CN104668272A - Efficient treatment method for flying ash - Google Patents
Efficient treatment method for flying ash Download PDFInfo
- Publication number
- CN104668272A CN104668272A CN201510052854.9A CN201510052854A CN104668272A CN 104668272 A CN104668272 A CN 104668272A CN 201510052854 A CN201510052854 A CN 201510052854A CN 104668272 A CN104668272 A CN 104668272A
- Authority
- CN
- China
- Prior art keywords
- flying dust
- treatment method
- efficient treatment
- power plant
- heating
- 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
Abstract
The invention discloses an efficient treatment method for flying ash. The method comprises the following steps: (1) collecting the flying ash from a garbage incinerator flue of a garbage incineration power generation plant, and adding 2-10 percent of a secondary synthesis barrier and 0.5-2 percent of a catalyst into the flying ash; (2) putting the flying ash under an atmosphere environment for full heating treatment; (3) reducing the ambient temperature of the last step, and conveying waste gas generated in a heating process in the last step into a boiler of a power plant. According to the treatment method disclosed by the invention, dioxin can be completely removed from the flying ash, and the treated waste gas can be fed into the boiler of the power plant, so that secondary utilization of waste energy is realized, and the technology is environmentally friendly.
Description
Technical field
The present invention relates to a kind of high-efficient treatment method of flying dust.
Background technology
Flying dust is the danger wastes produced in the incinerator flue of garbage incinerating power plant, wherein containing a large amount of noxious material as two dislike because of, if do not dealt carefully with, can environment be given, human body causes great injury, such as, causing the distortion of fetus, bring out human canceration etc.But, at present, still there is no a kind of method of effective this type of danger wastes of process, flying dust is reasonably processed.
In prior art, for the processing method of flying dust, mostly be simple heating, but there is natural deficiency in this processing method, although two dislike because of can heating process in, there is the decomposition of a part, but, when temperature drops to a certain interval, such as, in 200-300 DEG C, product after decomposition will again synthesize two evils because of, the effect processed is had a greatly reduced quality, and this problem, annoyings the technical staff in industry always.
Summary of the invention
The object of the present invention is to provide a kind of high-efficient treatment method of flying dust.
The technical solution used in the present invention is:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 2-10% and the catalyst accounting for flying dust quality 0.5-2%;
2) heat fully under flying dust being placed in atmosphere;
3) environment temperature of upper step reduced, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
Described secondary synthesis barrier is thiosulfate, sulphurizing salt, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) be 1:(0.8-1.2 according to mass ratio): (0.8-1.2): (0.8-1.2) forms.
Described thiosulfate is at least one in sodium thiosulfate, potassium thiosulfate, ATS (Ammonium thiosulphate).
Described sulphurizing salt is at least one in vulcanized sodium, potassium sulfide, ammonium sulfide.
Described catalyst is V
2o
5-WO
3/ TiO
2, V
2o
5-MoO
3/ TiO
2in at least one.
Step 2) in, the temperature of heating is 300-800 DEG C.
Step 2) in, the time of heating is 30-120min.
Step 2) in, atmosphere is made up of protective gas, trace hydrogen, trace oxygen; Wherein, protective gas is at least one in nitrogen, helium, argon gas.
In atmosphere, the volume content of hydrogen is 0.1-0.5%, and the volume content of oxygen is 0.1-0.5%, and surplus is protective gas.
In step 3), temperature is reduced to less than 200 DEG C.
The invention has the beneficial effects as follows: processing method of the present invention, can disliking two in flying dust because removing comparatively up hill and dale, and the waste gas produced after process is logical postbacks boiler of power plant, the secondary realizing the refuse energy utilizes, technique environmental protection.
Detailed description of the invention
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 2-10% and the catalyst accounting for flying dust quality 0.5-2%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2, V
2o
5-MoO
3/ TiO
2in at least one; Described secondary synthesis barrier is thiosulfate, sulphurizing salt, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) be 1:(0.8-1.2 according to mass ratio): (0.8-1.2): (0.8-1.2) forms; Described thiosulfate is at least one in sodium thiosulfate, potassium thiosulfate, ATS (Ammonium thiosulphate); Described sulphurizing salt is at least one in vulcanized sodium, potassium sulfide, ammonium sulfide.
2), under flying dust being placed in atmosphere, at 300-800 DEG C, 30-120min is heated; Wherein, atmosphere is made up of protective gas, trace hydrogen, trace oxygen; Wherein, in atmosphere, the volume content of hydrogen is 0.1-0.5%, and the volume content of oxygen is 0.1-0.5%, and surplus is protective gas, and protective gas is at least one in nitrogen, helium, argon gas;
3) environment temperature of upper step be reduced to less than 200 DEG C (preferred, to be 25-200 DEG C), the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
Below in conjunction with specific embodiment, the present invention is described further:
embodiment 1:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 2% and the catalyst accounting for flying dust quality 0.5%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2; The mixture that described secondary synthesis barrier is sodium thiosulfate, vulcanized sodium, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) are 1:1:1:1 composition according to mass ratio;
2) flying dust is placed in airtight rotary furnace, at 300 DEG C, carries out heating 120min; In the atmosphere of airtight rotary furnace, the volume content of hydrogen is 0.1%, and the volume content of oxygen is 0.1%, and surplus is protective gas nitrogen;
3) environment temperature of upper step is reduced to 180-200 DEG C, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
After tested, before process, two in flying dust is disliked because class toxic equivalent concentration is 311ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 0.11ng TEQ/kg.
embodiment 2:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 5% and the catalyst accounting for flying dust quality 1%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2; The mixture that described secondary synthesis barrier is sodium thiosulfate, vulcanized sodium, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) are 1:1.2:1.2:0.8 composition according to mass ratio;
2) flying dust is placed in airtight rotary furnace, at 500 DEG C, carries out heating 80min; In the atmosphere of airtight rotary furnace, the volume content of hydrogen is 0.2%, and the volume content of oxygen is 0.2%, and surplus is protective gas nitrogen;
3) environment temperature of upper step is reduced to 80-100 DEG C, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
After tested, before process, two in flying dust is disliked because class toxic equivalent concentration is 522ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 0.10ng TEQ/kg.
embodiment 3:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 10% and the catalyst accounting for flying dust quality 1%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2with V
2o
5-MoO
3/ TiO
2according to the mixture of mass ratio 1:1; The mixture that described secondary synthesis barrier is sodium thiosulfate, vulcanized sodium, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) are 1:0.8:0.8:1.2 composition according to mass ratio;
2) flying dust is placed in airtight rotary furnace, at 500 DEG C, carries out heating 120min; In the atmosphere of airtight rotary furnace, the volume content of hydrogen is 0.5%, and the volume content of oxygen is 0.3%, and surplus is protective gas nitrogen;
3) environment temperature of upper step is reduced to 60-80 DEG C, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
After tested, before process, two in flying dust is disliked because class toxic equivalent concentration is 633ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 0.23ng TEQ/kg.
embodiment 4:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 6% and the catalyst accounting for flying dust quality 2%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2with V
2o
5-MoO
3/ TiO
2according to the mixture of mass ratio 1:2; The mixture that described secondary synthesis barrier is sodium thiosulfate, vulcanized sodium, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) are 1:0.8:0.8:1.2 composition according to mass ratio;
2) flying dust is placed in airtight rotary furnace, at 800 DEG C, carries out heating 100min; In the atmosphere of airtight rotary furnace, the volume content of hydrogen is 0.2%, and the volume content of oxygen is 0.5%, and surplus is protective gas nitrogen;
3) environment temperature of upper step is reduced to 60-80 DEG C, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
After tested, before process, two in flying dust is disliked because class toxic equivalent concentration is 458ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 0.16ng TEQ/kg.
embodiment 5:
A high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 6% and the catalyst accounting for flying dust quality 2%; Wherein, described catalyst is V
2o
5-WO
3/ TiO
2with V
2o
5-MoO
3/ TiO
2according to the mixture of mass ratio 1:2; The mixture that described secondary synthesis barrier is sodium thiosulfate, vulcanized sodium, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) are 1:0.8:0.8:1.2 composition according to mass ratio;
2) flying dust is placed in airtight rotary furnace, at 600 DEG C, carries out heating 120min; In the atmosphere of airtight rotary furnace, the volume content of hydrogen is 0.2%, and the volume content of oxygen is 0.5%, and surplus is protective gas nitrogen;
3) environment temperature of upper step is reduced to 100-120 DEG C, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
After tested, before process, two in flying dust is disliked because class toxic equivalent concentration is 399ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 0.13ng TEQ/kg.
comparative example 1:
A kind of flyash treatment method, step is as follows:
Flying dust is collected from the incinerator flue of garbage incinerating power plant, dust is placed in the airtight rotary furnace being full of nitrogen and heats (content of stove oxygen is less than 0.4vol%), the temperature of stove heating controls at 500 DEG C, heating treatment time is 30min, the waste gas produced in rotary furnace, by pipeline, sends back in power plant boiler.
Through test, before process, two in dust is disliked because class toxic equivalent concentration is 326ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 1.2ng TEQ/kg.
comparative example 2:
A kind of flyash treatment method, step is as follows:
Flying dust is collected from the incinerator flue of garbage incinerating power plant, dust is placed in the airtight rotary furnace being full of nitrogen and heats (content of stove oxygen is less than 0.4vol%), the temperature of stove heating controls at 450 DEG C, heating treatment time is 50min, the waste gas produced in rotary furnace, by pipeline, sends back in power plant boiler.
Through test, before process, two in dust is disliked because class toxic equivalent concentration is 280ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 2.0ng TEQ/kg.
comparative example 3:
A kind of flyash treatment method, step is as follows:
Flying dust is collected from the incinerator flue of garbage incinerating power plant, dust is placed in the airtight rotary furnace being full of nitrogen and heats (content of stove oxygen is less than 0.4vol%), the temperature of stove heating controls at 300 DEG C, processing time is 90min, the waste gas produced in rotary furnace, by pipeline, sends back in power plant boiler.
Through test, before process, two in dust is disliked because class toxic equivalent concentration is 260ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 1.1ng TEQ/kg.
comparative example 4:
A kind of flyash treatment method, step is as follows:
Flying dust is collected from the incinerator flue of garbage incinerating power plant, dust is placed in the airtight rotary furnace being full of nitrogen and heats (content of stove oxygen is less than 0.4vol%), the temperature of stove heating controls at 550 DEG C, processing time is 90min, the waste gas produced in rotary furnace, by pipeline, sends back in power plant boiler.
Through test, before process, two in dust is disliked because class toxic equivalent concentration is 311ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 1.5ng TEQ/kg.
comparative example 5:
A kind of flyash treatment method, step is as follows:
Flying dust is collected from the incinerator flue of garbage incinerating power plant, dust is placed in the airtight rotary furnace being full of nitrogen and heats (content of stove oxygen is less than 0.4vol%), the temperature of stove heating controls at 380 DEG C, processing time is 60min, the waste gas produced in rotary furnace, by pipeline, sends back in power plant boiler.
Through test, before process, two in dust is disliked because class toxic equivalent concentration is 321ng TEQ/kg, and two in the flying dust after heating is disliked because class toxic equivalent concentration is 1.9ng TEQ/kg.
Claims (10)
1. a high-efficient treatment method for flying dust, is characterized in that: step is as follows:
1) from the incinerator flue of garbage incinerating power plant, collect flying dust, in flying dust, add the secondary synthesis barrier accounting for flying dust quality 2-10% and the catalyst accounting for flying dust quality 0.5-2%;
2) heat fully under flying dust being placed in atmosphere;
3) environment temperature of upper step reduced, the waste gas simultaneously produced in upper step heating process is delivered in power plant boiler.
2. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: described secondary synthesis barrier is thiosulfate, sulphurizing salt, inferior sodium phosphate, ammonium dihydrogen phosphate (ADP) be 1:(0.8-1.2 according to mass ratio): (0.8-1.2): (0.8-1.2) forms.
3. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: described thiosulfate is at least one in sodium thiosulfate, potassium thiosulfate, ATS (Ammonium thiosulphate).
4. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: described sulphurizing salt is at least one in vulcanized sodium, potassium sulfide, ammonium sulfide.
5. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: described catalyst is V
2o
5-WO
3/ TiO
2, V
2o
5-MoO
3/ TiO
2in at least one.
6. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: step 2) in, the temperature of heating is 300-800 DEG C.
7. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: step 2) in, the time of heating is 30-120min.
8. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: step 2) in, atmosphere is made up of protective gas, trace hydrogen, trace oxygen; Wherein, protective gas is at least one in nitrogen, helium, argon gas.
9. the high-efficient treatment method of a kind of flying dust according to claim 8, is characterized in that: in atmosphere, and the volume content of hydrogen is 0.1-0.5%, and the volume content of oxygen is 0.1-0.5%, and surplus is protective gas.
10. the high-efficient treatment method of a kind of flying dust according to claim 1, is characterized in that: in step 3), and temperature is reduced to less than 200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052854.9A CN104668272B (en) | 2015-02-02 | 2015-02-02 | A kind of high-efficient treatment method of flying dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052854.9A CN104668272B (en) | 2015-02-02 | 2015-02-02 | A kind of high-efficient treatment method of flying dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668272A true CN104668272A (en) | 2015-06-03 |
| CN104668272B CN104668272B (en) | 2016-11-23 |
Family
ID=53304154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052854.9A Active CN104668272B (en) | 2015-02-02 | 2015-02-02 | A kind of high-efficient treatment method of flying dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668272B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018108575A (en) * | 2016-12-18 | 2018-07-12 | グヮアーンドォーン デチェン エンバイロンメンタル シー−テック カンパニー リミテッドＧｕａｎｇｄｏｎｇ Ｄｅｃｈｅｎｇ Ｅｎｖｉｒｏｎｍｅｎｔａｌ Ｓｃｉ−Ｔｅｃｈ Ｃｏ．，Ｌｔｄ． | Method of removing toxins from fly ash |
| CN110615660A (en) * | 2018-08-09 | 2019-12-27 | 苏州重于山新材料科技有限公司 | Method for preparing pavement rapid repair material by utilizing waste incineration fly ash |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0534231A1 (en) * | 1991-09-10 | 1993-03-31 | Air Products And Chemicals, Inc. | Fixation of heavy metals in scrubbed municipal solid waste incinerator ash |
| CN1533991A (en) * | 2003-03-27 | 2004-10-06 | 徐宝安 | Power generating heat supplying clean production system using city sewage and garbage resources |
| CN101823073A (en) * | 2010-03-13 | 2010-09-08 | 周开根 | Gasification-liquefaction disposal method, system and equipment for household garbage |
| CN103042022A (en) * | 2012-12-05 | 2013-04-17 | 广东德诚环保科技有限公司 | Fly ash processing method |
| CN103264044A (en) * | 2013-06-05 | 2013-08-28 | 中国科学院广州能源研究所 | Method for cooperatively removing heavy metal and dioxin out of burnt waste fly ash |
-
2015
- 2015-02-02 CN CN201510052854.9A patent/CN104668272B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0534231A1 (en) * | 1991-09-10 | 1993-03-31 | Air Products And Chemicals, Inc. | Fixation of heavy metals in scrubbed municipal solid waste incinerator ash |
| CN1533991A (en) * | 2003-03-27 | 2004-10-06 | 徐宝安 | Power generating heat supplying clean production system using city sewage and garbage resources |
| CN101823073A (en) * | 2010-03-13 | 2010-09-08 | 周开根 | Gasification-liquefaction disposal method, system and equipment for household garbage |
| CN103042022A (en) * | 2012-12-05 | 2013-04-17 | 广东德诚环保科技有限公司 | Fly ash processing method |
| CN103264044A (en) * | 2013-06-05 | 2013-08-28 | 中国科学院广州能源研究所 | Method for cooperatively removing heavy metal and dioxin out of burnt waste fly ash |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018108575A (en) * | 2016-12-18 | 2018-07-12 | グヮアーンドォーン デチェン エンバイロンメンタル シー−テック カンパニー リミテッドＧｕａｎｇｄｏｎｇ Ｄｅｃｈｅｎｇ Ｅｎｖｉｒｏｎｍｅｎｔａｌ Ｓｃｉ−Ｔｅｃｈ Ｃｏ．，Ｌｔｄ． | Method of removing toxins from fly ash |
| JP7108244B2 (en) | 2016-12-18 | 2022-07-28 | タクシン ダイオキシン ディスポーザル コーポレイション | How To Remove Toxins From Fly Ash |
| CN110615660A (en) * | 2018-08-09 | 2019-12-27 | 苏州重于山新材料科技有限公司 | Method for preparing pavement rapid repair material by utilizing waste incineration fly ash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104668272B (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202356390U (en) | Renewable energy source and resource utilization system in living garbage disposal site | |
| CN202494116U (en) | Municipal-waste-incinerating power-generating comprehensive treatment system | |
| LT2004031A (en) | Method for processing waste products and corresponding processing plant | |
| CN104668272A (en) | Efficient treatment method for flying ash | |
| CN103196144A (en) | Harmless resource comprehensive utilization device and method of pharmaceutical solid and gas waste | |
| CN104261645A (en) | Sludge treatment process and system | |
| CN205109374U (en) | Old and useless circuit board exhaust treatment device | |
| CN102772978A (en) | Method for treating flying ash | |
| CN103042022B (en) | A kind of flyash treatment method | |
| Yusuff et al. | Physico-chemical composition and energy content analysis of solid waste. A case study of Castlereagh District, Northern Ireland | |
| CN203082895U (en) | Yellow phosphorus off gas recycling system | |
| CN109762584A (en) | A kind of papermaking waste disposal system | |
| CN210624530U (en) | Hazardous waste burns preprocessing device | |
| CN105444177A (en) | Garbage sorting drying combustion power generation process | |
| CN203625307U (en) | Continuous solid waste pyrolysis and gasification treatment system capable of recycling heat energy | |
| CN203215680U (en) | Pharmaceutical solid-gas waste harmless resource comprehensive utilization device | |
| CN105414151A (en) | Household garbage treatment process | |
| CN208595544U (en) | A kind of harmful influence processing system | |
| DE102010049379A1 (en) | Device useful for continuous energetic recycling of solid waste, comprises material supply device with sealing device, drying zone, smoldering zone, coke discharge device, incinerating screw and thermal post-combustion device | |
| CN106594748B (en) | A kind of pyrolysis of solid waste and combustion system | |
| CN105157030A (en) | Method for reducing emission of nitrogen oxide in garbage incineration process | |
| CN203598662U (en) | Device for reducing and treating VOCs (volatile organic compounds) in aluminized paper | |
| CN202415342U (en) | Sludge drying treatment device | |
| CN104307295B (en) | A kind of garbage incinerating tail gas processing method | |
| CN110260329A (en) | A method of processing waste plastic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |