CN112058859B - High-waste treatment device and method for chlorohydrocarbon - Google Patents
High-waste treatment device and method for chlorohydrocarbon Download PDFInfo
- Publication number
- CN112058859B CN112058859B CN202010838839.8A CN202010838839A CN112058859B CN 112058859 B CN112058859 B CN 112058859B CN 202010838839 A CN202010838839 A CN 202010838839A CN 112058859 B CN112058859 B CN 112058859B
- Authority
- CN
- China
- Prior art keywords
- waste
- inlet
- outlet
- hydrogen
- solid
- 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
- 239000002699 waste material Substances 0.000 title claims abstract description 229
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000001257 hydrogen Substances 0.000 claims abstract description 75
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 75
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000003763 carbonization Methods 0.000 claims abstract description 61
- 239000007787 solid Substances 0.000 claims abstract description 61
- 239000002893 slag Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims abstract description 31
- 239000002253 acid Substances 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 93
- 239000012071 phase Substances 0.000 claims description 45
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 37
- 239000000460 chlorine Substances 0.000 claims description 37
- 229910052801 chlorine Inorganic materials 0.000 claims description 37
- 238000006298 dechlorination reaction Methods 0.000 claims description 28
- 238000004064 recycling Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 239000002910 solid waste Substances 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000010808 liquid waste Substances 0.000 claims description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 14
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007792 gaseous phase Substances 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 19
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 239000000446 fuel Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000002572 peristaltic effect Effects 0.000 description 6
- 239000002440 industrial waste Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- CKAPSXZOOQJIBF-UHFFFAOYSA-N hexachlorobenzene Chemical compound ClC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl CKAPSXZOOQJIBF-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a chlorohydrocarbon high-waste treatment device which comprises a carbonization furnace, wherein the carbonization furnace is provided with a waste inlet, a hydrogen inlet, a solid slag outlet and a gas phase outlet, the waste inlet is connected with a waste feeding device, the solid slag outlet is provided with a screw discharger, and the gas phase outlet is connected with an acid absorption system. The invention also discloses a method for treating the high waste of the chlorohydrocarbon by using the device. The invention has simple process and can realize the reduction, harmless and stabilization treatment of the chlorohydrocarbon high waste.
Description
Technical Field
The invention belongs to the technical field of industrial waste treatment, and particularly relates to a chlorohydrocarbon high-waste treatment device and a method thereof.
Background
A large amount of chlorine-containing wastes are generated in the industrial and agricultural production processes of modern chemical industry, pesticides, medicines and the like, the main components of the chlorine-containing wastes are chloralkane, chlorine-containing olefin, chlorobenzene-containing substances and the like, the chlorine-containing hydrocarbon substances belong to dangerous wastes, and if treatment measures are not taken for direct piling or discharging, the chlorine-containing hydrocarbon substances can seriously damage atmosphere, soil and water resources and threaten the environment that human beings rely on for survival. Currently, there are three main methods of treatment:
(1) and (3) a curing method: hazardous waste is immobilized in an inert solid substrate by an inorganic pozzolanic material or a chemically stabilizing agent, converted to a highly insoluble stable substance, reducing the toxicity and migration of the waste, while improving the engineering properties of the treated object for ease of transport and disposal. The curing process disposal technology is mature, the required materials are cheap and abundant, and a large range of hazardous waste can be disposed of. However, the solidification method has disadvantages in that the volume and weight of the waste after disposal are increased, skilled workers and expensive equipment are required for the disposal, and secondary pollution is caused by improper operation.
(2) A landfill method: the land disposing method for dangerous waste consists of waste pre-treating facility, waste landfill facility and percolate collecting and treating facility, and can isolate dangerous waste and percolate from environment and maintain the waste safely for some time. However, the landfill method brings many negative hazards, the problems that odor disturbs people and leachate pollutes water sources are prominent, in addition, the landfill is not a final disposal means, a large amount of land is required to be occupied, and the later maintenance cost and risk are high.
(3) The burning method comprises the following steps: the method is an effective means for deeply treating the organic matters in the waste liquid by utilizing the air under the high-temperature condition, generally, the organic matters are converted into carbon dioxide and water through high-temperature incineration and discharged to the atmosphere, and as long as the temperature in a furnace is more than 800 ℃, and the waste has enough retention time in a high-temperature region in the furnace, the waste can be basically and completely decomposed, so that harmless treatment is realized.
The incineration method is a widely used treatment method at present because it can completely decompose organic wastes and realize harmless treatment. However, the incineration method of the high-waste chlorinated hydrocarbon is difficult to treat and has higher incineration cost. And the prior incineration technology has requirements on the treatment of the chlorine content in the waste, and can not treat the high-chlorine-content chlorohydrocarbon solid waste and waste liquid simultaneously, because the organic chlorine has about inhibition on combustion in the incineration and is not easy to stably catch fire.
For example, CN107559837A discloses a method for burning chlorine-containing waste liquid and waste gas and treating tail gas, which comprises the steps of raising the temperature of a burning furnace to 900-1000 ℃, introducing industrial waste gas into the burning furnace, mixing the industrial waste gas with combustion-supporting gas and burning the mixture; atomizing the industrial waste liquid by a spray gun and then spraying the industrial waste liquid into a human incinerator for incineration; and tail gas is subjected to waste heat recovery, quenching for chlorine removal, and alkali washing for discharge. The method has the disadvantages that the method cannot simultaneously treat the chlorinated waste liquid with high chlorine content and the waste solids, cannot realize resource utilization, has high treatment cost and generates a large amount of waste water.
For another example, CN104501186A discloses a device and a method for treating waste gas/liquid containing high chlorine and fluorine, which requires natural gas as an additional fuel to maintain the combustion temperature at about 1200 ℃ and 1400 ℃. The defects that the high-chlorine-content chlorinated waste liquid and the waste solids cannot be treated simultaneously, the resource utilization cannot be realized, and the treatment cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a chlorohydrocarbon high-waste treatment device and a method thereof, so that the chlorohydrocarbon high-waste is reduced and harmlessly treated.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a high waste treatment device of chlorohydrocarbon, includes the carbide furnace, the carbide furnace be provided with waste material import, hydrogen import, solid sediment export and gaseous phase export, the waste material import with waste material feeding device link to each other, solid sediment export on be provided with the screw rod discharger, gaseous phase export and acid absorption system be connected.
Preferably, the waste material feeding device comprises a solid waste material feeding device and a liquid waste material feeding device, the solid waste material feeding device comprises a solid feeding hopper and a screw feeder, an outlet of the solid feeding hopper is connected with an inlet of the screw feeder, an outlet of the screw feeder is connected with a waste material inlet, the liquid waste material feeding device comprises a waste liquid groove and a waste liquid pump, an outlet of the waste liquid groove is connected with an inlet of the waste liquid pump, and an outlet of the waste liquid pump is connected with the waste material inlet.
Preferably, a gas phase outlet of the acid absorption system is connected with an inlet of a hydrogen recycling pump, and an outlet of the hydrogen recycling pump is connected with the hydrogen inlet.
Preferably, the carbonization furnace is a twin-screw propelling carbonization furnace.
The invention also discloses a method for treating chlorohydrocarbon high waste by using the device, which comprises the following steps:
(1) firstly, introducing nitrogen into the carbonization furnace through the waste inlet for replacement for 10-30 min;
(2) heating the carbonization furnace to 600-900 ℃;
(3) continuously feeding the high-waste chlorohydrocarbon into the carbonization furnace through a waste inlet by the waste feeding device, and simultaneously continuously feeding hydrogen into the carbonization furnace through the hydrogen inlet to perform continuous dechlorination and carbonization to obtain dechlorinated slag and a gas-phase product containing hydrogen chloride and unreacted hydrogen;
(4) dechlorination slag is sent into the screw discharging device through the solid slag outlet, and the gas-phase product is sent into the acid absorption system through the gas-phase outlet.
Preferably, a gas phase outlet of the acid absorption system is connected with an inlet of a hydrogen recycling pump, an outlet of the hydrogen recycling pump is connected with the hydrogen inlet, and the acid absorption system separates hydrogen chloride from an input gas phase product and returns the gas phase product to the carbonization furnace through the hydrogen inlet for recycling.
Preferably, the waste material feeding device comprises a solid waste material feeding device and a liquid waste material feeding device, the solid waste material feeding device comprises a solid feeding hopper and a screw feeder, an outlet of the solid feeding hopper is connected with an inlet of the screw feeder, an outlet of the screw feeder is connected with a waste material inlet, the liquid waste material feeding device comprises a waste liquid tank and a waste liquid pump, an outlet of the waste liquid tank is connected with an inlet of the waste liquid pump, an outlet of the waste liquid pump is connected with the waste material inlet, when the chlorohydrocarbon high waste is liquid, the chlorohydrocarbon high waste is sent into the carbonization furnace through the waste liquid tank and the waste liquid pump, and when the chlorohydrocarbon high waste is solid, the chlorohydrocarbon high waste is sent into the carbonization furnace through the solid feeding hopper and the screw feeder.
Preferably, the mole ratio of chlorine to hydrogen in the chlorohydrocarbon high waste is 1: 0.6-1.5.
Preferably, the total chlorine content of the chlorohydrocarbon high waste is above 70.3 wt%.
Preferably, the feeding amount of the chlorohydrocarbon high waste is 500-1500 g/h.
The invention can treat liquid or solid high waste of chlorohydrocarbon, such as trichloromethane, carbon tetrachloride, Trichloroethylene (TCE), tetrachloroethylene, chlorinated olefin, low chlorinated aromatic hydrocarbon and waste liquid generated in the production thereof; solid high-content chlorohydrocarbon wastes such as polychlorinated aromatic hydrocarbon waste residues, polyvinyl chloride waste materials and the like
In the invention, hydrogen is added to coordinate with the dechlorination and carbonization of the high-waste chlorohydrocarbon, so that the chlorine removed is converted into hydrogen chloride and then removed.
In the invention, different materials have different reaction times in the reaction furnace at different reaction temperatures. The temperature is increased, the reaction time can be properly reduced, namely the feeding amount can be properly increased; the different materials can achieve equivalent dechlorination effect, the different feeding amounts are different, namely the different reaction times are different, for example, the feeding amount of the hexachlorobenzene waste residue is lower than that of the TCE waste in the same reaction furnace at the same reaction temperature, and the same treatment effect can be achieved. Therefore, the feeding amount of the chlorinated hydrocarbon high waste in the invention is 500-1500 g/h.
According to the invention, reaction materials are subjected to dechlorination and carbonization reactions in a carbonization furnace and continuously discharged, the dechlorination and carbonization reaction products realize gas-solid separation through a solid slag outlet and a gas phase outlet, and the main component of the solid dechlorination slag is activated carbon which is collected by a screw discharger and is recycled as fuel; the gas phase product is hydrogen chloride and unreacted hydrogen, and the hydrogen chloride is separated by an acid absorption system and then returned to the carbonization furnace through a hydrogen inlet for recycling.
Compared with the prior art, the invention has the beneficial effects that:
1. the device and the method can realize continuous and stable operation, and can treat various solid, liquid and gaseous chlorohydrocarbon wastes with the total chlorine content of more than 70.3wt percent, so that chlorohydrocarbon high wastes which cannot be treated by the conventional method can be effectively treated;
2. the device and the method have the advantages that the device and the method are environment-friendly and low in cost, chlorinated hydrocarbons are subjected to dechlorination and carbonization and are converted into dechlorination residues and inorganic chlorine, and the main component of the dechlorination residues is activated carbon which can be recycled as fuel; the gas-phase product is hydrogen chloride and unreacted hydrogen, the hydrogen chloride is separated by an acid absorption system and then returns to the carbonization furnace through a hydrogen inlet for recycling, so that the reduction and harmless treatment are realized, the pollution to the environment is eliminated, and the economic benefit and the social benefit are extremely high;
3. the treatment efficiency is high, and the chlorine content in the dechlorination slag after treatment is below 2.4 wt%.
Drawings
FIG. 1 is a process flow diagram of the present invention.
In the figure, 1 is a waste liquid groove, 2 is a waste liquid pump, 3 is a solid charging hopper, 4 is a screw feeder, 5 is a carbonization furnace, 6 is a screw discharger, 7 is an acid absorption system, 8 is a hydrogen recycling pump, 9 is a hydrogen inlet, 10 is a waste material charging device, and 11 is a gas phase outlet.
Detailed Description
As shown in fig. 1, the chlorohydrocarbon high waste treatment device comprises a carbonization furnace 5, wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, the solid slag outlet is provided with a screw discharger 6, and the gas phase outlet 11 is connected with an acid absorption system 7; the waste feeding device 10 consists of a solid waste feeding device and a liquid waste feeding device, the solid waste feeding device comprises a solid feeding hopper 3 and a screw feeder 4, an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste inlet, the liquid waste feeding device comprises a waste liquid tank 1 and a waste liquid pump 2, an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with a waste inlet; the gas phase outlet of the acid absorption system 7 is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
The process flow is as follows:
(1) firstly, introducing nitrogen into the carbonization furnace through a waste material inlet for replacement, and completely replacing air in the carbonization furnace to prevent dioxin;
(2) heating the carbonization furnace to the reaction temperature;
(3) continuously feeding the high-waste chlorohydrocarbon into a carbonization furnace through a waste material inlet by using a waste material feeding device, simultaneously continuously feeding hydrogen into the carbonization furnace through a hydrogen inlet, and continuously dechlorinating and carbonizing to obtain dechlorinated slag and a gas-phase product containing hydrogen chloride and unreacted hydrogen, wherein the main component of the solid-phase dechlorinated slag is activated carbon, and the gas-phase product is a mixture containing the hydrogen chloride and the unreacted hydrogen;
(4) dechlorination slag is sent into the screw discharging device through a solid slag outlet and collected by the screw discharging device to be recycled as fuel; and (3) feeding the gas-phase product into an acid absorption system through a gas-phase outlet, absorbing hydrogen chloride by the gas-phase product through the acid absorption system to prepare by-product hydrochloric acid, and returning unreacted hydrogen after separating the hydrogen chloride into the carbonization furnace through a hydrogen inlet for recycling.
The present invention will be described in further detail with reference to examples, but the present invention is not limited to only the following examples.
Example 1
A high waste treatment device of chlorohydrocarbon comprises a carbonization furnace 5 (twin-screw propulsion type, adopting electric heating for temperature control), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, the solid slag outlet is provided with a screw discharger 6 (a single screw discharger with water cooling), and the gas phase outlet 11 is connected with an acid absorption system 7; the waste feeding device 10 consists of a solid waste feeding device and a liquid waste feeding device, the solid waste feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (single screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste inlet, the liquid waste feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating TCE waste liquid (the total chlorine content is 72.1 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 10 min;
the temperature of the carbonization furnace is 600 ℃;
the feeding speed of the TCE waste liquid is 800g/h, and the mol ratio of chlorine to hydrogen in the TCE waste liquid is 1: 0.8;
as a result: after the device stably operates for 4 hours, the chlorine content of the dechlorination slag is sampled and analyzed to be 2.3wt percent, and the dechlorination slag is mainly active carbon and can be used as fuel.
Example 2
A chlorohydrocarbon high waste treatment device comprises a carbonization furnace 5 (a twin-screw propulsion type, and electric heating temperature control is adopted), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, a screw discharger 6 (a twin-screw discharger with water cooling) is arranged on the solid slag outlet, and the gas phase outlet 11 is connected with an acid absorption system 7; the waste feeding device 10 consists of a solid waste feeding device and a liquid waste feeding device, the solid waste feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (single screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste inlet, the liquid waste feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating TCE waste liquid (the total chlorine content is 73.9 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 15 min;
the temperature of the carbonization furnace is 750 ℃;
the feeding speed of the TCE waste liquid is 1000g/h, and the molar ratio of chlorine to hydrogen in the TCE waste liquid is 1: 1;
as a result: after the device stably runs for 4 hours, the chlorine content of the dechlorination slag is sampled and analyzed to be 2.1 wt%, and the dechlorination slag is mainly active carbon and can be used as fuel.
Example 3
A high waste treatment device of chlorohydrocarbon comprises a carbonization furnace 5 (twin-screw propulsion type, adopting electric heating for temperature control), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, the solid slag outlet is provided with a screw discharger 6 (a single screw discharger with water cooling), and the gas phase outlet 11 is connected with an acid absorption system 7; the waste material feeding device 10 consists of a solid waste material feeding device and a liquid waste material feeding device, wherein the solid waste material feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (double-screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste material inlet, the liquid waste material feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste material inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating TCE waste liquid (the total chlorine content is 72.1 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 20 min;
the temperature of the carbonization furnace is 900 ℃;
the feeding speed of the TCE waste liquid is 1200g/h, and the mol ratio of chlorine to hydrogen in the TCE waste liquid is 1: 1.2;
as a result: after the device stably runs for 4 hours, the chlorine content of the dechlorination slag is sampled and analyzed to be 1.3 wt%, and the dechlorination slag is mainly active carbon and can be used as fuel.
Example 4
A high waste treatment device of chlorohydrocarbon comprises a carbonization furnace 5 (double screw propulsion type, adopting electromagnetic heating for temperature control), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, the solid slag outlet is provided with a screw discharger 6 (single screw discharger with water cooling), and the gas phase outlet 11 is connected with an acid absorption system 7; the waste feeding device 10 consists of a solid waste feeding device and a liquid waste feeding device, the solid waste feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (single screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste inlet, the liquid waste feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating TCE waste liquid (the total chlorine content is 70.3 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 25 min;
the temperature of the carbonization furnace is 750 ℃;
the feeding speed of the TCE waste liquid is 1000g/h, and the mol ratio of chlorine to hydrogen in the TCE waste liquid is 1: 0.6;
as a result: after the device stably runs for 4 hours, the chlorine content of the dechlorination slag is sampled and analyzed to be 2.4 wt%, and the dechlorination slag is mainly active carbon and can be used as fuel.
Example 5
A chlorohydrocarbon high waste treatment device comprises a carbonization furnace 5 (a double-screw propulsion type, electromagnetic heating temperature control is adopted), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, a screw discharger 6 (a double-screw discharger with water cooling) is arranged on the solid slag outlet, and the gas phase outlet 11 is connected with an acid absorption system 7; the waste material feeding device 10 consists of a solid waste material feeding device and a liquid waste material feeding device, wherein the solid waste material feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (single screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste material inlet, the liquid waste material feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste material inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating TCE waste liquid (the total chlorine content is 72.1 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 30 min;
the temperature of the carbonization furnace is 750 ℃;
the feeding speed of the TCE waste liquid is 1000g/h, and the mol ratio of chlorine to hydrogen in the TCE waste liquid is 1: 1.5;
as a result: after the device stably operates for 4 hours, the chlorine content of the dechlorination slag is 1.8 wt% through sampling analysis, and the dechlorination slag is mainly active carbon and can be used as fuel.
Example 6
A high waste treatment device of chlorohydrocarbon comprises a carbonization furnace 5 (twin-screw propulsion type, electromagnetic heating temperature control is adopted), wherein the carbonization furnace 5 is provided with a waste inlet, a hydrogen inlet 9, a solid slag outlet and a gas phase outlet 11, the waste inlet is connected with a waste feeding device 10, the solid slag outlet is provided with a screw discharger 6 (twin-screw discharger with water cooling), and the gas phase outlet 11 is connected with an acid absorption system 7; the waste feeding device 10 consists of a solid waste feeding device and a liquid waste feeding device, the solid waste feeding device comprises a solid feeding hopper 3 and a screw feeder 4 (a double-screw feeder), an outlet of the solid feeding hopper 3 is connected with an inlet of the screw feeder 4, an outlet of the screw feeder 4 is connected with a waste inlet, the liquid waste feeding device comprises a waste liquid tank 1 and a waste liquid pump 2 (a peristaltic pump), an outlet of the waste liquid tank 1 is connected with an inlet of the waste liquid pump 2, and an outlet of the waste liquid pump 2 is connected with the waste inlet; the gas phase outlet of the acid absorption system is connected with the inlet of a hydrogen recycling pump 8, and the outlet of the hydrogen recycling pump 8 is connected with a hydrogen inlet 9.
When the device is used for treating the hexachlorobenzene waste residue solid (the total chlorine content is 70.3 percent), the parameters are controlled as follows:
introducing nitrogen for replacement for 20 min;
the temperature of the carbonization furnace is 800 ℃;
the feeding speed of the TCE waste liquid is 900g/h, and the mol ratio of chlorine to hydrogen in the TCE waste liquid is 1: 1;
as a result: after the device stably runs for 4 hours, the chlorine content of the dechlorination slag is sampled and analyzed to be 2.2 wt%, and the dechlorination slag is mainly active carbon and can be used as fuel.
Claims (9)
1. The utility model provides a high waste treatment device of chlorohydrocarbon, its characterized in that includes the carbide furnace, the carbide furnace be provided with waste material import, hydrogen import, solid sediment export and gaseous phase export, waste material import and waste material feeding device link to each other, solid sediment export on be provided with the screw rod discharger, gaseous phase export be connected with sour absorption system, sour absorption system's gaseous phase export link to each other with the import of hydrogen retrieval and utilization pump, the export of hydrogen retrieval and utilization pump with the hydrogen import link to each other, the device handle the concrete method of the high waste of chlorohydrocarbon and be:
(1) firstly, introducing nitrogen into the carbonization furnace through the waste inlet for replacement for 10-30 min;
(2) heating the carbonization furnace to 600-900 ℃;
(3) continuously feeding the high-waste chlorohydrocarbon into the carbonization furnace through a waste inlet by the waste feeding device, and simultaneously continuously feeding hydrogen into the carbonization furnace through the hydrogen inlet to perform continuous dechlorination and carbonization to obtain dechlorinated slag and a gas-phase product containing hydrogen chloride and unreacted hydrogen;
(4) dechlorination slag is sent into the screw discharging device through the solid slag outlet, and the gas-phase product is sent into the acid absorption system through the gas-phase outlet.
2. The apparatus of claim 1, wherein the waste feeder comprises a solid feeder and a screw feeder, the outlet of the solid feeder is connected to the inlet of the screw feeder, the outlet of the screw feeder is connected to the waste inlet, the liquid feeder comprises a waste liquid tank and a waste liquid pump, the outlet of the waste liquid tank is connected to the inlet of the waste liquid pump, and the outlet of the waste liquid pump is connected to the waste inlet.
3. The apparatus for treating chlorinated hydrocarbon high waste according to claim 1, wherein the carbonization furnace is a twin screw propelling carbonization furnace.
4. Process for treating chlorinated hydrocarbon high waste using the plant according to claim 1, characterized in that it comprises the following steps:
(1) firstly, introducing nitrogen into the carbonization furnace through the waste inlet for replacement for 10-30 min;
(2) heating the carbonization furnace to 600-900 ℃;
(3) continuously feeding the high-waste chlorohydrocarbon into the carbonization furnace through a waste inlet by the waste feeding device, and simultaneously continuously feeding hydrogen into the carbonization furnace through the hydrogen inlet to perform continuous dechlorination and carbonization to obtain dechlorinated slag and a gas-phase product containing hydrogen chloride and unreacted hydrogen;
(4) dechlorination slag is sent into the screw discharging device through the solid slag outlet, and the gas phase product is sent into the acid absorption system through the gas phase outlet.
5. The method for treating chlorohydrocarbon high waste as claimed in claim 4, characterized in that the gas phase outlet of the acid absorption system is connected to the inlet of a hydrogen reuse pump, the outlet of the hydrogen reuse pump is connected to the hydrogen inlet, and the acid absorption system separates the input gas phase product from hydrogen chloride and returns the product to the carbonization furnace through the hydrogen inlet for recycling.
6. The process for the treatment of chlorinated hydrocarbon high waste according to claim 4, characterized in that the waste feeding means consist of solid waste feeding means and liquid waste feeding means, the solid waste material feeding device comprises a solid feeding hopper and a screw feeder, an outlet of the solid feeding hopper is connected with an inlet of the screw feeder, the outlet of the screw feeder is connected with the waste inlet, the liquid waste feeding device comprises a waste liquid groove and a waste liquid pump, the outlet of the waste liquid groove is connected with the inlet of the waste liquid pump, the outlet of the waste liquid pump is connected with the waste material inlet, when the high waste of the chlorohydrocarbon is liquid, the waste liquid is pumped into the carbonization furnace through the waste liquid tank and the waste liquid pump, when the high waste of the chlorohydrocarbon is solid, and the mixture is fed into the carbonization furnace through the solid charging hopper and the screw feeder.
7. The method of claim 4, characterized in that the mole ratio of chlorine to hydrogen in the chlorohydrocarbon high waste is 1: 0.6-1.5.
8. The process for treating chlorohydrocarbon high waste as claimed in claim 4, characterized in that the total chlorine content of the chlorohydrocarbon high waste is over 70.3 wt%.
9. The method for treating high waste of chlorinated hydrocarbons as claimed in claim 4, wherein the feeding amount of the high waste of chlorinated hydrocarbons is 500-1500 g/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838839.8A CN112058859B (en) | 2020-08-19 | 2020-08-19 | High-waste treatment device and method for chlorohydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838839.8A CN112058859B (en) | 2020-08-19 | 2020-08-19 | High-waste treatment device and method for chlorohydrocarbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112058859A CN112058859A (en) | 2020-12-11 |
| CN112058859B true CN112058859B (en) | 2022-08-30 |
Family
ID=73662300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010838839.8A Active CN112058859B (en) | 2020-08-19 | 2020-08-19 | High-waste treatment device and method for chlorohydrocarbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112058859B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234209B (en) * | 2013-04-26 | 2015-08-19 | 清华大学 | A kind of containing chloro organic industry treatment of wastes produced device and processing method |
| CN105254469B (en) * | 2015-10-28 | 2017-03-01 | 浙江迪邦化工有限公司 | A kind of process for cleanly preparing of ethyl chloride and device |
| CN111112290B (en) * | 2019-12-20 | 2021-06-04 | 浙江巨化技术中心有限公司 | Dechlorination method for chlorinated hydrocarbon waste |
| CN111102584A (en) * | 2019-12-20 | 2020-05-05 | 浙江巨化技术中心有限公司 | Polychlorinated hydrocarbon waste treatment device and method |
| CN111036228A (en) * | 2019-12-31 | 2020-04-21 | 浙江天采云集科技股份有限公司 | Catalyst for thermal cracking hydrogen production of ammonia-containing tail gas in LED-MOCVD process and application thereof |
-
2020
- 2020-08-19 CN CN202010838839.8A patent/CN112058859B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112058859A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rathna et al. | Recent developments and prospects of dioxins and furans remediation | |
| CN105712733B (en) | Porous biological ceramsite prepared from waste incineration fly ash and biomass pyrolysis gasification residues and preparation method thereof | |
| CN109539272A (en) | The high-temperature plasma recycling recovery process of waste containing chlorine and system | |
| CN108954344B (en) | Harmless treatment method for industrial waste salt residues | |
| CN107774698B (en) | Anaerobic catalytic hot cracking system and method for waste batteries | |
| CN111006221A (en) | System and method for hazardous waste incineration | |
| CN103551358A (en) | Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system | |
| CN101461990A (en) | Method for analyzing and processing persistent organic pollutants by microwave assisted base catalysis | |
| CN111847480A (en) | Purification treatment and resource recycling method for industrial sodium chloride waste salt | |
| Li et al. | Review of thermal treatments for the degradation of dioxins in municipal solid waste incineration fly ash: Proposing a suitable method for large-scale processing | |
| CN101732822A (en) | Method for treating waste or soil polluted by heavy metal or dioxin | |
| EP2609146B1 (en) | Process for termical degradation of pvc and other wastes containing halogen-containing polymer waste | |
| CN103936253B (en) | A kind of device utilizing microwave and plasma technique in-depth process greasy filth | |
| CN111468504A (en) | Solid waste treatment apparatus and solid waste treatment method | |
| Xiu et al. | High-efficiency promotion on dechlorination of polyvinyl chloride in subcritical water treatment by introducing waste concrete | |
| CN112058859B (en) | High-waste treatment device and method for chlorohydrocarbon | |
| CN111637464A (en) | Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system and process | |
| CN110240376A (en) | A kind of oily waste thermal desorption processing system and method | |
| CN111847483B (en) | Comprehensive treatment and reuse method for industrial inorganic waste salt containing organic pollutant | |
| CN115283419B (en) | Low-temperature pyrolysis method of fly ash | |
| CN109897673B (en) | Process for harmless recycling treatment of high-salt high-COD chemical hazardous waste by using hydrothermal decomposition method | |
| CN113894136B (en) | Method for removing TOC (total organic carbon) in industrial solid waste salt | |
| CN212687871U (en) | Comprehensive utilization system for mineral oil-containing waste | |
| CN209309994U (en) | The high-temperature plasma resource utilization system of waste containing chlorine | |
| Kuo et al. | Pollution characteristics of thermal treatments for elutriated ashes. Part 2: comparison with incineration system and plasma melting system |
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 |