CN108315032B - Low-temperature dry distillation process method for viscous organic residues - Google Patents
Low-temperature dry distillation process method for viscous organic residues Download PDFInfo
- Publication number
- CN108315032B CN108315032B CN201810039244.9A CN201810039244A CN108315032B CN 108315032 B CN108315032 B CN 108315032B CN 201810039244 A CN201810039244 A CN 201810039244A CN 108315032 B CN108315032 B CN 108315032B
- Authority
- CN
- China
- Prior art keywords
- temperature
- low
- pyrolysis
- viscous
- organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/14—Features of low-temperature carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a low-temperature dry distillation process method of viscous organic residues, it is a hazardous waste innocent treatment technical field, the technical scheme adopted is that viscous organic residues and organic waste water are mixed, filtered, heated and then sent into the external heating type rotary low-temperature pyrolysis reactor with heat carrier self-returning function by the pump, carry on the low-temperature pyrolysis at high temperature, change the viscous organic residues into pyrolysis gas and organic carbon residue with certain calorific value through the low-temperature pyrolysis, the pyrolysis gas enters the desulfurization system to desulfurize after the dust removal, the pyrolysis gas after desulfurization is sent into the combustion chamber of the external heating type rotary low-temperature pyrolysis reactor as fuel after the blower is pressurized and provides heat for the low-temperature pyrolysis of viscous organic residues, the organic carbon residue is turned into the biological carbon that can improve the soil after passivation, cooling; the invention is widely used for harmless treatment of dangerous wastes such as oily sludge, pesticide-polluted soil and the like.
Description
Technical Field
The invention relates to a low-temperature dry distillation process method for viscous organic residues, belonging to the technical field of harmless treatment of hazardous wastes.
Background
A certain amount of DMF rectification residue which is harmful to the environment and generated in the production process of synthetic leather in China is sticky organic residue, and the poisonous and harmful sticky organic residue is listed as HW06 type dangerous waste by the nation. The national regulation states that the hazardous waste such as the viscous organic residue must be treated in a harmless way, and cannot cause secondary pollution to the environment.
At present, the harmless treatment of the viscous organic residue does not have mature technology and process at home. The existing treatment methods mainly comprise two methods, namely, the high temperature is utilized for carrying out synergistic treatment in the cement industry and the cement clinker calcining process; secondly, adopting a low-temperature pyrolysis technology to carry out pyrolysis treatment. During the treatment process of the viscous organic residues in the cement industry, impurities of the viscous organic residues can influence the quality of cement. When the low-temperature pyrolysis technology is adopted, the viscous organic residue needs to be dried under the influence of the structure of a low-temperature pyrolysis reactor, the contained water and part of low-boiling organic chemicals are removed, and the viscous organic residue is mixed by biological activated carbon and is converted into dry materials which are not adhered to the pipe wall and the wall and can be conveyed by gas. The process adopting the low-temperature pyrolysis technology needs to dry the viscous organic residues and needs to mix with the biological activated carbon, and has the advantages of long process flow, more production equipment and large consumption of the biological activated carbon. Meanwhile, the viscous organic residue externally-heated rotary low-temperature pyrolysis reactor has no material return function, and has low thermal efficiency, low capacity and high treatment cost.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides the low-temperature dry distillation process method for the viscous organic residues, which has low energy consumption and effectively reduces the treatment cost.
In order to achieve the aim, the technical scheme adopted by the invention is a low-temperature dry distillation process method for viscous organic residues, which is carried out according to the following steps,
a. adding the viscous organic residue into a blending tank, adding organic wastewater into the blending tank for blending, and finally forming a viscous organic residue liquid with fluidity;
b. filtering and heating the blended viscous organic residue liquid, and pumping the liquid into an externally heated rotary low-temperature pyrolysis reactor with a heat carrier self-material returning function to perform pyrolysis reaction; the viscous organic residue is dispersed and heated by a heat carrier in an external heating type rotary low-temperature pyrolysis reactor, and the heated viscous organic residue is converted into pyrolysis gas and organic carbon residue with a certain heat value after low-temperature pyrolysis; the pyrolysis gas and the organic carbon slag are discharged out of the external heating type rotary low-temperature pyrolysis reactor and enter a discharge bin; the heat carrier is recycled in the external heating type rotary low-temperature pyrolysis reactor through the material return pipe;
c. a dust remover is installed in the discharge bin and removes dust from the pyrolysis gas, the pyrolysis gas enters a desulfurization system for desulfurization after dust removal treatment and spraying temperature reduction, organic wastewater generated by spraying circulates to a blending tank to be blended, clean dry distillation gas is obtained after desulfurization treatment, and the clean dry distillation gas is pressurized by a fan and then is fed into a combustion chamber of an external heating type rotary low-temperature pyrolysis reactor as fuel to be combusted, so that heat is provided for low-temperature pyrolysis of viscous organic residue liquid;
d. the organic carbon slag is discharged into an organic carbon slag passivator for passivation through the bottom of the discharge bin, the passivated organic carbon slag is converted into biochar, and the biochar is discharged into a system to enter a biochar finished product bin after being cooled.
Preferably, in the step a, the blending mass ratio of the viscous organic residue to the organic wastewater is 8:1, and the blending temperature is 60-80 ℃.
Preferably, in the step b, when the viscous organic residue is filtered and heated, the heating temperature is 80-120 ℃, the pyrolysis temperature of the externally heated rotary low-temperature pyrolysis reactor is 500-550 ℃, the pyrolysis pressure is +2000 Pa-1000 Pa, and the return amount of the heat carrier is 2-3 times of the addition amount of the viscous organic residue liquid.
Preferably, in the step b, the density of the heat carrier is 2.0-2.6 g/cm3The temperature of the heat carrier is 500 ℃, the loss rate of the heat carrier is not more than 1 percent, and the heat carrier does not participate in the liquid pyrolysis reaction of the viscous organic residues; the heat carrier has certain friction force on the viscous organic residue liquid to prevent the viscous organic residue liquid from coking on the wall of the pyrolysis reactor。
Preferably, the passivation medium of the organic carbon residue in the step d is water vapor with the pressure of 1.0MPa and the temperature of 180 ℃, and the amount of the water vapor is 10 percent of that of the organic carbon residue.
Compared with the prior art, the invention has the following technical effects: the invention can effectively treat the toxic and harmful viscous organic residues with low cost; the heat carrier is recycled in the pyrolysis reactor; the heat carrier is low in acquisition cost and does not participate in the pyrolysis reaction; the treatment cost of the viscous organic residues is low; pyrolysis gas can be completely recycled, and near zero emission is realized; organic wastewater generated in the low-temperature pyrolysis process is used for blending viscous organic residues, so that near zero emission is realized; the organic carbon residue is converted into biochar for improving soil after passivation treatment. Meanwhile, the method can also be used for harmless treatment of dangerous wastes such as oily sludge, pesticide-polluted soil and the like.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, the low-temperature dry distillation process method for the viscous organic residues comprises the following steps,
a. adding the viscous organic residue into a blending tank, adding organic wastewater into the blending tank for blending, wherein the blending mass ratio of the viscous organic residue to the organic wastewater is 8:1, the blending temperature is 60-80 ℃, and finally, a viscous organic residue liquid with fluidity is formed;
b. filtering and heating the blended viscous organic residue liquid, and pumping the liquid into an externally heated rotary low-temperature pyrolysis reactor with a heat carrier self-material returning function to perform pyrolysis reaction; wherein the heating temperature of the viscous organic residue is 80-120 ℃ when the viscous organic residue is filtered and heated, and the pyrolysis temperature of the external heating type rotary low-temperature pyrolysis reactor is 50 DEGThe temperature is 0-550 ℃, the pyrolysis pressure is +2000 Pa-1000 Pa, and the material return amount of the heat carrier is 2-3 times of the addition amount of the viscous organic residue liquid; the viscous organic residue is dispersed and heated by a heat carrier in the externally heated rotary low-temperature pyrolysis reactor, and the heat carrier is used for rapidly dispersing and heating the viscous organic residue so as to prevent the viscous organic residue from coking on the inner wall of the pyrolysis reactor. The density of the heat carrier is 2.0-2.6 g/cm3The temperature of the heat carrier is 500 ℃, the loss rate of the heat carrier is not more than 1 percent, and the heat carrier does not participate in the liquid pyrolysis reaction of the viscous organic residues; the heat carrier has a certain friction force on the viscous organic residue liquid to prevent the viscous organic residue liquid from coking on the wall of the pyrolysis reactor; the heated viscous organic residue is converted into pyrolysis gas and organic carbon residue with a certain calorific value through low-temperature pyrolysis; the pyrolysis gas and the organic carbon slag are discharged out of the external heating type rotary low-temperature pyrolysis reactor and enter a discharge bin; the heat carrier is recycled in the external heating type rotary low-temperature pyrolysis reactor through the material return pipe;
c. a dust remover is installed in the discharge bin and removes dust from the pyrolysis gas, the pyrolysis gas enters a desulfurization system for desulfurization after dust removal treatment and spraying temperature reduction, organic wastewater generated by spraying circulates to a blending tank to be blended, clean dry distillation gas is obtained after desulfurization treatment, and the clean dry distillation gas is pressurized by a fan and then is fed into a combustion chamber of an external heating type rotary low-temperature pyrolysis reactor as fuel to be combusted, so that heat is provided for low-temperature pyrolysis of viscous organic residue liquid;
d. the organic carbon slag is discharged into an organic carbon slag passivator through the bottom of the discharge bin for passivation, the passivated organic carbon slag is converted into biochar, the passivation medium of the organic carbon slag is water vapor with the pressure of 1.0MPa and the temperature of 180 ℃, the water vapor consumption is 10 percent of that of the organic carbon slag, and the biochar enters a biochar finished product bin after being cooled by a discharge system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.
Claims (3)
1. A low-temperature dry distillation process method for viscous organic residues is characterized by comprising the following steps: the method comprises the following steps of (1),
a. adding the viscous organic residue into a blending tank, adding organic wastewater into the blending tank for blending, and finally forming a viscous organic residue liquid with fluidity;
b. filtering and heating the blended viscous organic residue liquid, and pumping the liquid into an externally heated rotary low-temperature pyrolysis reactor with a heat carrier self-material returning function to perform pyrolysis reaction; the viscous organic residue is dispersed and heated by a heat carrier in an external heating type rotary low-temperature pyrolysis reactor, and the heated viscous organic residue is converted into pyrolysis gas and organic carbon residue with a certain heat value after low-temperature pyrolysis; the pyrolysis gas and the organic carbon slag are discharged out of the external heating type rotary low-temperature pyrolysis reactor and enter a discharge bin; the heat carrier is recycled in the external heating type rotary low-temperature pyrolysis reactor through the material return pipe; when the viscous organic residue is filtered and heated, the heating temperature is 80-120 ℃, the pyrolysis temperature of an external heating type rotary low-temperature pyrolysis reactor is 500-550 ℃, the pyrolysis pressure is +2000 Pa-1000 Pa, and the return amount of a heat carrier is 2-3 times of the addition amount of the viscous organic residue liquid;
the density of the heat carrier is 2.0-2.6 g/cm3The temperature of the heat carrier is 500 ℃, the loss rate of the heat carrier is not more than 1 percent, and the heat carrier does not participate in the liquid pyrolysis reaction of the viscous organic residues; the heat carrier has a certain friction force on the viscous organic residue liquid to prevent the viscous organic residue liquid from coking on the wall of the pyrolysis reactor;
c. a dust remover is installed in the discharge bin and removes dust from the pyrolysis gas, the pyrolysis gas enters a desulfurization system for desulfurization after dust removal treatment and spraying temperature reduction, organic wastewater generated by spraying circulates to a blending tank to be blended, clean dry distillation gas is obtained after desulfurization treatment, and the clean dry distillation gas is pressurized by a fan and then is fed into a combustion chamber of an external heating type rotary low-temperature pyrolysis reactor as fuel to be combusted, so that heat is provided for low-temperature pyrolysis of viscous organic residue liquid;
d. the organic carbon slag is discharged into an organic carbon slag passivator for passivation through the bottom of the discharge bin, the passivated organic carbon slag is converted into biochar, and the biochar is discharged out of the system after being cooled and enters a biochar finished product bin.
2. The low-temperature dry distillation process method for sticky organic residues, as claimed in claim 1, is characterized in that: in the step a, the blending mass ratio of the viscous organic residue to the organic wastewater is 8:1, and the blending temperature is 60-80 ℃.
3. The low-temperature dry distillation process method for sticky organic residues, as claimed in claim 1, is characterized in that: and d, the passivation medium of the organic carbon slag in the step d is water vapor with the pressure of 1.0MPa and the temperature of 180 ℃, and the using amount of the water vapor is 10 percent of that of the organic carbon slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039244.9A CN108315032B (en) | 2018-01-16 | 2018-01-16 | Low-temperature dry distillation process method for viscous organic residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039244.9A CN108315032B (en) | 2018-01-16 | 2018-01-16 | Low-temperature dry distillation process method for viscous organic residues |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108315032A CN108315032A (en) | 2018-07-24 |
| CN108315032B true CN108315032B (en) | 2021-06-15 |
Family
ID=62893506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810039244.9A Active CN108315032B (en) | 2018-01-16 | 2018-01-16 | Low-temperature dry distillation process method for viscous organic residues |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108315032B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580727A (en) * | 2009-06-15 | 2009-11-18 | 煤炭科学研究总院 | Cleaning, pyrolysis and oil extracting methods of low-rank coal by internal heat rolling bed |
| JP2017018873A (en) * | 2015-07-08 | 2017-01-26 | 敏弘 岡部 | Production method of vegetable liquefaction product using cashew nut shell oil, and production method of vegetable phenol particulate matter and carbide |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203648118U (en) * | 2013-12-23 | 2014-06-18 | 福建省科辉环保工程有限公司 | Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues |
| CN107557038A (en) * | 2016-06-30 | 2018-01-09 | 神华集团有限责任公司 | The copyrolysis method and pyrolytic reaction system of a kind of coal and sticky carbonaceous material |
-
2018
- 2018-01-16 CN CN201810039244.9A patent/CN108315032B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580727A (en) * | 2009-06-15 | 2009-11-18 | 煤炭科学研究总院 | Cleaning, pyrolysis and oil extracting methods of low-rank coal by internal heat rolling bed |
| JP2017018873A (en) * | 2015-07-08 | 2017-01-26 | 敏弘 岡部 | Production method of vegetable liquefaction product using cashew nut shell oil, and production method of vegetable phenol particulate matter and carbide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108315032A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105038822B (en) | The cleaning method and device of a kind of sludge | |
| CN109179939B (en) | Treatment method and device for oily sludge | |
| CN202558748U (en) | Sludge pyrolysis processing device utilizing waste plastic as supplementary energy | |
| EP3838850B1 (en) | Oil sludge pyrolysis device | |
| CN104874593A (en) | Method and device for treating organic polluted soil by two-section-type indirect thermal desorption technology | |
| CN107200455A (en) | The processing method of oil-based drill cuttings and oily sludge | |
| CN105000767A (en) | Oil mud cracking and polluted soil thermal desorption combination treatment system | |
| CN210176701U (en) | System for municipal sludge deep reduction treatment | |
| CN108840544A (en) | A kind of reclaiming industrial sludge processing method | |
| CN109607999A (en) | A kind of petroleum greasy filth environment-friendly treatment method | |
| CN107601804A (en) | A kind of method that self-heating moulding oily sludge pyrolysis prepares adsorbent | |
| CN108264946A (en) | A kind of harmlessness disposing of waste mineral oil utilizes method | |
| CN111140856A (en) | High-calorific-value hazardous waste treatment system and treatment method based on plasma treatment | |
| CN104773935A (en) | Treatment process for dry distillation carbonization of sludge | |
| CN111004640A (en) | Household garbage pyrolysis carbonization disposal system and method | |
| CN205061973U (en) | System for indirect heating formula pyrolysis and carbonization living beings | |
| CN203976600U (en) | A kind of city disposal of oily sludge system | |
| CN204918477U (en) | Clean processing apparatus of mud | |
| CN108315032B (en) | Low-temperature dry distillation process method for viscous organic residues | |
| CN107513392A (en) | It is a kind of to handle house refuse and the system and method for sewage sludge | |
| CN107163960A (en) | A kind of waste painting slag containing zinc reclaims zinc technology and system with vinasse cooperative disposal | |
| CN110655076A (en) | Production process for preparing activated carbon from sludge | |
| CN106166558A (en) | A kind of method utilizing municipal administration dewatered sludge to prepare microwave absorption | |
| CN103203251B (en) | Catalyst for pyrolyzing coking wastewater by using converter high-temperature flue gas | |
| CN101200646B (en) | Waste water zero discharging method for coke-oven gas dew-point returning process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |