CN102658282A - Method for quickly hydrolyzing organic waste - Google Patents
Method for quickly hydrolyzing organic waste Download PDFInfo
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- CN102658282A CN102658282A CN2012101321049A CN201210132104A CN102658282A CN 102658282 A CN102658282 A CN 102658282A CN 2012101321049 A CN2012101321049 A CN 2012101321049A CN 201210132104 A CN201210132104 A CN 201210132104A CN 102658282 A CN102658282 A CN 102658282A
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Abstract
The invention relates to a method for quickly hydrolyzing organic waste. The organic waste is fed into a catalytic hydrolysis reaction kettle through a mixer, and is subjected to continuously cycled catalytic hydrolysis reaction under the catalysis of an acid catalyst until the organic waste is completely reacted; and hydrolyzed materials can be used for fertilizer preparation, inorganic matters are used as building materials or buried, and organic matters are crushed, return to the catalytic hydrolysis reaction kettle and are hydrolyzed again. By the method, the organic waste can be quickly hydrolyzed, a great number of pathogenic microorganisms are killed, and organic nitrogen (N) and phosphorus pollutants and substances generating foul smell are eliminated. The method is an innocent treatment method capable of reducing environmental pollution.
Description
Technical field
The present invention relates to a kind of method of quick hydrolysis process organic materials discarded object.
Background technology
The organic materials discarded object generally is meant organic solid castoffs such as domestic waste organic moiety, urban life excess sludge, rubbish from cooking, feces of livestock and poultry, straw from village, food processing discarded object; These organic materials discarded objects contain a large amount of pathogenic microorganisms usually; Organic N, P pollutant; And can produce odorant, serious environment pollution, its harmless treatment become China's sustainable development the great environmental problem that can't avoid.Though China has has made and issued a series of rules, standards such as " decontamination of human excreta sanitary standard ", " the agricultural control criterion of townm refuse ", " pollutant control criterion in the agricultural mud "; But also exist various defectives, incompatibility China's national situation, operability relatively poor, can't satisfy the needs of these organic materials discarded object environmental managements far away.
At present, the processing method about the organic materials discarded object mainly contains three types both at home and abroad: sanitary landfill method, composting process and burning method, and its pluses and minuses are narrated respectively as follows:
Sanitary landfill method: saying in a sense, is traditional twentieth century method for innocent treatment, and its feature is that processing method is simple, but waste land resource, the bad processing of rubbish effusion, COD concentration is high, exists secondary pollution; Processing cost is also very high.
Composting process: the composting time is long, needs 1～2 month even the longer time.Long because of fermentation time, organic matter and nitrogen are supported part a large amount of losses, also exist serious stench, severe contamination atmosphere, and residual a large amount of germ, virus, because the mosquitos and flies insect can be carried a large amount of germs, virus, it is popular to be prone to produce communicable diseases.Compost is used as soil conditioner usually both at home and abroad.Therefore, compost just dissolving property is found a way out, can not commercialization.
Burning method: processing cost is high, has serious secondary pollution, especially dioxin contamination, and waste resource.
The patent No. is to propose among the CN1727085A in the Cleansed handling domestic garbage, with the method deodorization and sterilization that adopts deodorant and microwave sterilization, though; Can play certain effect, but its process will originally can be oversimplified the complex disposal process processing, obviously increase the processing cost of organic materials discarded object; Increased business burden, this method treatment scale is little in addition, and equipment manufacturing cost and processing cost are very high; Its product is difficult to find market, is a kind of technology that is difficult to promote.
The present invention is exactly the very strong technical method of practicality of developing the quick hydrolysis process of a kind of organic materials discarded object to the problem that exists at present domestic and international all methods.The present invention is exactly through with comprehensive methods such as physics, chemistry and biologies; With the quick hydrolysis process of organic materials discarded object; In the environment of ecological circulation, rapidly, effectively, harmlessly decompose it; To reach the purpose of " minimizing ", " stabilization ", " hygienization ", " resource recoveryization ", reach the optimal unified purpose of economic benefit and environmental benefit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of quick hydrolysis process organic materials discarded object.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of method of quick hydrolysis process organic materials discarded object may further comprise the steps:
1) the organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer;
2) make superheated steam get into the catalytic hydrolysis reaction still, import acidic catalyst simultaneously, the catalytic hydrolysis reaction that circulates continuously is to reacting completely;
3) open tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier; When limewash concentration reaches 8%～13%, add lime and generate calcium acetate; With the calcium acetate thickening, subsequent use, the moisture discharging;
4) when exhaust emissions pressure reaches 0.3～0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging;
5) material in the screening machine screening blow pit, the calcium acetate of screenings and step 3) preparation merges composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the discarded object of organic materials described in the step 1) is meant organic moiety, urban life excess sludge, rubbish from cooking, feces of livestock and poultry, straw from village, the food processing discarded object of domestic waste.
Further, the inlet amount of the discarded object of organic materials described in the step 1) is 70～90% of a catalytic hydrolysis reaction still capacity, is preferably 80%.
Further, the temperature of superheated steam step 2) is 110～200 ℃.
Further, catalyst step 2) is a sulfuric acid;
Further, step 2) catalyst amount is 1.5～3.5% of an organic materials discarded object inlet amount described in, and the catalytic hydrolysis reaction time is 0.5～4 hour.
Further, step 2) during catalytic hydrolysis reaction, the pressure in the catalytic hydrolysis reaction still is 0.3～1.5MPa in.
Further, the order number of screening machine described in the step 5) is 12～20 orders, is preferably 12 orders.
Further, inorganic matter described in the step 5) refers to sandstone, glass, pottery, and said organic matter refers to bulk materials.
The invention has the beneficial effects as follows: the organic materials discarded object is killed and is wherein contained a large amount of pathogenic microorganisms through the quick hydrolysis process of the present invention, eliminates organic N, P pollutant; And the material that produces stench, the method for the harmless treatment of minimizing contaminated environment, simultaneously; The present invention's ratio related process in the past can obtain the hydrolysis effect of higher organic materials, through the quick hydrolytic process with organic materials, makes the big molecular organic molecule of difficult degradation become the little molecular organic molecule that is prone to degraded; Make it to have good biological effectiveness; Become the best base-material of organic fertilizer, turn waste into wealth, reach resource, commercial processing intent.
Description of drawings
Fig. 1 is the quick hydrolysis process process chart of organic materials discarded object of the present invention;
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Embodiment 1
The organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer; Inlet amount is 70% of a catalytic hydrolysis reaction still capacity; 150 ℃ of superheated steams get into the catalytic hydrolysis reaction still, import sulfuric acid simultaneously, and consumption is 2% of an organic materials discarded object inlet amount; Pressure in the catalyzing hydrolysis 4 hours, catalytic hydrolysis reaction still is 1.5MPa; Open the tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier, when limewash concentration reaches 10%, adds lime and generates calcium acetate, and is with the calcium acetate thickening, subsequent use; When exhaust emissions pressure reaches 0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging; Material in the 12 purpose screening machines screening blow pit, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
Embodiment 2
The organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer; Inlet amount is 90% of a catalytic hydrolysis reaction still capacity; 110 ℃ of superheated steams get into the catalytic hydrolysis reaction still, import sulfuric acid simultaneously, and consumption is 1.5% of an organic materials discarded object inlet amount; Pressure in the catalyzing hydrolysis 2 hours, catalytic hydrolysis reaction still is 0.3MPa; Open the tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier, when limewash concentration reaches 8%, adds lime and generates calcium acetate, and is with the calcium acetate thickening, subsequent use; When exhaust emissions pressure reaches 0.3MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging; Material in the 16 purpose screening machines screening blow pit, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
Embodiment 3
The organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer; Inlet amount is 80% of a catalytic hydrolysis reaction still capacity; 110 ℃ of superheated steams get into the catalytic hydrolysis reaction still, import sulfuric acid simultaneously, and consumption is 1.5% of an organic materials discarded object inlet amount; Pressure in the catalyzing hydrolysis 0.5 hour, catalytic hydrolysis reaction still is 1MPa; Open the tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier, when limewash concentration reaches 13%, adds lime and generates calcium acetate, and is with the calcium acetate thickening, subsequent use; When exhaust emissions pressure reaches 0.3MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging; Material in the 12 purpose screening machines screening blow pit, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
Embodiment 4
The organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer; Inlet amount is 90% of a catalytic hydrolysis reaction still capacity; 200 ℃ of superheated steams get into the catalytic hydrolysis reaction still, import sulfuric acid simultaneously, and consumption is 3.5% of an organic materials discarded object inlet amount; Pressure in the catalyzing hydrolysis 2 hours, catalytic hydrolysis reaction still is 0.3MPa; Open the tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier, when limewash concentration reaches 8%, adds lime and generates calcium acetate, and is with the calcium acetate thickening, subsequent use; When exhaust emissions pressure reaches 0.5MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging; Material in the 20 purpose screening machines screening blow pit, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a quick hydrolysis process organic materials discarded object may further comprise the steps:
1) the organic materials discarded object is sent the catalytic hydrolysis reaction still to through batch mixer;
2) make superheated steam get into the catalytic hydrolysis reaction still, import acidic catalyst simultaneously, the catalytic hydrolysis reaction that circulates continuously is to reacting completely;
3) open tail gas discharging pipe on the agitated reactor, slowly release of pressure venting absorbs little acetic acid in the tail gas with limewash behind the tail gas recycle heat earlier; When limewash concentration reaches 8%～13%, add lime and generate calcium acetate; With the calcium acetate thickening, subsequent use, the moisture discharging;
4) when exhaust emissions pressure reaches 0.3～0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, spray is quick-fried to blow pit fast to make material after the hydrolysis, and moisture breaks away from material, filters out micro mist in the moisture, the moisture discharging;
5) material in the screening machine screening blow pit, the calcium acetate of screenings and step 3) preparation merges composting, and oversize further screens, and the inorganic matter that filters out is done building materials or landfill disposal, and the organic matter that filters out returns the hydrolysis again of catalytic hydrolysis reaction still after pulverizing.
2. the method for quick hydrolysis process organic materials discarded object according to claim 1; It is characterized in that the discarded object of organic materials described in the step 1) is meant organic moiety, urban life excess sludge, rubbish from cooking, feces of livestock and poultry, straw from village, the food processing discarded object of domestic waste.
3. the method for quick hydrolysis process organic materials discarded object according to claim 1 is characterized in that, the inlet amount of the discarded object of organic materials described in the step 1) is 70～90% of a catalytic hydrolysis reaction still capacity.
4. the method for quick hydrolysis process organic materials discarded object according to claim 3 is characterized in that, the inlet amount of the discarded object of organic materials described in the step 1) is 80% of a catalytic hydrolysis reaction still capacity.
5. the method for quick hydrolysis process organic materials discarded object according to claim 1 is characterized in that step 2) described in the temperature of superheated steam be 110～200 ℃.
6. the method for quick hydrolysis process organic materials discarded object according to claim 1; It is characterized in that; Step 2) catalyst described in is a sulfuric acid, and said catalyst consumption is 1.5～3.5% of an organic materials discarded object inlet amount, and the catalytic hydrolysis reaction time is 0.5～4 hour.
7. the method for quick hydrolysis process organic materials discarded object according to claim 1 is characterized in that step 2) in during catalytic hydrolysis reaction, the pressure in the catalytic hydrolysis reaction still is 0.3～1.5MPa.
8. the method for quick hydrolysis process organic materials discarded object according to claim 1 is characterized in that, the order number of screening machine described in the step 5) is 12～20 orders.
9. the method for quick hydrolysis process organic materials discarded object according to claim 8 is characterized in that, the order number of screening machine described in the step 5) is 12 orders.
10. the method for quick hydrolysis process organic materials discarded object according to claim 1 is characterized in that inorganic matter described in the step 5) refers to sandstone, glass, pottery, and said organic matter refers to bulk materials.
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| CN201210132104.9A CN102658282B (en) | 2012-04-28 | 2012-04-28 | Method for quickly hydrolyzing organic waste |
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| CN201210132104.9A CN102658282B (en) | 2012-04-28 | 2012-04-28 | Method for quickly hydrolyzing organic waste |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421596A (en) * | 2013-08-08 | 2013-12-04 | 安徽金寨祥堡生态农业科技开发有限公司 | Harmless treatment method for livestock, poultry and aquatic products dead of diseases and double-wall boiler |
| CN109180226A (en) * | 2018-10-19 | 2019-01-11 | 杨霆 | A kind of dry cleaning up excrement just hydrolyzes decomposed production organic fertilizer technique and device |
| CN114682610A (en) * | 2022-03-09 | 2022-07-01 | 金锋馥(滁州)科技股份有限公司 | Deodorization method based on comprehensive organic waste subcritical hydrolysis treatment |
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| CN1274824A (en) * | 2000-06-20 | 2000-11-29 | 华东理工大学 | Incineration-catalytic hydrolysis combined fast city refuse treating process |
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| CN101804414A (en) * | 2009-02-13 | 2010-08-18 | 叶毅 | Method and processing system for comprehensively recycling municipal solid wastes |
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2012
- 2012-04-28 CN CN201210132104.9A patent/CN102658282B/en not_active Expired - Fee Related
Patent Citations (7)
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|---|---|---|---|---|
| CN1274824A (en) * | 2000-06-20 | 2000-11-29 | 华东理工大学 | Incineration-catalytic hydrolysis combined fast city refuse treating process |
| CN1583299A (en) * | 2003-08-18 | 2005-02-23 | 新昌县华源环保科技有限公司 | Life refuse treating process |
| CN1923383A (en) * | 2006-09-21 | 2007-03-07 | 环大环保科技（上海）有限公司 | High pressure steam catalysis hydrolysis process for treating domestic refuse |
| CN101481189A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Integrated process of furfural production as well as wastewater, waste slag and waste gas treatment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421596A (en) * | 2013-08-08 | 2013-12-04 | 安徽金寨祥堡生态农业科技开发有限公司 | Harmless treatment method for livestock, poultry and aquatic products dead of diseases and double-wall boiler |
| CN109180226A (en) * | 2018-10-19 | 2019-01-11 | 杨霆 | A kind of dry cleaning up excrement just hydrolyzes decomposed production organic fertilizer technique and device |
| CN114682610A (en) * | 2022-03-09 | 2022-07-01 | 金锋馥(滁州)科技股份有限公司 | Deodorization method based on comprehensive organic waste subcritical hydrolysis treatment |
| CN114682610B (en) * | 2022-03-09 | 2023-08-15 | 金锋馥(滁州)科技股份有限公司 | Deodorization method based on subcritical hydrolysis treatment of comprehensive organic waste |
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