CN112845495B - Hydrolysis process of organic residues - Google Patents
Hydrolysis process of organic residues Download PDFInfo
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- CN112845495B CN112845495B CN202011413758.XA CN202011413758A CN112845495B CN 112845495 B CN112845495 B CN 112845495B CN 202011413758 A CN202011413758 A CN 202011413758A CN 112845495 B CN112845495 B CN 112845495B
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- hydrolysis
- organic
- organic residues
- residues
- treatment device
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- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 72
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The application provides an organic residue hydrolysis process, and belongs to the technical field of organic residue hydrolysis. The organic residue hydrolysis process comprises the following steps: step one, injecting organic residues into a hydrolysis treatment device, and placing the organic residues under preset conditions; injecting a proper amount of catalyst into the organic residue; pressurizing to enable the organic residues to be subjected to subcritical hydrolysis for a preset time; and step four, conveying the organic residues and the gas after the hydrolysis to the next process. The application provides a hydrolysis process of organic remainder, through placing organic remainder in the hydrolysis treatment device of preset condition, then through adding the catalyst of suitable dosage for organic remainder can carry out high-efficient and abundant reaction under the condition of presetting, and can the energy saving.
Description
Technical Field
The invention belongs to the technical field of organic residue hydrolysis, and particularly relates to a hydrolysis process of organic residues.
Background
At present, people pay more attention to garbage classification and treat classified garbage, so that resources can be recycled, and environmental pollution is avoided. In the daily garbage category of production and living, some organic residues which can be reused are also involved, and the organic residues comprise kitchen garbage, discarded vegetable leaves, farmland straws, excrement produced by livestock breeding and the like. In the prior art, organic residues are difficult to treat, the storage time of the organic residues is limited, and otherwise, the organic residues are fermented and rotten, emit odor, are easy to breed bacteria, influence production and the like.
In the prior art, the treatment of organic residues is heavy and high in cost, and no complete equipment and complete treatment method for effectively treating the organic residues exist.
Disclosure of Invention
In view of the above, the present invention provides a process for hydrolyzing organic residues, so as to hydrolyze the organic residues more sufficiently and efficiently in a subcritical hydrolysis state.
The application provides an organic residue hydrolysis process, which comprises the following steps:
step one, injecting organic residues into a hydrolysis treatment device, and placing the organic residues under preset conditions;
injecting a proper amount of catalyst into the organic residue;
pressurizing to enable the organic residues to be subjected to subcritical hydrolysis for a preset time;
and step four, conveying the organic residues and the gas after the hydrolysis to the next process.
Further, in the first step,
firstly, screening the organic residues to remove impurities.
Further, in the first step, the preset conditions are:
the temperature range of 110-150 ℃ and continuous stirring.
Further, the temperature of the preset condition is 120 ℃.
Further, in the second step, the catalyst is injected into the organic residue of the hydrolysis treatment device at a preset speed.
Further, the range of the preset speed is 2L/min-5L/min.
Further, in the third step, the set pressure range is 0.6 Mpa-1.2 Mpa.
Further, in the third step, the preset time period ranges from 0.5 hour to 6 hours.
Further, in the fourth step, the order of the method for transferring the organic residue after completion of hydrolysis and the gas to the next process is:
firstly, discharging gas after hydrolysis into the next procedure to complete pressure relief;
and then conveying the organic residues after the hydrolysis to the next working procedure.
Further, the method for discharging the gas after completion of hydrolysis in the hydrolysis treatment device comprises the following steps:
firstly, reducing the air pressure in the hydrolysis treatment device to 0.2Mpa by adopting a small exhaust valve;
then the air pressure in the hydrolysis device is reduced to normal pressure by adopting a large exhaust valve.
The application has the following beneficial effects:
the application provides a hydrolysis process of organic remainder, through placing organic remainder in the hydrolysis treatment device of preset condition, then through adding the catalyst of suitable dosage for organic remainder can carry out high-efficient and abundant reaction under the condition of presetting, and can the energy saving.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic flow diagram of a process for hydrolyzing organic residues according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart showing reaction conditions in the organic residue hydrolysis process according to an embodiment of the present invention.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
Referring to fig. 1 and 2, the present application provides a process for hydrolyzing organic residues, comprising the steps of: step one, injecting organic residues into a hydrolysis treatment device, and placing the organic residues under preset conditions; injecting a proper amount of catalyst into the organic residue; pressurizing to enable the organic residues to be subjected to subcritical hydrolysis for a preset time; and step four, conveying the organic residues and the gas after the hydrolysis to the next process.
In the first step, the organic residue is screened to remove impurities. It should be understood that some hard objects such as metal and plastic packing boxes inevitably exist in the collected organic residues such as kitchen garbage, which not only can perform hydrolysis reaction, but also can affect the service life of the hydrolysis treatment device. Therefore, it needs to be screened out.
In the first step, the preset conditions are as follows: the temperature range of 110-150 ℃ and continuous stirring. The temperature range of 110-150 ℃ is that the organic residue is hydrolyzed under the subcritical state, so as to ensure that the organic residue is fully hydrolyzed under the action of the catalyst. In this embodiment, it is preferable to set a temperature of 120 c at which the hydrolysis efficiency of the organic residue is highest.
The predetermined conditions also include continuous stirring of the organic residue, it being understood that sufficient contact of the catalyst with the organic residue is required during the injection of the catalyst to ensure sufficient hydrolysis reaction, and therefore continuous stirring of the organic residue.
And in the second step, injecting the catalyst into the organic residues in the hydrolysis treatment device at a preset speed. The range of the preset speed is 2L/min-5L/min.
It should be understood that the injection speed of the catalyst may be set according to the stirring speed of the organic residue to ensure that the catalyst can sufficiently react with the organic residue. In this embodiment, the catalyst injection rate is preferably 2.8L/min.
And in the third step, after the catalyst is added, pressurizing the hydrolysis treatment device, wherein the set pressure range is 0.6 MPa-1.2 MPa. It is understood that the reaction conditions for subcritical hydrolysis of the organic residue are carried out under a certain pressure, and thus, pressurization is required to promote the hydrolysis reaction. In this example, the pressure in the hydrolysis reaction apparatus is preferably 0.9 MPa.
As will be understood by those skilled in the art, in an ideal state, when the catalyst is injected, the organic residue is ensured to be in an environment of 0.9MPa and 120 ℃, and the organic residue can be ensured to be subjected to a sufficient hydrolysis reaction while the catalyst is injected. However, since the catalyst injection is difficult and the catalyst injection is affected by the injection of the catalyst under a pressure of 0.9Mpa, the catalyst injection is performed preferentially, and the catalyst injection is then pressurized, thereby saving energy consumption caused by the catalyst injection under high pressure.
In the third step, the preset duration range is 0.5 to 6 hours. Specifically, the organic residue is subjected to subcritical hydrolysis under the action of a catalyst, at a temperature of 120 ℃ and under a pressure of 0.9Mpa, and a preset time period for sufficient reaction is set (it should be understood that the preset time period should be determined according to the weight of the organic residue), so that the organic residue and gas after hydrolysis are obtained, and the organic residue and gas after hydrolysis are required to be conveyed to the next process for operation.
In the fourth step, the organic residue after hydrolysis and the gas are conveyed to the next process in the following order: firstly, discharging gas after hydrolysis into the next procedure to complete pressure relief; as those skilled in the art will understand, the pressure relief is performed first to ensure that the organic residue after the hydrolysis is stably and safely conveyed to the next process, so the pressure relief operation is performed first, and then the organic residue after the hydrolysis is conveyed to the next process.
Specifically, the method for discharging the gas after hydrolysis in the hydrolysis treatment device comprises the following steps: firstly, reducing the air pressure in the hydrolysis treatment device to 0.2Mpa by adopting a small exhaust valve; then the air pressure in the hydrolysis device is reduced to normal pressure by adopting a large exhaust valve. The small exhaust valve is adopted firstly, so that the pressure is released, the liquid in the hydrolysis treatment device is prevented from being exhausted from the exhaust hole along with the gas, the weight of the liquid and the gas pressure gradually reach balance by reducing the gas pressure to 0.2Mpa, the large exhaust valve is adopted for exhausting, the probability of the liquid being exhausted along with the gas is reduced, and the large exhaust valve can enable the gas pressure to be quickly recovered to the normal pressure state.
As will be understood by those skilled in the art, the gas generated after the organic residue hydrolysis reaction can be used as a raw material to be introduced into the next process, and thus the gas discharged through the pressure discharge can be introduced into the reaction vessel of the next process.
The application provides a hydrolysis process of organic remainder, through placing organic remainder in the hydrolysis treatment device of preset condition, then through adding the catalyst of suitable dosage for organic remainder can carry out high-efficient and abundant reaction under the condition of presetting, and can the energy saving.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (5)
1. The organic residue hydrolysis process is characterized by comprising the following steps:
step one, injecting the organic residues into a hydrolysis treatment device, and placing the organic residues under preset conditions, wherein the preset conditions are as follows: stirring continuously at the temperature of 110-150 ℃;
injecting a proper amount of catalyst into the organic residues, wherein the catalyst is injected into the organic residues of the hydrolysis treatment device at a preset speed, and the preset speed ranges from 2L/min to 5L/min;
pressurizing to enable the organic residues to be subjected to subcritical hydrolysis for a preset time;
conveying the organic residues and the gas after the hydrolysis to the next process; wherein the content of the first and second substances,
the order of the method for conveying the organic residues and the gas after the completion of the hydrolysis to the next process is as follows:
firstly, discharging gas after hydrolysis into the next procedure to complete pressure relief;
conveying the organic residues after hydrolysis to the next process;
wherein the method for discharging the gas after hydrolysis in the hydrolysis treatment device comprises the following steps:
firstly, reducing the air pressure in the hydrolysis treatment device to 0.2Mpa by adopting a small exhaust valve;
then the air pressure in the hydrolysis device is reduced to normal pressure by adopting a large exhaust valve.
2. The organic residue hydrolysis process of claim 1, wherein, in the first step,
firstly, screening the organic residues to remove impurities.
3. The organic residue hydrolysis process of claim 1, wherein the temperature of the preset condition is 120 ℃.
4. The organic residue hydrolysis process of claim 1, wherein in the third step, the set pressure is in a range of 0.6Mpa to 1.2 Mpa.
5. The organic residue hydrolysis process of claim 1, wherein in the third step, the predetermined time period is in a range of 0.5 hours to 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413758.XA CN112845495B (en) | 2020-12-04 | 2020-12-04 | Hydrolysis process of organic residues |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413758.XA CN112845495B (en) | 2020-12-04 | 2020-12-04 | Hydrolysis process of organic residues |
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| Publication Number | Publication Date |
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| CN112845495A CN112845495A (en) | 2021-05-28 |
| CN112845495B true CN112845495B (en) | 2022-07-05 |
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Family Cites Families (8)
| 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 |
| CA2705364C (en) * | 2007-11-20 | 2015-12-01 | Erick Schmidt | Method for producing non-infectious products from infectious organic waste material |
| CN102240661A (en) * | 2011-05-16 | 2011-11-16 | 云南天远生态环保科技有限责任公司 | Pretreatment method and equipment for household garbage |
| CN103121783B (en) * | 2012-06-26 | 2015-07-22 | 深圳市环源科技发展有限公司 | Low-pressure catalytic thermal-hydrolysis sludge treatment method and application thereof |
| CN103274572A (en) * | 2013-05-28 | 2013-09-04 | 国新天汇环境有限公司 | Treatment method of organic solid waste |
| CN105347637A (en) * | 2015-12-14 | 2016-02-24 | 北京洁绿科技发展有限公司 | Continuous sludge pyrohydrolysis system and method |
| CN108840548B (en) * | 2018-08-29 | 2023-08-04 | 湖南军信环保股份有限公司 | Thermal hydrolysis flash separation device, thermal hydrolysis flash separation process, thermal hydrolysis system and thermal hydrolysis process |
| CN109054079B (en) * | 2018-09-10 | 2023-08-15 | 遵义师范学院 | Two-stage hydrolysis device and method for waste plastics |
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