CN201401797Y - Ammonia tail gas treating furnace - Google Patents
Ammonia tail gas treating furnace Download PDFInfo
- Publication number
- CN201401797Y CN201401797Y CN2009201849833U CN200920184983U CN201401797Y CN 201401797 Y CN201401797 Y CN 201401797Y CN 2009201849833 U CN2009201849833 U CN 2009201849833U CN 200920184983 U CN200920184983 U CN 200920184983U CN 201401797 Y CN201401797 Y CN 201401797Y
- Authority
- CN
- China
- Prior art keywords
- ammonia
- air inlet
- tail gas
- gas treating
- preheating cavity
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to the technology of treating ammonia waste gas generated by calcining ammonium paratungstate in tungsten hydrometallurgy industry, in particular to an ammonia tail gas treating furnace. At present, an incineration technology adopted for treating ammonia tail gas needs fuel gas for supplying combustion heat energy and accompanied with the fuel gas consumption, waste gas such as carbon dioxide and the like are discharged, and consequently environment pollution still exists. The treating furnace adopts a technical scheme as follows: an air inlet port is arranged on thewall surface of a preheating cavity; a flame arrester is arranged between the air inlet port and an air inlet pipe; one end of the flame arrester, close to the air inlet port, is provided with a deluge extinguishment spray nozzle; the wall surface of the preheating cavity is also distributed with explosion-proof vents; the middle part of the furnace body is provided with a heating chamber that iscommunicated with the preheating cavity; a heating element is installed inside the heating chamber and a catalyst layer is arranged on the heating element while an insulating layer is arranged on theinner wall of the heating chamber; and an exhaust port is arranged at the upper part of the furnace body and communicated with the heating chamber, so that ammonia is resolved into combustible gas forbeing combusted over; in addition, follow-up combustion does not need the external world to supply heat energy, thus not only being environment-friendly, but also being economical.
Description
Technical field
The utility model relates to the ammonia vent gas treatment technology that the ammonium paratungstate calcining is produced in the tungsten hydrometallurgy industry, particularly a kind of ammonia-containing tail gas treating furnace.
Background technology
In the tungsten hydrometallurgy production process, use ammonium chloride, liquefied ammonia preparation to resolve agent and be used for producing and making the ammonium paratungstate product at home, generation tail gas contains NH during the ammonium paratungstate calcining and decomposing in the tail gas
3, H
2O, O
2, N
2And dust, ammonia emission place vegetation is withered, and foul smell is smoked the people, and grievous injury people's respiratory system influences atmospheric environment, causes serious environmental pollution.For now, in the sector ammonia tail gas is not had complete treatment technology, some enterprises adopt spraying method to handle ammonia, and absorption liquid enters waste water, causes the ammonia-nitrogen content in the industrial wastewater to exceed standard, and has produced new secondary pollution.Along with the waste gas pollution control and treatment development of technology, the ammonia treatment of waste gas there have been now new technologies such as biological filtering tower combined working technology and incineration technology, the ammonia nitrogen that the biological filtering tower combined working technology is mainly used in the waste water is handled, and incineration technology also only adapt to be handled and is contained some high petrochemical industries of ammonia concentration, and need consume fuel gas to provide combustion heat energy, and with exhaust gas discharging such as carbon dioxide for it.
The utility model content
The utility model purpose provides a kind of not only environmental protection but also economic ammonia-containing tail gas treating furnace, it can accomplish not have harmful exhaust emissions, do not need extra fuel and come sustained combustion tail gas by self combustion heat, the influence of having avoided ammonia emission that atmospheric environment is caused realizes the environmental requirement of no ammonia pollution.
The utility model adopts technical scheme to be: a kind of ammonia-containing tail gas treating furnace, comprise the bottom of furnace body preheating cavity, on the wall of preheating cavity, be provided with air inlet, between air inlet and air inlet pipe, spark arrester is housed, spark arrester is installed water near the air inlet end and is drenched fire extinguishing sprayer, also is furnished with venting on the wall of preheating cavity; The body of heater middle part is a heating clamber, and heating clamber communicates with preheating cavity, and heater is installed in the heating clamber, and catalyst layer is arranged in above the heater, arranges heat-insulation layer at the heating clamber inwall; Upper of furnace body is an exhaust outlet, communicates with heating clamber;
Spark arrester is the cylindrical tube of a dress thin copper wire, and two ends are connected with air inlet pipe with the preheating cavity air inlet with ring flange respectively;
The venting inner end is fixed with compressed asbestos sheet as the burst disk film, and the outer end can connect a column barrel, can be filled with water in the bucket and seal venting;
Heater is a resistance wire, adopts siderochrome silk exothermic material;
Heater is regulated the temperature of heater by thermocouple temperature measurement and temperature controller;
Catalyst layer adopts nickel, manganese, iron as catalyst;
It is insulation material that heat-insulation layer adopts alumino-silicate brick.
The spark arrester that air inlet is installed can prevent tempering, once tempering occurs water pouring fire extinguishing sprayer is put out tempering.Heating clamber outer wall heat-insulation layer prevents that heat from distributing, and plays insulation effect, guarantees the required energy demand of the follow-up cartalytic decomposition effect of ammonia, and the exhaust outlet on heating clamber top works to collect gas and windproof, anti-rain.
The ammonia catalyst is at high temperature, H is arranged
2Use its catalytic decomposition under the situation of O for a long time
The reactive group present principles:
Ammonia resolves into N under 800～1000 ℃ temperature
2And H
2, H
2With the O in the mist
2Reaction generates H
2O also emits heat, can keep the required energy demand of subsequent reactions under the release of reaction heat.By thermally equilibrated calculating, designed the reacting furnace of heat balance, promptly do not increase the just sustainable operation of heat newly during operate as normal, saved energy greatly.In other words, heater only need play ignition action, once ammonia resolves into N
2And H
2, H
2It is temperature required that burned back produces the enough ammonia decomposition of heat, can close heater at this moment, need not the extraneous heat of supplying with, and burning after this almost is the cost free operation.
The good effect that the utility model produced: the ammonia-containing exhaust that can handle variable concentrations, also can handle the ammonia-containing exhaust that contains other fuel gas, after ammonia-containing tail gas treating furnace was handled, ammonia can all obtain decomposition and inversion, no longer produced the problem of ammonia pollution and secondary environmental pollution; Ammonia decomposes the temperature required id reaction of leaning on after the gas combustion can provide, and therefore follow-up burning almost is the cost free operation, has saved a large amount of energy; Carry out subsequent combustion owing to need not the extraneous heat of supplying with, production cost significantly reduces; Need not artificial nurse after the burning, saved the labour.
Description of drawings
Accompanying drawing is the utility model structural representation.
1 preheating cavity among the figure, 2 heaters, 3 catalyst layers, 4 heat-insulation layers, 5 exhaust outlets, 6 water drench fire extinguishing sprayer, 7 spark arresters, 8 air inlet pipe, 9 ventings.
The specific embodiment
Preheating cavity adopts the cylinder barrel shaped steel construction, opens two circular ports on the barrel, is respectively air inlet and venting;
Spark arrester is the cylindrical tube of a dress thin copper wire, and two ends are connected with air inlet pipe with the preheating cavity air inlet with ring flange respectively;
The venting inner end is fixed with compressed asbestos sheet as the burst disk film, and the outer end can connect a column barrel, can be filled with water in the bucket and seal venting;
Square structure is made with steel plate in the heating clamber outside, empty brick laying structure in building by laying bricks or stones with the alumina silicate insulating brick in quadra;
Heater is a resistance wire, adopts siderochrome silk exothermic material, and the heat-insulation layer that the resistance wire eduction rod passes body of heater links to each other with power line, adopts thermocouple temperature measurement, by temperature controller control heater silicon controlled power output, control heater temperature;
Catalyst layer adopts nickel, manganese, iron as catalyst.
The utility model ammonia-containing tail gas treating furnace is sent to preheating cavity by blower fan through the air inlet of air inlet pipe, bottom of furnace body with ammonia-containing exhaust and carries out preheating, heating of resistance wire heater and catalyst effect by heating clamber, be under 800 ℃～1000 ℃ the condition, ammonia to be decomposed into N in heating-up temperature
2And H
2, imflammable gas can all burn in heating clamber fully, the nontoxic N of unburned
2Discharge by exhaust outlet.The ammonia catalytic decomposition becomes N
2And H
2, H
2With the O in the mist
2Reaction generates H
2O also emits heat, discharge heat and can keep the required energy demand of subsequent reactions, so heater only need play ignition action, once ammonia resolves into N
2And H
2, H
2It is temperature required that burned back produces the enough ammonia decomposition of heat, can close heater at this moment, and burning after this almost is the cost free operation, need not the extraneous heat of supplying with.Discharge the ammonia-containing exhaust that heat can also preheating enters into preheating cavity.
Claims (7)
1, a kind of ammonia-containing tail gas treating furnace, it is characterized in that: comprise the bottom of furnace body preheating cavity, on the wall of preheating cavity, be provided with air inlet, between air inlet and air inlet pipe, spark arrester is housed, spark arrester is installed water near the air inlet end and is drenched fire extinguishing sprayer, also is furnished with venting on the wall of preheating cavity; The body of heater middle part is a heating clamber, and heating clamber communicates with preheating cavity, and heater is installed in the heating clamber, and catalyst layer is arranged in above the heater, arranges heat-insulation layer at the heating clamber inwall; Upper of furnace body is an exhaust outlet, communicates with heating clamber.
2, according to the described a kind of ammonia-containing tail gas treating furnace of claim 1, it is characterized in that: spark arrester is the cylindrical tube of a dress thin copper wire, and two ends are connected with air inlet pipe with the preheating cavity air inlet with ring flange respectively.
3, according to the described a kind of ammonia-containing tail gas treating furnace of claim 1, it is characterized in that: the venting inner end is fixed with compressed asbestos sheet as the burst disk film, and the outer end can connect a column barrel, can be filled with water in the bucket and seal venting.
4, according to the described a kind of ammonia-containing tail gas treating furnace of claim 1, it is characterized in that: heater is a resistance wire, adopts siderochrome silk exothermic material.
5, according to claim 1 or 4 described a kind of ammonia-containing tail gas treating furnaces, it is characterized in that: heater also can be connected with thermocouple temperature measurement instrument and temperature controller.
6, according to the described a kind of ammonia-containing tail gas treating furnace of claim 1, it is characterized in that: catalyst layer adopts nickel, manganese, iron as catalyst.
7, according to the described a kind of ammonia-containing tail gas treating furnace of claim 1, it is characterized in that: it is insulation material that heat-insulation layer adopts alumino-silicate brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201849833U CN201401797Y (en) | 2009-05-10 | 2009-05-10 | Ammonia tail gas treating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201849833U CN201401797Y (en) | 2009-05-10 | 2009-05-10 | Ammonia tail gas treating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201401797Y true CN201401797Y (en) | 2010-02-10 |
Family
ID=41661592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201849833U Expired - Lifetime CN201401797Y (en) | 2009-05-10 | 2009-05-10 | Ammonia tail gas treating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201401797Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571294B (en) * | 2009-05-10 | 2011-04-27 | 崇义章源钨业股份有限公司 | Ammonia-containing tail gas treating furnace |
| CN103307611A (en) * | 2012-03-16 | 2013-09-18 | 达斯环境专家有限责任公司 | Device for disposing harmful gases |
| CN105546554A (en) * | 2016-01-25 | 2016-05-04 | 阿尔赛(苏州)无机材料有限公司 | Efficient purification furnace for volatile organic compound (VOC) exhaust gas |
| CN108844087A (en) * | 2018-09-07 | 2018-11-20 | 云汇环保科技南通有限公司 | A kind of novel C O furnace |
-
2009
- 2009-05-10 CN CN2009201849833U patent/CN201401797Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571294B (en) * | 2009-05-10 | 2011-04-27 | 崇义章源钨业股份有限公司 | Ammonia-containing tail gas treating furnace |
| CN103307611A (en) * | 2012-03-16 | 2013-09-18 | 达斯环境专家有限责任公司 | Device for disposing harmful gases |
| CN103307611B (en) * | 2012-03-16 | 2016-05-04 | 达斯环境专家有限责任公司 | For remove the device of pernicious gas by burning |
| CN105546554A (en) * | 2016-01-25 | 2016-05-04 | 阿尔赛(苏州)无机材料有限公司 | Efficient purification furnace for volatile organic compound (VOC) exhaust gas |
| CN108844087A (en) * | 2018-09-07 | 2018-11-20 | 云汇环保科技南通有限公司 | A kind of novel C O furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201399345Y (en) | Calciner for producing honeycomb type fume denitration catalyzer | |
| CN101519202B (en) | Carbonization-activation integral furnace for producing active carbon | |
| CN201401797Y (en) | Ammonia tail gas treating furnace | |
| CN106003397B (en) | Precast concrete maintenance process and precast concrete curing system | |
| CN104773731A (en) | Method for preparing active carbon by using multi-hearth furnace | |
| CN101571294B (en) | Ammonia-containing tail gas treating furnace | |
| CN201925935U (en) | Combustible gas combustion device | |
| CN203360550U (en) | Ammonia-containing tail gas treatment device in nitridation heat treatment technology | |
| CN107130079B (en) | It is a kind of to prepare CO using coal gas of converter2And the method and system of cycle injection | |
| CN103708744B (en) | Low-heat value gas thermal storage type limestone kiln | |
| CN102062398B (en) | Water decomposition combustor | |
| CN103363534A (en) | Novel catalytic-combustion industrial furnace | |
| CN205909311U (en) | Heat accumulating type oxidation furnace | |
| CN209279179U (en) | A kind of VOCs treatment catalysis combustion chamber | |
| CN206410512U (en) | Smelting furnace | |
| CN101936535A (en) | Painted steel strip roasting method for heating exhaust gas with far infrared electric heating tube and catalytically incinerating exhaust gas at low temperature and catalytic oxidizer thereof | |
| CN210229579U (en) | System for utilize dry process production technology to realize green denitration | |
| CN209944741U (en) | Dual-fuel energy-saving hot blast stove | |
| CN210268252U (en) | Flue gas treatment system of rock wool manufacturing | |
| CN209341270U (en) | A kind of environment-friendly type resource utilization system of organic exhaust gas containing chlorine | |
| CN208998070U (en) | A kind of minisize liquid burner of the porous injecting type of cylinder | |
| CN208186336U (en) | Energy-efficient combustion type perlite bloating plant | |
| CN202521614U (en) | Efficient high-temperature incinerator | |
| CN205347319U (en) | Split type carbomorphism bank of ovens | |
| CN110360591A (en) | A kind of natural gas adds hydrogen low nitrogen combustion apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100210 Effective date of abandoning: 20090510 |