reaction is added in 98% concentrated sulfuric acid 0.5% (v/v), reactor when proceeding to about 30 minutes was carried by sludge pump
For；
D. the biological carbon for generation being collected under conditions of safeguards system operating pressure by pressure relief system is starched, during which by rear
Heat-exchange system cools and reclaims heat；
E. plate press-dehydrating obtains charcoal cake.
Control treatment process 1：
Basic process wherein being added without acid catalyst, and adjusts hydrothermal carbonization temperature with the processing procedure of the present invention
To 200 DEG C, pressure to 30bar, the time was to 150 minutes.
Control treatment process 2：
Basic process is with processing procedure of the invention, wherein only adding the conduct of 98% concentrated sulfuric acid 1.5% in stepb
A kind of single catalyst.
Control treatment process 3：
Basic process is with processing procedure of the invention, wherein only adding the conduct of 98% concentrated sulfuric acid 1.5% in stepb
A kind of single catalyst, and hydrothermal carbonization temperature is adjusted to 200 DEG C, pressure to 30bar, the time was to 150 minutes.
Control treatment process 4
Basic process is with processing procedure of the invention, wherein 98% concentrated sulfuric acid 1% is added in stepb, in step c
It 30 minutes is to add 80% concentrated nitric acid that reaction, which proceeds to, as catalyst,
Above-mentioned processing procedure uses identical equipment, (1.5 tons) progress of identical black mud sample size.
The effect of each processing method compares in the embodiment 1 of embodiment 2
Determine gained charcoal cake moisture content, effective nitrogen content (alkali diffusion method), available phosphorus content (molybdenum antimony resistance colorimetric method)
As a result show, compared to existing hydrothermal carbonization method, it is aqueous that method of the invention can more effectively reduce black mud
Rate is preferably to realize mud decrement, while extending the holding time (data are shown in embodiment 3)；Shortening the reaction time, (effect is better than
Reaction time longer control 1 and 3)；Available nitrogen and phosphorus content is effectively increased in product to realize more preferable effect of fertilizer (i.e.
Make the difference of exclusion moisture content, the available nitrogen and phosphorus content of the inventive method product are also apparently higher than control, and this is probably by dividing
The more preferable broken wall decomposable process that step adds two kinds of acid generations causes)；Contrast with compareing 4 can be seen that for bean dregs raw material, adopt
The mode effect for strengthening acid with weak acid is even better than pure strong acid (aqueous low, nitrogenous height, phosphorous lower slightly).The method of the present invention is being built
Make and have no significant difference in operating cost with existing hydrothermal carbonization treatment technology (sour species increases but cumulative volume is constant).
The actual fertilizer of embodiment 3 is prepared and used
The charcoal cake moisture content that plate press-dehydrating is obtained is low, is adapted to storage/compost of transport certain time.Raw sewage air storage
Will be fermented generation extremely niff for 3 days or so, and operating personnel do not do protection and are difficult to approach, and treated charcoal cake reveals
It is stacked 30 also produces without obvious stink.
In radish potted plant experiment, charcoal cake prepared by the inventive method will be used as organic fertilizer with dry ground weight in embodiment 1
When 1.5% amount is applied, radish growth situation (speed of growth and under ground portion size) is substantially better than group of not applying fertilizer.
Claims (9)
1. a kind of method that hydrothermal carbonization processing bean dregs black mud prepares fertilizer, including step：
A. bean dregs black mud is collected；
B. bean dregs black mud is delivered into reactor, during which adds acetic acid；
C. hydrothermal carbonization reaction is carried out in the reactor, during which adds the concentrated sulfuric acid；
D. the biological carbon slurry of generation is collected；
E. after plate press-dehydrating, crush, pack is used as fertilizer finished product.
2. the method described in claim 1, wherein the concentrated sulfuric acid used is 98% concentrated sulfuric acid, acetic acid is glacial acetic acid.
3. the method described in claim 2, wherein the concentrated sulfuric acid addition used is 0.5-1% (v/v), acetic acid addition is 1-
2% (v/v).
4. the method described in claim 3, wherein the concentrated sulfuric acid addition used is 0.5% (v/v), acetic acid addition is
1.5% (v/v).
5. any one of claim 1-4 method, wherein hydrothermal carbonization temperature are 150-200 DEG C, pressure is 15-30bar, time
For 60-150 minutes.
6. the method described in claim 5, wherein hydrothermal carbonization temperature are 150 DEG C, pressure is 20bar, and the time is 120 minutes.
7. any one of claim 1-6 method, wherein hydrothermal carbonization add dense when proceeding to anticipation reaction time a quarter
Sulfuric acid.
8. in any one of claim 1-7 method, wherein step d by pressure relief system safeguards system operating pressure condition
It is lower to collect the biological carbon slurry produced, the heat that biological carbon is starched during which is received by heat-exchange system, obtaining heat is used for before passing through
Heat-exchange system preheats black mud in stepb, and carbon slurry stays overbottom pressure to deliver to buffer reservoir after being depressured by depressurized system.
9. the pressure in any one of claim 1-8 method, wherein reactor is provided by sludge pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710216125.1A CN106966766B (en) | 2017-04-05 | 2017-04-05 | Method for preparing fertilizer by treating bean dreg black mud through hydrothermal carbonization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710216125.1A CN106966766B (en) | 2017-04-05 | 2017-04-05 | Method for preparing fertilizer by treating bean dreg black mud through hydrothermal carbonization |
Publications (2)
| Publication Number | Publication Date |
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| CN106966766A true CN106966766A (en) | 2017-07-21 |
| CN106966766B CN106966766B (en) | 2021-03-26 |
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| CN201710216125.1A Active CN106966766B (en) | 2017-04-05 | 2017-04-05 | Method for preparing fertilizer by treating bean dreg black mud through hydrothermal carbonization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786916A (en) * | 2018-05-24 | 2018-11-13 | 上海大学 | Sludge carbon-based solid acid and the preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008167748A (en) * | 2006-12-15 | 2008-07-24 | Toyohashi Univ Of Technology | Method for producing liquid feed for animal by using high-temperature high-pressure water |
| CN103755124A (en) * | 2014-01-23 | 2014-04-30 | 杭州互惠环保科技有限公司 | Sludge treatment method based on hydrothermal carbonization |
| CN104843667A (en) * | 2015-04-02 | 2015-08-19 | 苏州大学 | Method for preparing electrode carbon material of sodium ion battery by using bean dregs |
| CN105579404A (en) * | 2013-07-18 | 2016-05-11 | 得利满公司 | Optimised hydrothermal carbonisation method and facility for implementing same |
-
2017
- 2017-04-05 CN CN201710216125.1A patent/CN106966766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008167748A (en) * | 2006-12-15 | 2008-07-24 | Toyohashi Univ Of Technology | Method for producing liquid feed for animal by using high-temperature high-pressure water |
| CN105579404A (en) * | 2013-07-18 | 2016-05-11 | 得利满公司 | Optimised hydrothermal carbonisation method and facility for implementing same |
| CN103755124A (en) * | 2014-01-23 | 2014-04-30 | 杭州互惠环保科技有限公司 | Sludge treatment method based on hydrothermal carbonization |
| CN104843667A (en) * | 2015-04-02 | 2015-08-19 | 苏州大学 | Method for preparing electrode carbon material of sodium ion battery by using bean dregs |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786916A (en) * | 2018-05-24 | 2018-11-13 | 上海大学 | Sludge carbon-based solid acid and the preparation method and application thereof |
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| CN106966766B (en) | 2021-03-26 |
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Address after: Room A207, 2 / F, building 10, 17 houyongkang Hutong, Dongcheng District, Beijing, 100007 Applicant after: BEIJING SHUNHONG JINJIAN ENVIRONMENT TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 100102 Beijing city Chaoyang District Wangjing Petrova building A block 1708 Applicant before: BEIJING SHUNHONG JINJIAN ENVIRONMENT TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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