CN110586609A - Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic - Google Patents
Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic Download PDFInfo
- Publication number
- CN110586609A CN110586609A CN201910739428.0A CN201910739428A CN110586609A CN 110586609 A CN110586609 A CN 110586609A CN 201910739428 A CN201910739428 A CN 201910739428A CN 110586609 A CN110586609 A CN 110586609A
- Authority
- CN
- China
- Prior art keywords
- pyrolysis
- waste
- treatment process
- sintering
- sewage
- 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.)
- Pending
Links
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000005245 sintering Methods 0.000 title claims abstract description 46
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 32
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 6
- 239000010865 sewage Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 24
- 239000002906 medical waste Substances 0.000 claims abstract description 20
- 239000010815 organic waste Substances 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000010805 inorganic waste Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 41
- 239000002351 wastewater Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 21
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 20
- 238000004821 distillation Methods 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000010808 liquid waste Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims description 7
- 230000003203 everyday effect Effects 0.000 claims description 7
- 239000008188 pellet Substances 0.000 claims description 7
- 231100000719 pollutant Toxicity 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 244000144972 livestock Species 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 3
- 239000002296 pyrolytic carbon Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000012855 volatile organic compound Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 239000010802 sludge Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013037 co-molding Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- -1 pyrolysis residues Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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
- 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
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic, which comprises the following treatment steps: (1) classifying the dangerous waste entering the field; (2) treating the liquid organic waste to form sewage and organic liquid; (3) the solid/semisolid organic waste and the medical waste are treated to generate pyrolysis water, pyrolysis carbon residue and pyrolysis oil/steam; (4) solid inorganic waste is treated to form raw material balls; (5) the raw material balls are used for energy supply and manufacturing; (6) the energy center produces the collected organic liquid and pyrolysis oil/steam into fuel to supply energy and sell the fuel by self; (7) the system is used for tail gas treatment after sewage treatment. The invention greatly simplifies the dangerous waste treatment process, system equipment investment and land occupation, solves the problem difficult to solve by independent treatment in a cooperative mode, greatly reduces the dangerous waste treatment cost, realizes reclamation to the maximum extent on the premise of harmlessness, and lays a foundation for eliminating dangerous waste landfill sites.
Description
Technical Field
The invention relates to a waste treatment process, in particular to a hazardous waste treatment process with the cooperation of pyrolysis and ceramsite sintering.
Background
Along with environmental pollution, the action of garbage classification is more and more emphasized by the nation, the phenomenon of national garbage classification has appeared in the areas such as Shanghai, and after the garbage is classified, a plurality of manufacturers carry out recovery and treatment in different scales, however, after most of the garbage is treated by various devices, the effective utilization rate of energy is not ideal.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hazardous waste treatment process with the cooperation of pyrolysis and ceramsite sintering.
In order to solve the technical problems, the invention adopts the following technical scheme:
a hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic is characterized by comprising the following steps: comprises the following processing steps:
(1) the method comprises the following steps of (1) dividing the dangerous waste entering a field into: liquid organic waste, solid/semisolid organic waste, solid inorganic waste and medical waste;
(2) the liquid organic waste forms sewage and organic liquid through a liquid waste pretreatment system, the sewage enters a sewage treatment system, and the organic liquid enters an energy center;
(3) the fine crushed substances generated by the solid/semisolid organic waste through the solid/semisolid organic matter pretreatment system and the fine crushed substances generated by the medical waste through the medical waste pretreatment system generate pyrolysis water, pyrolysis carbon residue and pyrolysis oil/steam through the pyrolysis system again, the pyrolysis water enters the sewage treatment system, and the pyrolysis oil/steam enters the energy center;
(4) mixing solid inorganic waste and pyrolytic carbon slag generated by a pyrolytic system uniformly under the action of an inorganic mud and powdery material pretreatment system by taking inorganic auxiliary materials and a high-salt-content concentrated solution of a sewage treatment system as process water, and extruding the mixture into raw material balls;
(5) drying the raw material balls and feeding the dried raw material balls into a melting sintering system, feeding dried water generated in the drying process into a sewage treatment system, and making the dried raw material balls into building aggregate ceramsite in the melting sintering system;
(6) the energy center produces the collected organic liquid and pyrolysis oil/steam into fuel to supply energy and sell the fuel by self;
(7) the sewage treated by the sewage treatment system is used as water for a flue gas quenching and spraying system, and the high-salt-content concentrated solution is used as process water for granulating and batching in the melting and sintering process.
As the optimization of the technical scheme, the liquid waste pretreatment system adopts a demulsifier and micro-nano gas stripping process to realize the rapid separation of oil and water.
Preferably, the solid/semisolid organic matter pretreatment system comprises classification, crushing and mixing, wherein solid/semisolid organic waste is subjected to multistage crushing, and massive distillation residues are crushed and then mixed with pasty and viscous liquid organic matters to form a mixture with proper dryness and wetness and certain discreteness for a pyrolysis system; mixing the organic flaky fine powder with the particle size of less than 100mm with the dry powder mixture to obtain the livestock material.
Preferably, the medical waste pretreatment system is used for crushing medical wastes in multiple stages, crushing the medical wastes in a closed system into fine crushed materials with the particle size of less than 100mm, and sealing and storing the crushed materials.
Preferably, after the green pellets are cooled by high-humidity gas of a dryer to collect moisture, most of the green pellets enter a heat exchange system, are heated and then circularly enter the dryer, and finally enter a melting sintering system, and a small part of the green pellets enter a gas hot blast stove in a pyrolysis system.
Preferably, in the above technical solution, the melt sintering system places the green pellets into a rotary kiln for melt sintering to achieve stabilization of heavy metals, the heat of the dryer is provided by the residual heat of hot air in the melt sintering process, and the fuel required in the melt sintering process is provided by an energy center.
Preferably, the sewage to be treated by the sewage treatment system comprises sewage discharged by the liquid waste pretreatment system, initial rainwater, deacidification tower, saline wastewater discharged every day by VOCs system tail gas treatment, laboratory wastewater, pyrolysis water generated every day by a pyrolysis system, raw material ball drying wastewater, domestic sewage and workshop flushing wastewater.
Preferably, the energy center adopts an organic liquid reduced pressure distillation treatment process and a noncondensable gas purification buffer treatment process to respectively purify the collected organic liquid and pyrolysis oil/gas.
Preferably, in the above technical solution, the noncondensable gas purification and cache treatment process is to remove pollutants such as sulfur, chlorine, fluorine and the like in the pyrolysis oil/gas and then return the removed pollutants to the pyrolysis system for use as fuel.
Preferably, in the organic liquid vacuum distillation treatment process, the vacuum distillation mode is adopted, and the removal effect of inorganic impurities is improved under the condition of further reducing the distillation temperature.
The invention has the beneficial effects that:
1. solid/semisolid organic waste is synergistically isolated from air thermal decomposition at low temperature, so that energy conversion of organic hazardous waste under low discharge condition and harmlessness of inorganic substances such as metal contained in the organic hazardous waste are realized, pyrolysis gas and pyrolysis oil generated after pyrolysis are used as system energy, and the waste treatment cost is reduced; the hazardous slag is separated into massive harmless metal and massive inorganic inert substances through separation, the metal can be directly recycled, and the inorganic substances are harmless and can be used for treating construction waste; the residual carbon-containing powder enters an inorganic waste granulation system, and salt-containing wastewater is consumed synergistically by utilizing the characteristics of low water content and carbon content, so that the energy consumption of melting is reduced;
2. inorganic wastes such as inorganic muddy, powdery and liquid hazardous wastes, pyrolysis residues, sludge in a sewage treatment process, fly ash in a tail gas treatment and dust collection process are subjected to co-molding granulation, and harmless treatment and resource utilization are realized in a high-temperature melting ceramic sintering mode;
3. multiple kinds of waste water related to hazardous waste and hazardous waste treatment, such as emulsified waste liquid, organic hazardous waste pyrolysis waste water, inorganic hazardous waste drying waste water, flue gas treatment waste water, hazardous waste treatment workshop flushing waste water and the like, are put together for cooperative treatment, so that the repeated investment of different waste water treatment systems is avoided;
4. through material cooperativity between materials with different forms and water contents in inorganic matter treatment and saline wastewater which is difficult to treat in the sewage treatment process, the comprehensive treatment cost is reduced, the treatment problem of certain residues generated in the single waste treatment process is solved, the consumption of sludge and the high-saline wastewater is solved in the inorganic matter melting process, and the wastewater treatment cost is reduced;
5. the energy center is with the collaborative means of system's energy, through the pyrolysis not acid gas of condensation desorption and tar become clean general energy, can be used to pyrolysis and electricity generation, the organic liquid of collection, pyrolysis oil then through the distillation treatment, desorption heavy metal impurity, supply the system to use after the electricity generation, not only solved the material to go, still reduced the system energy consumption.
Drawings
FIG. 1 is a flow chart of a hazardous waste treatment process with pyrolysis and ceramsite sintering in coordination.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, a hazardous waste treatment process with pyrolysis and ceramsite sintering cooperated comprises the following treatment steps:
(1) the method comprises the following steps of (1) dividing the dangerous waste entering a field into: liquid organic waste, solid/semisolid organic waste, solid inorganic waste and medical waste;
(2) the liquid organic waste forms sewage and organic liquid through a liquid waste pretreatment system, the sewage enters a sewage treatment system, and the organic liquid enters an energy center;
(3) the fine crushed substances generated by the solid/semisolid organic waste through the solid/semisolid organic matter pretreatment system and the fine crushed substances generated by the medical waste through the medical waste pretreatment system generate pyrolysis water, pyrolysis carbon residue and pyrolysis oil/steam through the pyrolysis system again, the pyrolysis water enters the sewage treatment system, and the pyrolysis oil/steam enters the energy center;
(4) according to the content of oxides such as silicon oxide, calcium oxide, aluminum oxide and the like in the mixture, inorganic auxiliary materials and a high-salt-content concentrated solution of a sewage treatment system are matched to serve as process water, and the solid inorganic waste and the pyrolytic carbon slag generated by the pyrolysis system are uniformly mixed under the action of an inorganic mud and powdery material pretreatment system and then extruded into raw material balls;
(5) drying the raw material balls and feeding the dried raw material balls into a melting sintering system, feeding dried water generated in the drying process into a sewage treatment system, and making the dried raw material balls into building aggregate ceramsite in the melting sintering system;
(6) the energy center produces the collected organic liquid and pyrolysis oil/steam into fuel to supply energy and sell the fuel by self;
(7) the sewage treated by the sewage treatment system is used as water for a flue gas quenching and spraying system, and the high-salt-content concentrated solution is used as process water for granulating and batching in the melting and sintering process.
The liquid waste pretreatment system adopts a demulsifier and micro-nano gas stripping process to realize the rapid separation of oil and water; the solid/semisolid organic matter pretreatment system comprises classification, crushing and mixing, wherein solid/semisolid organic waste is subjected to multistage crushing, massive and massive distillation residues are crushed and then mixed with pasty and viscous liquid organic matters to form a mixture with proper dryness and wetness and certain discreteness for a pyrolysis system, and when powdery materials are insufficient, the mixture is supplemented by pyrolysis carbon powder; mixing organic flaky fine crushed materials with the particle size of less than 100mm with the dry and scattered mixture to prepare livestock materials with the low calorific value of about 2500kcal/kg and the water content of about 25%; the medical waste pretreatment system is designed according to the national standard of a separately designed pretreatment system, and is used for crushing medical wastes in multiple stages, crushing the medical wastes into fine crushed materials with the particle size of less than 100mm in a closed system, and sealing and storing the materials.
Raw material balls are firstly cooled by high-humidity gas of a dryer to collect moisture, most raw material balls enter a heat exchange system, circularly enter the dryer after being heated, are dried by the dryer to reach the moisture content of below 5 percent and enter a melting sintering system, and a small part of raw material balls enter a gas hot blast stove in a pyrolysis system, wherein fuel of the gas hot blast stove is pyrolysis noncondensable gas purified in the pyrolysis process, the gas amount only accounts for 8 percent of inorganic solid waste entering the stove and is gas, so that tail gas emission is less than 10 percent of flux hazardous waste incineration, and the pollutant content can reach the ultralow emission level; the melt sintering system is used for putting the dried raw material balls into a split rotary kiln for melt sintering at the temperature of about 1200 ℃, so that heavy metal, silicon dioxide, aluminum oxide and the like form an oxide mutual transmission network structure, the stabilization of the heavy metal is realized, and the harmless leaching effect is achieved; the heat of the dryer is provided by the hot air waste heat in the melting and sintering process, the process of drying raw material balls by using the waste heat in the sintering process adopts the process design of gas semi-closed loop circulation to reduce the processing burden of system tail gas and reduce pollution emission, the low-temperature moisture discharged from the dryer is cooled to remove the moisture of carried materials and then is sent to a sewage treatment system for processing and then is used as cooling circulating water, most of the gas after being removed is sent to a heat exchanger for rapidly cooling the sintering furnace flue gas to cool the sintering furnace flue gas, and the temperature of the gas is increased to become secondary hot air which is sent to the dryer to dry the raw material balls; meanwhile, a part of the air is led out to be used as sintering furnace fuel gas and combusted for air distribution, and the whole drying system is not provided with a discharge port.
The sewage to be treated by the sewage treatment system comprises sewage discharged by the liquid waste pretreatment system, initial rainwater, a deacidification tower, salt-containing wastewater discharged every day by VOCs system tail gas treatment, laboratory wastewater, pyrolysis water generated every day by a pyrolysis system, raw material ball drying wastewater, domestic sewage and workshop flushing wastewater; pyrolysis wastewater and dry wastewater are treated to reach the circulating water recycling standard and are used for supplementing water to cooling circulating water of a pyrolysis furnace; the domestic sewage is treated as water for plant greening; mixing the sewage after the pretreatment of the waste emulsion with other sewage to form a class; the concentrated solution of the system water treatment is completely consumed by the system, the sludge enters the electric melting ingredient, and no sludge and waste water are discharged.
The energy center receiving fuel includes: the energy center adopts an organic liquid reduced pressure distillation treatment process and a noncondensable gas purification caching treatment process to respectively purify collected organic liquid and pyrolysis oil/gas; the purification treatment of the noncondensable gas mainly comprises the steps of removing pollutants such as sulfur, chlorine, fluorine and the like in the pyrolysis noncondensable gas and tar, then compressing and storing the pollutants in a gas holder, and finally returning the pollutants to a pyrolysis system to be used as fuel; the reduced pressure distillation treatment process of the organic liquid utilizes the low boiling point and volatile property of organic matters, improves the removal effect of inorganic impurities by adopting a reduced pressure distillation mode under the condition of further reducing the distillation temperature (the final distillation temperature is controlled below 300 ℃), ensures that the distillation product reaches the standard of national standard fuel oil, is designed as a continuous process for reducing energy consumption, discharges distillation residues while hot, and enters a pyrolysis system for treatment after cooling without discharging; in addition, oil contained in the distillation residues is recycled for the second time in the pyrolysis furnace, the residues enter pyrolysis carbon, and no other solid waste is discharged out of the energy center; the tail gas containing combustible gas after oil/gas condensation is introduced into a hot blast stove of the pyrolysis furnace for combustion, and an oil gas treatment facility is not required to be arranged in an energy center.
Compared with the existing design of the treatment system for various wastes, the treatment process for the hazardous wastes is greatly simplified, the equipment investment and the land occupation of the system are greatly reduced, the problems which are difficult to solve by independent treatment, such as sludge treatment, high-salt-content wastewater, pyrolysis residue, direction of harmless medical wastes and the like, are solved in a synergistic mode, the treatment cost of the hazardous wastes is greatly reduced, the recycling is realized to the maximum extent on the premise of harmlessness, and a foundation is laid for eliminating hazardous waste landfill sites.
Claims (10)
1. A hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic is characterized by comprising the following steps: comprises the following processing steps:
(1) the method comprises the following steps of (1) dividing the dangerous waste entering a field into: liquid organic waste, solid/semisolid organic waste, solid inorganic waste and medical waste;
(2) the liquid organic waste forms sewage and organic liquid through a liquid waste pretreatment system, the sewage enters a sewage treatment system, and the organic liquid enters an energy center;
(3) the fine crushed substances generated by the solid/semisolid organic waste through the solid/semisolid organic matter pretreatment system and the fine crushed substances generated by the medical waste through the medical waste pretreatment system generate pyrolysis water, pyrolysis carbon residue and pyrolysis oil/steam through the pyrolysis system again, the pyrolysis water enters the sewage treatment system, and the pyrolysis oil/steam enters the energy center;
(4) mixing solid inorganic waste and pyrolytic carbon slag generated by a pyrolytic system uniformly under the action of an inorganic mud and powdery material pretreatment system by taking inorganic auxiliary materials and a high-salt-content concentrated solution of a sewage treatment system as process water, and extruding the mixture into raw material balls;
(5) drying the raw material balls and feeding the dried raw material balls into a melting sintering system, feeding dried water generated in the drying process into a sewage treatment system, and making the dried raw material balls into building aggregate ceramsite in the melting sintering system;
(6) the energy center produces the collected organic liquid and pyrolysis oil/steam into fuel to supply energy and sell the fuel by self;
(7) the sewage treated by the sewage treatment system is used as water for a flue gas quenching and spraying system, and the high-salt-content concentrated solution is used as process water for granulating and batching in the melting and sintering process.
2. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: the liquid waste pretreatment system adopts a demulsifier and micro-nano air stripping process to realize the rapid separation of oil and water.
3. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: the solid/semisolid organic matter pretreatment system comprises classification, crushing and mixing, wherein solid/semisolid organic waste is subjected to multistage crushing, and massive distillation residues are crushed and then mixed with pasty and viscous liquid organic matters to form a mixture with proper dryness and wetness and certain discreteness and used for a pyrolysis system; mixing the organic flaky fine powder with the particle size of less than 100mm with the dry powder mixture to obtain the livestock material.
4. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: the medical waste pretreatment system is used for crushing medical wastes in multiple stages, crushing the medical wastes into fine crushed materials with the particle size of less than 100mm in a closed system, and sealing and storing the fine crushed materials.
5. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: after the green pellets are cooled by high-humidity gas of a dryer to collect moisture, most of the green pellets enter a heat exchange system firstly, circularly enter the dryer after being heated, finally enter a melting sintering system, and a small part of the green pellets enter a gas hot blast stove in a pyrolysis system.
6. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 5, is characterized in that: the melting sintering system adopts the technical scheme that raw material balls are placed in a rotary kiln for melting sintering, so that the stabilization of heavy metals is realized, the heat of the dryer is provided by hot air waste heat in the melting sintering process, and fuel required in the melting sintering process is provided by an energy center.
7. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: the sewage to be treated by the sewage treatment system comprises sewage discharged by a liquid waste pretreatment system, initial rainwater, a deacidification tower and VOCs system tail gas, wherein the saline wastewater discharged every day, laboratory wastewater, pyrolysis water generated by a pyrolysis system every day, drying wastewater of raw material balls, domestic sewage and workshop flushing wastewater are treated by the pyrolysis system every day.
8. The hazardous waste treatment process based on the synergy of pyrolysis and ceramsite sintering, according to claim 1, is characterized in that: the energy center adopts an organic liquid reduced pressure distillation treatment process and a noncondensable gas purification caching treatment process to respectively purify the collected organic liquid and pyrolysis oil/gas.
9. The hazardous waste treatment process based on the cooperation of pyrolysis and ceramsite sintering according to claim 8, wherein the hazardous waste treatment process comprises the following steps: the noncondensable gas purification caching treatment process is to remove pollutants such as sulfur, chlorine, fluorine and the like in pyrolysis oil/gas and then return the pyrolysis oil/gas to a pyrolysis system for use as fuel.
10. The hazardous waste treatment process based on the cooperation of pyrolysis and ceramsite sintering according to claim 8, wherein the hazardous waste treatment process comprises the following steps: the organic liquid reduced pressure distillation treatment process adopts a reduced pressure distillation mode to improve the removal effect of inorganic impurities under the condition of further reducing the distillation temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739428.0A CN110586609A (en) | 2019-08-12 | 2019-08-12 | Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739428.0A CN110586609A (en) | 2019-08-12 | 2019-08-12 | Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110586609A true CN110586609A (en) | 2019-12-20 |
Family
ID=68853990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910739428.0A Pending CN110586609A (en) | 2019-08-12 | 2019-08-12 | Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110586609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221337A1 (en) * | 2022-05-20 | 2023-11-23 | 中冶长天国际工程有限责任公司 | Method and system for co-processing hazardous waste by rotary kiln and sintering machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899349A (en) * | 2010-07-27 | 2010-12-01 | 昆明理工大学 | Method for preparing solid renewable clean fuel from agricultural and forestry waste/domestic garbage |
| CN101898899A (en) * | 2010-03-22 | 2010-12-01 | 深圳市兖能环保科技有限公司 | Method and process for producing swelling ceramsite from sludge generated in process of sewage treatment |
| CN102875003A (en) * | 2012-11-05 | 2013-01-16 | 天津城市建设学院 | Integrated technology of thermal decomposing, dry distilling and gasifying sludge and preparing of ceramsite |
| CN103601526A (en) * | 2013-12-02 | 2014-02-26 | 天津城建大学 | Method for microwave firing of porous ceramsites by adopting medical waste incineration fly ash |
| CN104818064A (en) * | 2015-05-07 | 2015-08-05 | 齐元峰 | Synchronous recycling method with high-calorific-value dangerous waste and municipal solid waste |
| CN106077024A (en) * | 2016-06-16 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | Process the system and method for house refuse |
| CN106077025A (en) * | 2016-06-16 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | Process the system and method for house refuse |
| CN107234122A (en) * | 2017-05-15 | 2017-10-10 | 于继林 | A kind of resource recycling of house refuse manufacture haydite utilizes production technology |
| CN108410505A (en) * | 2018-04-04 | 2018-08-17 | 绍兴化工有限公司 | A method of preparing water-gas using organic dangerous waste |
-
2019
- 2019-08-12 CN CN201910739428.0A patent/CN110586609A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898899A (en) * | 2010-03-22 | 2010-12-01 | 深圳市兖能环保科技有限公司 | Method and process for producing swelling ceramsite from sludge generated in process of sewage treatment |
| CN101899349A (en) * | 2010-07-27 | 2010-12-01 | 昆明理工大学 | Method for preparing solid renewable clean fuel from agricultural and forestry waste/domestic garbage |
| CN102875003A (en) * | 2012-11-05 | 2013-01-16 | 天津城市建设学院 | Integrated technology of thermal decomposing, dry distilling and gasifying sludge and preparing of ceramsite |
| CN103601526A (en) * | 2013-12-02 | 2014-02-26 | 天津城建大学 | Method for microwave firing of porous ceramsites by adopting medical waste incineration fly ash |
| CN104818064A (en) * | 2015-05-07 | 2015-08-05 | 齐元峰 | Synchronous recycling method with high-calorific-value dangerous waste and municipal solid waste |
| CN106077024A (en) * | 2016-06-16 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | Process the system and method for house refuse |
| CN106077025A (en) * | 2016-06-16 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | Process the system and method for house refuse |
| CN107234122A (en) * | 2017-05-15 | 2017-10-10 | 于继林 | A kind of resource recycling of house refuse manufacture haydite utilizes production technology |
| CN108410505A (en) * | 2018-04-04 | 2018-08-17 | 绍兴化工有限公司 | A method of preparing water-gas using organic dangerous waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221337A1 (en) * | 2022-05-20 | 2023-11-23 | 中冶长天国际工程有限责任公司 | Method and system for co-processing hazardous waste by rotary kiln and sintering machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2741936C1 (en) | Method and device for co-combustion of wastes and semi-dry waste sludge | |
| WO2022061958A1 (en) | Harmless and resourceful integrated treatment method and system for oil sludge | |
| CN203991628U (en) | A kind for the treatment of apparatus that efficiently utilizes MSW heating value | |
| CN105366896A (en) | Device and process for sludge gasification melting circular treatment | |
| CN104211274A (en) | Sludge reduction and recycling treatment device and sludge treatment method | |
| CN108840544B (en) | Industrial sludge recycling treatment method | |
| CN203513455U (en) | Sludge drying and incineration system | |
| WO2019050431A1 (en) | Method for utilizing solid carbon-containing waste by pyrolysis and waste processing complex for implementing same | |
| CN111100719A (en) | Preparation method of water-washed fly ash derived fuel | |
| WO2016091169A1 (en) | Method and apparatus for disposing organic refuse | |
| CN104628237A (en) | Sludge drying incineration system based on thermal power plant | |
| CN109574443A (en) | A kind of process system using self- propagating pyrolytic incineration disposition oily sludge | |
| CN101628792B (en) | Method for processing municipal solid waste by using shaft kiln cement production line | |
| CN206051812U (en) | A kind of mercury-containing sludge annealing device | |
| CN113121082A (en) | Device and method for resource utilization and harmless treatment of oily sludge | |
| CN107129816A (en) | A kind of house refuse cracking treatment process | |
| CN108728140B (en) | Organic hazardous waste low-temperature pyrolysis power generation system | |
| CN110586616A (en) | Efficient inhibition method for dioxin regeneration in fly ash high-temperature thermal treatment process | |
| CN102173553B (en) | Method for drying and processing sludge by use of cement production waste gas | |
| CN1772662A (en) | Simultaneous sludge method during cement production | |
| CN110586609A (en) | Hazardous waste treatment process with pyrolysis and ceramsite sintering synergistic | |
| CN206279174U (en) | Skid-mounted type greasy filth pyrolysis treatment systems | |
| CN110563081A (en) | Hazardous waste treatment process with pyrolysis and electric melting cooperation | |
| CN210035511U (en) | System for generating power by drying and granulating sludge and incinerating garbage in cooperation in grate furnace | |
| CN111362551A (en) | Two-stage sludge drying and incinerating system of coal-fired power plant and operation method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
|
| RJ01 | Rejection of invention patent application after publication |