CN102658282B - Method for quickly hydrolyzing organic waste - Google Patents
Method for quickly hydrolyzing organic waste Download PDFInfo
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- CN102658282B CN102658282B CN201210132104.9A CN201210132104A CN102658282B CN 102658282 B CN102658282 B CN 102658282B CN 201210132104 A CN201210132104 A CN 201210132104A CN 102658282 B CN102658282 B CN 102658282B
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- discarded object
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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 fast hydrolyzing and process the method for organic materials discarded object.
Background technology
Organic materials discarded object generally refers to the 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 conventionally, organic N, P pollutant, and can produce odorant, serious environment pollution, its harmless treatment has become the great environmental problem that China's sustainable development cannot be avoided.Although China has has made and issued a series of regulations, the standards such as " decontamination of human excreta sanitary standard ", " the agricultural control criterion of townm refuse ", " pollutant control criterion in agricultural mud ", but also there are various defects, be not suitable with China's national situation, operability is poor, cannot meet the needs of these organic materials discarded object environmental managements far away.
At present, both at home and abroad about the processing method of organic materials discarded object mainly contains three types: sanitary landfill method, composting process and burning method, its pluses and minuses are described below respectively:
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 garbage leaching liquid, 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 for more time.Long because of fermentation time, organic matter and nitrogen nutrient are lost in a large number, also exist serious stench, and severe contamination atmosphere, and residual a large amount of germ, virus, because mosquitos and flies insect can be carried a large amount of germs, virus, easily produce communicable diseases popular.Compost is used as soil conditioner conventionally both at home and abroad.Therefore, compost just dissolving property is found a way out, can not commercialization.
, there is serious secondary pollution in burning method: processing cost is high, especially dioxin contamination, and waste resource.
The patent No. is to propose in Cleansed handling domestic garbage in CN1727085A, the method deodorization and sterilization of deodorant and microwave sterilization will be adopted, although, can play certain effect, its process will originally can be simplified complex disposal process processing, obviously increase the processing cost of organic materials discarded object, increased business burden, the 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 popularization.
The present invention develops the very strong technical method of practicality of a kind of organic materials discarded object fast hydrolyzing processing for the problem existing in current domestic and international all methods.The present invention is exactly by by physics, chemistry and the comprehensive method such as biological, by the processing of organic materials discarded object fast hydrolyzing, in the environment of ecological circulation, rapidly, effectively, harmlessly decompose it, to reach the object of " minimizing ", " stabilization ", " hygienization ", " resource recoveryization ", reach the optimal unified object of economic benefit and environmental benefit.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of fast hydrolyzing processing organic materials discarded object.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of fast hydrolyzing is processed the method for organic materials discarded object, comprises the following steps:
1) organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer;
2) make superheated steam enter catalytic hydrolysis reaction still, input acidic catalyst simultaneously, carry out continuous circulation catalytic hydrolysis reaction, to reacting completely;
3) open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, in the time that reaching 8%～13%, limewash concentration add lime to generate calcium acetate, by calcium acetate thickening, for subsequent use, moisture discharge;
4) in the time that exhaust emissions pressure reaches 0.3～0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge;
5) material in screening machine screening blow pit, screenings and step 3) calcium acetate prepared merges composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
On the basis of technique scheme, the present invention can also do following improvement.
Further, step 1) described in organic materials discarded object refer to 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, step 1) described in the inlet amount of organic materials discarded object be 70～90% of catalytic hydrolysis reaction still capacity, be preferably 80%.
Further, step 2) described in the temperature of superheated steam be 110～200 DEG C.
Further, step 2) described in catalyst be sulfuric acid;
Further, step 2) described in catalyst amount be 1.5～3.5% of organic materials discarded object inlet amount, the catalytic hydrolysis reaction time is 0.5～4 hour.
Further, step 2) in when catalytic hydrolysis reaction, the pressure in catalytic hydrolysis reaction still is 0.3～1.5MPa.
Further, step 5) described in the order number of screening machine be 12～20 orders, be preferably 12 orders.
Further, step 5) described in inorganic matter refer to sandstone, glass, pottery, described organic matter refers to bulk materials.
The invention has the beneficial effects as follows: organic materials discarded object is by fast hydrolyzing processing of the present invention, kill and wherein contain a large amount of pathogenic microorganisms, eliminate organic N, P pollutant, and the material of generation stench, reduce the method for the harmless treatment of contaminated environment, simultaneously, the present invention can obtain the hydrolysis effect of higher organic materials than related process in the past, by by the fast hydrolyzing process of organic materials, make the large molecule organic molecule of difficult degradation become the little molecule organic molecule of easy degraded, make it to there is good biological effectiveness, become the best base-material of organic fertilizer, turn waste into wealth, reach resource, commercial processing intent.
Brief description of the drawings
Fig. 1 is organic materials discarded object fast hydrolyzing processing technological flow figure of the present invention;
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
Organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer, inlet amount is 70% of catalytic hydrolysis reaction still capacity, 150 DEG C of superheated steams enter catalytic hydrolysis reaction still, input sulfuric acid simultaneously, consumption is 2% of organic materials discarded object inlet amount, catalyzing hydrolysis 4 hours, the pressure in catalytic hydrolysis reaction still is 1.5MPa; Open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, adds lime to generate calcium acetate in the time that limewash concentration reaches 10%, by calcium acetate thickening, for subsequent use; In the time that exhaust emissions pressure reaches 0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge; Material in 12 object screening machine screening blow pits, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, and the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
Embodiment 2
Organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer, inlet amount is 90% of catalytic hydrolysis reaction still capacity, 110 DEG C of superheated steams enter catalytic hydrolysis reaction still, input sulfuric acid simultaneously, consumption is 1.5% of organic materials discarded object inlet amount, catalyzing hydrolysis 2 hours, the pressure in catalytic hydrolysis reaction still is 0.3MPa; Open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, adds lime to generate calcium acetate in the time that limewash concentration reaches 8%, by calcium acetate thickening, for subsequent use; In the time that exhaust emissions pressure reaches 0.3MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge; Material in 16 object screening machine screening blow pits, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, and the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
Embodiment 3
Organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer, inlet amount is 80% of catalytic hydrolysis reaction still capacity, 110 DEG C of superheated steams enter catalytic hydrolysis reaction still, input sulfuric acid simultaneously, consumption is 1.5% of organic materials discarded object inlet amount, catalyzing hydrolysis 0.5 hour, the pressure in catalytic hydrolysis reaction still is 1MPa; Open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, adds lime to generate calcium acetate in the time that limewash concentration reaches 13%, by calcium acetate thickening, for subsequent use; In the time that exhaust emissions pressure reaches 0.3MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge; Material in 12 object screening machine screening blow pits, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, and the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
Embodiment 4
Organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer, inlet amount is 90% of catalytic hydrolysis reaction still capacity, 200 DEG C of superheated steams enter catalytic hydrolysis reaction still, input sulfuric acid simultaneously, consumption is 3.5% of organic materials discarded object inlet amount, catalyzing hydrolysis 2 hours, the pressure in catalytic hydrolysis reaction still is 0.3MPa; Open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, adds lime to generate calcium acetate in the time that limewash concentration reaches 8%, by calcium acetate thickening, for subsequent use; In the time that exhaust emissions pressure reaches 0.5MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge; Material in 20 object screening machine screening blow pits, screenings and calcium acetate merge composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, and the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. fast hydrolyzing is processed a method for organic materials discarded object, comprises the following steps:
1) organic materials discarded object is sent catalytic hydrolysis reaction still to through batch mixer, and described organic materials discarded object refers to 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;
2) make superheated steam enter catalytic hydrolysis reaction still, pressure in catalytic hydrolysis reaction still is 0.3～1.5MPa, inputs acidic catalyst sulfuric acid simultaneously, and consumption is 1.5～3.5% of organic materials discarded object inlet amount, carry out continuous circulation catalytic hydrolysis reaction 0.5～4 hour, to reacting completely;
3) open the tail gas discharging pipe on reactor, first slowly release of pressure venting, absorbs a small amount of acetic acid in tail gas with limewash after tail gas recycle heat, in the time that reaching 8%～13%, limewash concentration add lime to generate calcium acetate, by calcium acetate thickening, for subsequent use, moisture discharge;
4) in the time that exhaust emissions pressure reaches 0.3～0.6MPa, open catalytic hydrolysis reaction still material operated pneumatic valve, make the quick spray of material after hydrolysis quick-fried to blow pit, moisture departs from material, filters out micro mist in moisture, moisture discharge;
5) material in screening machine screening blow pit, calcium acetate prepared by screenings and step 3) merges composting, and oversize further screens, and the inorganic matter filtering out does building materials or landfill disposal, the organic matter filtering out returns to catalytic hydrolysis reaction still and is again hydrolyzed after pulverizing.
2. fast hydrolyzing according to claim 1 is processed the method for organic materials discarded object, it is characterized in that step 1) described in the inlet amount of organic materials discarded object be 70～90% of catalytic hydrolysis reaction still capacity.
3. fast hydrolyzing according to claim 2 is processed the method for organic materials discarded object, it is characterized in that step 1) described in the inlet amount of organic materials discarded object be 80% of catalytic hydrolysis reaction still capacity.
4. fast hydrolyzing according to claim 1 is processed the method for organic materials discarded object, it is characterized in that step 2) described in the temperature of superheated steam be 110～200 DEG C.
5. fast hydrolyzing according to claim 1 is processed the method for organic materials discarded object, it is characterized in that step 5) described in the order number of screening machine be 12～20 orders.
6. fast hydrolyzing according to claim 5 is processed the method for organic materials discarded object, it is characterized in that step 5) described in the order number of screening machine be 12 orders.
7. fast hydrolyzing according to claim 1 is processed the method for organic materials discarded object, it is characterized in that step 5) described in inorganic matter refer to sandstone, glass, pottery, described 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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| 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 |
| 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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| 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 |
| CN101585044A (en) * | 2009-06-17 | 2009-11-25 | 宝林 | Food waste acidifying hydrolysis treatment method |
| CN101700096A (en) * | 2009-11-24 | 2010-05-05 | 合肥市爱博生物技术有限公司 | Method for preparing feed by rapidly hydrolyzing vegetal biomass |
| CN101804414A (en) * | 2009-02-13 | 2010-08-18 | 叶毅 | Method and processing system for comprehensively recycling municipal solid wastes |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101804414A (en) * | 2009-02-13 | 2010-08-18 | 叶毅 | Method and processing system for comprehensively recycling municipal solid wastes |
| CN101585044A (en) * | 2009-06-17 | 2009-11-25 | 宝林 | Food waste acidifying hydrolysis treatment method |
| CN101700096A (en) * | 2009-11-24 | 2010-05-05 | 合肥市爱博生物技术有限公司 | Method for preparing feed by rapidly hydrolyzing vegetal biomass |
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