CN105647556A - Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag - Google Patents
Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag Download PDFInfo
- Publication number
- CN105647556A CN105647556A CN201610035266.9A CN201610035266A CN105647556A CN 105647556 A CN105647556 A CN 105647556A CN 201610035266 A CN201610035266 A CN 201610035266A CN 105647556 A CN105647556 A CN 105647556A
- Authority
- CN
- China
- Prior art keywords
- slag
- blast furnace
- plastics
- chromium slag
- chromium
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 119
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000011651 chromium Substances 0.000 title claims abstract description 87
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 82
- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000002918 waste heat Substances 0.000 title claims description 8
- 238000005516 engineering process Methods 0.000 title description 6
- 238000004064 recycling Methods 0.000 title 1
- 230000001360 synchronised effect Effects 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 49
- 239000000498 cooling water Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 12
- 238000001833 catalytic reforming Methods 0.000 claims description 10
- 238000000197 pyrolysis Methods 0.000 claims description 10
- 239000008246 gaseous mixture Substances 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 210000000952 spleen Anatomy 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 229910000514 dolomite Inorganic materials 0.000 claims 1
- 239000010459 dolomite Substances 0.000 claims 1
- 239000011943 nanocatalyst Substances 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 239000002920 hazardous waste Substances 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004939 coking Methods 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 231100000419 toxicity Toxicity 0.000 description 4
- 230000001988 toxicity Effects 0.000 description 4
- 231100000614 poison Toxicity 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000003440 toxic substance 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
-
- 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
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
-
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/16—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with moving solid heat-carriers in divided form
-
- 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
-
- 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
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for synchronously treating liquid blast furnace slag, chromium slag and plastics, which heats and gasifies the plastics by the blast furnace slag, and then utilizes catalysts such as hazardous waste chromium slag and the like to catalyze and crack the plastics at high temperature, so that the plastics are more thoroughly converted into low-molecular high-temperature energy gas under the condition of steam gasification, and the coking on the surface of the chromium slag is avoided. Meanwhile, the high-temperature energy gas is used for heating the chromium slag, hexavalent chromium in the chromium slag is reduced to trivalent chromium, the energy gas is cooled by the way, and CO2 and Cl in the energy gas are absorbed by alkaline substances in the chromium slag. The process greatly saves energy and obtains high-grade energy gas while harmless chromium slag and cooling blast furnace slag.
Description
Technical field
The present invention is synchronization process chromium slag and plastics and the method cooling down blast furnace slag, innoxious chromium slag, obtain high-grade energy gas while, be greatly saved the energy, simultaneously. Belong to environmental conservation and low-carbon technology field.
Background technology
Chromium slag is the by-product of discharge in bichromate production process. Having great toxicity because wherein containing water soluble hexavalent chromium, if the air storage without process, underground water source, river or marine site can be caused pollution in various degree, serious is detrimental to health and vegeto-animal growth.
On the whole, the detoxification (Cr VI high by toxicity becomes trivalent chromium) of current chromium slag is divided into wet method detoxifcation and dry detoxified two big classes. But there is respective problem. Wet method is to add reducing agent by Cr in chromium slag by passing through6+Method in liquid-phase reduction removing toxic substances. But this method reagent consumption is big, cost is high, is also difficult to extensive for administering chromium slag at present. Dry detoxified is make hexavalent chrome reduction in chromium slag be the purpose that trivalent chromium reaches removing toxic substances by the strong reducing action of high-temperature reductibility atmosphere. Traditional dry treatment is to make reducing agent with carbon, heats to about 1000 DEG C poisonous Cr in restoring property atmosphere6+It is reduced into nontoxic Cr6 +, this method large-scale application, in the improvement of chromium slag, has certain economic benefit, but pollutes with secondary dust in processing procedure, and cost of investment is high, and energy consumption is big.
Plastics are a kind of white pollutions. Its processing method there is also various problem at present. Because it is containing Cl, therefore burns and easily produce dioxin. Pyrolysis made fuel oil, gas are a kind of at present comparatively practical ways, and application number 2011103660279 discloses a kind of two-step method and utilizes plastics to prepare the way of fuel oil gas, and the first step is volatilized HCl at low temperature, and oil gas prepared by second step cracking plastics. Though the method is comparatively practical, but owing to carrying out two-step method, reaction time is long. In this external engineering construction, HCl is not easy to volatilize completely, and the Cl of part residual is easily accessible in the cracking oil gas of second step thus it is polluted.
Additionally, China produces substantial amounts of blast furnace slag every year, liquid blast furnace temperature is high, temperature 1500-1700 DEG C, if the good good utilisation of energy, will be valuable resource. But seldom there is technology effectively to be utilized by heat energy therein at present.
Summary of the invention
For the deficiencies in the prior art, the present invention is the process method of disposal of a kind of novel chromium slag, plastics and liquid blast furnace.Pass through technology controlling and process, it is possible to effectively cooled down by liquid blast furnace and effectively utilized by its heat energy, be high-quality energy gas by converting-plastics simultaneously, and by while in chromium slag, Cr VI efficiently reduces.
This process technology scheme is: heat liquid blast furnace and gasify plastics and cooling water, plastic cracking gas is cracked followed by hazardous waste chromium slag high-temperature catalytic, it it is low molecular high temperature energy gas (H2, CO and CH4 etc.) by converting-plastics comparatively thoroughly when steam gasification, it is to avoid the coking on chromium slag surface. And chromium slag is heated by the high temperature energy gas that plastics produce simultaneously, make hexavalent chrome reduction in chromium slag is trivalent chromium simultaneously, allows low temperature chromium slag that energy gas is cooled down in passing, and Cl and CO2 in energy gas is absorbed by the alkaline matter in chromium slag. This technique, while innoxious chromium slag, is greatly saved the energy, obtains high-grade energy gas simultaneously.
The method of the present invention specifically includes following steps:
(1) liquid blast furnace of temperature 1500-1700 DEG C is poured onto wheeled setting gauge arrival end by slag ladle, through quantitative material toggling and preliminary broken after, cylinder smashing device porch is entered from the port of export, mix with plastics, and by plastics pyrolysis, blast furnace slag and plastics pyrolysis coke transport to the cylinder smashing device port of export subsequently, and cooled water-cooled is but discharged afterwards; The continuous input quality of cooling water and the blast furnace slag of cooling blast furnace slag ratio is for 1:(1-8); The continuous input quality of plastics and blast furnace slag is than for 1:(1-8);
(2) the cooling water in step (1) adds from the cylinder smashing device port of export, and spray is heated to blast furnace slag surface and is converted into steam; Steam subsequently with blast furnace slag reverse flow heat exchange, transport to cylinder smashing device arrival end and vent one's spleen with plastic hot and mix; Gaseous mixture is transported to wheeled setting gauge subsequently and is carried out heat exchange with high temperature blast furnace slag, is converted into the high-temperature gas mixture of 1000-1400 DEG C;
(3) gaseous mixture in step (2) is transported to catalytic reforming furnace, chromium slag after load calcining in stove, the chromium slag of mixing gas heating the inside carries out catalytic reforming within the scope of 800-1200 DEG C, generates energy gas;
(4) the high temperature energy gas generated in step (3) subsequently inputs in internal heat type rotary kiln end, continues, with kiln WEILIAN, the chromium slag carrying and carries out heat exchange process, and hexavalent chrome reduction in chromium slag is trivalent chromium by energy gas simultaneously; High temperature energy gas temperature is reduced to after below 250 DEG C, discharges from rotary kiln, enters condensing unit, and cooling water reverse flow indirect heat exchange occurs, and collects after condensation dehydration; High temperature chromium slag after heat exchange is discharged from rotary kiln end, enters chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously; The mass ratio of the high temperature energy gas continuously generated and continuously the chromium slag of input controls at (1-8): 4;
(5) in step (4), high temperature chromium slag after heat exchange is discharged from rotary kiln end, enter chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously;
Comparing traditional plastic processing methods, this method has following advantage:
1. utilize high-temperature liquid state blast furnace slag to heat and gasify plastics and cooling water, produce plastic cracking product and steam, prepare high-quality energy gas for pyrolysis product catalysis and create conditions; Take full advantage of heat energy simultaneously, substantially increase energy efficiency;
2. utilize chromium slag hazardous waste chromium slag catalysis plastics, it is to avoid while using expensive catalyst, also achieve the innoxious of chromium slag;
3., because of the effect of high-temperature steam so that chromium slag is after reduction treatment, and surface coke content greatly reduces, be conducive to the secondary of chromium slag after processing to utilize;
4. after utilizing catalytic reforming, produced high temperature energy gas heating innoxious chromium slag, saved the equipment of extra cooling down high-temperature gas simultaneously;
5. take full advantage of the water vapour that each stage of technique produces, produce steam without extra heat source auxiliary, be conducive to energy-conservation, decrease the discharge of steam simultaneously, it is to avoid second heat pollution;
6. the by-product CO2 etc. generated in the energy gas that plastics catalytic pyrolysis produces can be absorbed by alkaline matters such as the CaO in chromium slag, improves fuel product quality;
7. chromium slag cooling device utilizes cooling water-cooled but chromium slag, while producing steam, and aggrandizement apparatus air pressure inside, stop extraneous air to enter system, the trivalent chromium after oxidoreduction, avoid simultaneously and use extra device to control air pressure.
Accompanying drawing explanation
Fig. 1 is process chart
Fig. 2 is liquid blast furnace poking device and smashing device
Wherein 1 liquid Ge Zha import department; 2 mixed gas outlets; 3 cooling water inlets place; 4 plastic inlet places; 5 wheeled setting gauges; 6 blast furnace slag exits; 7 cylinder smashing devices; 8 wheeled setting gauges and cylinder smashing device connector; 9 gears.
It is embodied as example as follows:
(1) liquid blast furnace of temperature 1500-1700 DEG C is poured onto wheeled setting gauge arrival end by slag ladle, through quantitative material toggling and preliminary broken after, cylinder smashing device porch is entered from the port of export, mix with plastics, and by plastics pyrolysis, blast furnace slag and plastics pyrolysis coke transport to the cylinder smashing device port of export subsequently, and cooled water-cooled is but discharged afterwards; The continuous input quality of cooling water and the blast furnace slag of cooling blast furnace slag ratio is for 1:2; The continuous input quality of plastics and blast furnace slag is than for 1:2;
(2) the cooling water in step (1) adds from the cylinder smashing device port of export, and spray is heated to blast furnace slag surface and is converted into steam; Steam subsequently with blast furnace slag reverse flow heat exchange, transport to cylinder smashing device arrival end and vent one's spleen with plastic hot and mix; Gaseous mixture is transported to wheeled setting gauge subsequently and is carried out heat exchange with high temperature blast furnace slag, is converted into the high-temperature gas mixture of 1000 DEG C;
(3) gaseous mixture in step (2) is transported to catalytic reforming furnace, chromium slag after load calcining in stove, the chromium slag of mixing gas heating the inside carries out catalytic reforming within the scope of 800 DEG C, generates energy gas;
(4) the high temperature energy gas generated in step (3) subsequently inputs in internal heat type rotary kiln end, continues, with kiln WEILIAN, the chromium slag carrying and carries out heat exchange process, and hexavalent chrome reduction in chromium slag is trivalent chromium by energy gas simultaneously; High temperature energy gas temperature is reduced to after below 250 DEG C, discharges from rotary kiln, enters condensing unit, and cooling water reverse flow indirect heat exchange occurs, and collects after condensation dehydration; High temperature chromium slag after heat exchange is discharged from rotary kiln end, enters chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously; The mass ratio of the high temperature energy gas continuously generated and continuously the chromium slag of input controls at 2:1;
(5) in step (4), high temperature chromium slag after heat exchange is discharged from rotary kiln end, enter chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously;
(6) using GB GB5086.2 horizontal vibration method that chromium slag after processing is carried out toxicity characteristic leaching procedure, recording water soluble chromium is 0.01mg/L, is significantly less than GB GB5085.3 hazardous waste upper limit 1.5mg/L; Plastics per ton produce 0.6-0.7t energy gas, and combustible gas content is higher than 80%.
Example 2:
(1) liquid blast furnace of temperature 1500-1700 DEG C is poured onto wheeled setting gauge arrival end by slag ladle, through quantitative material toggling and preliminary broken after, cylinder smashing device porch is entered from the port of export, mix with plastics, and by plastics pyrolysis, blast furnace slag and plastics pyrolysis coke transport to the cylinder smashing device port of export subsequently, and cooled water-cooled is but discharged afterwards; The continuous input quality of cooling water and the blast furnace slag of cooling blast furnace slag ratio is for 1:4; The continuous input quality of plastics and blast furnace slag is than for 1:2;
(2) the cooling water in step (1) adds from the cylinder smashing device port of export, and spray is heated to blast furnace slag surface and is converted into steam; Steam subsequently with blast furnace slag reverse flow heat exchange, transport to cylinder smashing device arrival end and vent one's spleen with plastic hot and mix; Gaseous mixture is transported to wheeled setting gauge subsequently and is carried out heat exchange with high temperature blast furnace slag, is converted into the high-temperature gas mixture of 1400 DEG C;
(3) gaseous mixture in step (2) is transported to catalytic reforming furnace, chromium slag after load calcining in stove, the chromium slag of mixing gas heating the inside carries out catalytic reforming within the scope of 800 DEG C, generates energy gas;
(4) the high temperature energy gas generated in step (3) subsequently inputs in internal heat type rotary kiln end, continues, with kiln WEILIAN, the chromium slag carrying and carries out heat exchange process, and hexavalent chrome reduction in chromium slag is trivalent chromium by energy gas simultaneously; High temperature energy gas temperature is reduced to after below 250 DEG C, discharges from rotary kiln, enters condensing unit, and cooling water reverse flow indirect heat exchange occurs, and collects after condensation dehydration; High temperature chromium slag after heat exchange is discharged from rotary kiln end, enters chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously; The mass ratio of the high temperature energy gas continuously generated and continuously the chromium slag of input controls at 1:1;
(5) in step (4), high temperature chromium slag after heat exchange is discharged from rotary kiln end, enter chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously;
(6) using GB GB5086.2 horizontal vibration method that chromium slag after processing is carried out toxicity characteristic leaching procedure, recording water soluble chromium is 0.01mg/L, is significantly less than GB GB5085.3 hazardous waste upper limit 1.5mg/L; Plastics per ton produce 0.6-0.7t energy gas, and combustible gas content is higher than 80%.
Above example is only in order to illustrate technical scheme, but not is limited; Although the present invention being described in detail with reference to previous embodiment, for the person of ordinary skill of the art, still the technical scheme described in previous embodiment can be modified, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of present invention technical scheme required for protection.
Claims (6)
1. the simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag, it is characterised in that comprise the steps:
(1) liquid blast furnace of temperature 1500-1700 DEG C is poured onto wheeled setting gauge arrival end by slag ladle, through quantitative material toggling and preliminary broken after, cylinder smashing device porch is entered from the port of export, mix with plastics, and by plastics pyrolysis, blast furnace slag and plastics pyrolysis coke transport to the cylinder smashing device port of export subsequently, and cooled water-cooled is but discharged afterwards;
(2) the cooling water in step (1) adds from the cylinder smashing device port of export, and spray is heated to blast furnace slag surface and is converted into steam; Steam subsequently with blast furnace slag reverse flow heat exchange, transport to cylinder smashing device arrival end and vent one's spleen with plastic hot and mix; Gaseous mixture is transported to wheeled setting gauge subsequently and is carried out heat exchange with high temperature blast furnace slag, is converted into the high-temperature gas mixture of 1000-1400 DEG C;
(3) gaseous mixture in step (2) is transported to catalytic reforming furnace, chromium slag after load calcining in stove, the chromium slag of mixing gas heating the inside carries out catalytic reforming within the scope of 800-1200 DEG C, generates energy gas;
(4) the high temperature energy gas generated in step (3) subsequently inputs in internal heat type rotary kiln end, continues, with kiln WEILIAN, the chromium slag carrying and carries out heat exchange process, and hexavalent chrome reduction in chromium slag is trivalent chromium by energy gas simultaneously; High temperature energy gas temperature is reduced to after below 250 DEG C, discharges from rotary kiln, enters condensing unit, and cooling water reverse flow indirect heat exchange occurs, and collects after condensation dehydration;
(5) in step (4), high temperature chromium slag after heat exchange is discharged from rotary kiln end, enter chiller, discharge after using cooling water to be cooled to less than 150 DEG C, utilizes produced steam to control chiller air pressure inside higher than outdoor air pressure 0-30kp simultaneously.
2. a kind of simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag according to claim 1, it is characterised in that the continuous input quality of cooling water and the blast furnace slag of cooling blast furnace slag ratio is for 1:(1-8).
3. a kind of simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag according to claim 1, it is characterised in that the continuous input quality of plastics and blast furnace slag is than for 1:(1-8).
4. a kind of simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag according to claim 1, it is characterised in that the mass ratio of the high temperature energy gas continuously generated and continuously the chromium slag of input controls at (1-8): 4.
5. a kind of simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag according to claim 1, it is characterised in that the cooling water of cooling blast furnace slag controls at (0.2-5) with the continuous input quality ratio of plastics: 1.
6. a kind of simultaneous techniques utilizing blast furnace slag waste heat resource plastics and innoxious chromium slag according to claim 1, it is characterised in that the chromium slag of load in catalytic reforming furnace can be substituted by dolomite, Al2O3 base nano catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035266.9A CN105647556B (en) | 2016-01-19 | 2016-01-19 | Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035266.9A CN105647556B (en) | 2016-01-19 | 2016-01-19 | Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105647556A true CN105647556A (en) | 2016-06-08 |
| CN105647556B CN105647556B (en) | 2019-07-30 |
Family
ID=56487665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035266.9A Active CN105647556B (en) | 2016-01-19 | 2016-01-19 | Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105647556B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825326A (en) * | 2019-04-01 | 2019-05-31 | 湖州师范学院 | The continous way catalytic pyrolysis method for producing oil of the polybag containing greasy dirt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155641A (en) * | 1995-11-28 | 1997-07-30 | 株式会社荏原制作所 | Method and apparatus for treating wastes by gasification |
| JP2001153322A (en) * | 1999-11-19 | 2001-06-08 | Kangen Yoyu Gijutsu Kenkyusho:Kk | Process for melting furnace of shaft kiln, cupola, blast furnace, and rotary kiln |
| CN1304951A (en) * | 2000-10-11 | 2001-07-25 | 中国科学院山西煤炭化学研究所 | Process for treating waste rubber or plastics and its gasifying equipment |
| CN1392224A (en) * | 2001-06-14 | 2003-01-22 | 上海市环境工程设计科学研究院 | Oil refining process of waste plastic and equipment |
| CN101113341A (en) * | 2007-09-11 | 2008-01-30 | 昆明理工大学 | Method for preparing combustible gas by using metallurgy molten slag and solid combustible substance |
-
2016
- 2016-01-19 CN CN201610035266.9A patent/CN105647556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155641A (en) * | 1995-11-28 | 1997-07-30 | 株式会社荏原制作所 | Method and apparatus for treating wastes by gasification |
| JP2001153322A (en) * | 1999-11-19 | 2001-06-08 | Kangen Yoyu Gijutsu Kenkyusho:Kk | Process for melting furnace of shaft kiln, cupola, blast furnace, and rotary kiln |
| CN1304951A (en) * | 2000-10-11 | 2001-07-25 | 中国科学院山西煤炭化学研究所 | Process for treating waste rubber or plastics and its gasifying equipment |
| CN1392224A (en) * | 2001-06-14 | 2003-01-22 | 上海市环境工程设计科学研究院 | Oil refining process of waste plastic and equipment |
| CN101113341A (en) * | 2007-09-11 | 2008-01-30 | 昆明理工大学 | Method for preparing combustible gas by using metallurgy molten slag and solid combustible substance |
Non-Patent Citations (2)
| Title |
|---|
| 李先荣等: "铬渣治理新法综述", 《西部皮革》 * |
| 纪柱: "《铬渣治理工程实用技术》", 31 October 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825326A (en) * | 2019-04-01 | 2019-05-31 | 湖州师范学院 | The continous way catalytic pyrolysis method for producing oil of the polybag containing greasy dirt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105647556B (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105524635B (en) | Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of steel slag | |
| CN105542813B (en) | Biomass recycling and chromium slag harmless synchronization method | |
| CN105598132B (en) | Method for synchronously recycling biomass and harmlessly treating chromium slag by using waste heat of blast furnace slag | |
| CN105542859B (en) | Technology for recycling biomass and producing high-quality fuel gas by using waste heat of blast furnace slag | |
| CN106830722B (en) | Organic wastewater cooperates with the system and method for Industrial Solid Waste preparation ultrahigh water filler | |
| CN106010651B (en) | A kind of processing unit of tanning waste and treatment process containing it | |
| CN105945028B (en) | Consumer waste incineration regeneration technique | |
| CN105647584A (en) | Technology for recycling biomass and harmlessly treating chromium slag by using waste heat of blast furnace slag | |
| CN105665415A (en) | Sludge recycling and chromium slag harmless synchronization technology | |
| CN105542818B (en) | Synchronization technology for recycling sludge and harmlessly treating chromium slag by using steel slag waste heat | |
| CN103537477A (en) | Staged treatment equipment and technique for leather making wastes | |
| CN105647556B (en) | Synchronous technology for recycling plastics and harmlessly treating chromium slag by using waste heat of blast furnace slag | |
| CN105728425A (en) | Synchronization technology for recycling biomass and harmlessly treating chromium slag by using steel slag waste heat | |
| CN105642654A (en) | Synchronization technology for recycling sludge and harmless chromium slag by using waste heat of blast furnace slag | |
| CN105524631A (en) | Method for preparing energy gas by using sludge and simultaneously harmlessly treating chromium slag | |
| CN105537244B (en) | Method for synchronously recycling biomass and harmlessly treating chromium slag by using waste heat of steel slag | |
| CN105670667B (en) | Method for synchronously treating chromium slag and chlorine-free plastic | |
| CN105694938B (en) | Method for preparing energy oil gas and simultaneously harmlessly treating chromium slag by using chlorine-containing plastics | |
| CN105524636B (en) | Plastic recycling and chromium slag harmless synchronization method | |
| CN105694987B (en) | Method for preparing energy gas by using biomass and simultaneously harmlessly treating chromium slag | |
| CN105623690B (en) | Method for preparing energy gas by using chlorine-containing plastics and simultaneously harmlessly treating chromium slag | |
| CN105524640B (en) | Method for preparing energy gas by using chlorine-free plastic and simultaneously harmlessly treating chromium slag | |
| CN105524639B (en) | Method for preparing energy gas by using plastics and simultaneously harmlessly treating chromium slag | |
| CN105602621B (en) | Technology for recycling biomass and producing high-quality fuel gas by using waste heat of steel slag | |
| CN114031318B (en) | Method for directly preparing cement by utilizing waste incineration fly ash and prepared cement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 11, Fushun Road, North District, Qingdao, Shandong Applicant after: Qingdao University of Technology Address before: 266033 No. 2 Changjiang Road, Qingdao economic and Technological Development Zone, Shandong Applicant before: Qingdao University of Technology |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240516 Address after: 201100 room 0155, 2 / F, jilou, No. 555, Dongchuan Road, Minhang District, Shanghai Patentee after: SHANGHAI JIERANG SOIL ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Country or region after: China Address before: No. 11, Fushun Road, North District, Qingdao, Shandong Patentee before: Qingdao University of Technology Country or region before: China |