CN211847828U - System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method - Google Patents
System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method Download PDFInfo
- Publication number
- CN211847828U CN211847828U CN201922368986.9U CN201922368986U CN211847828U CN 211847828 U CN211847828 U CN 211847828U CN 201922368986 U CN201922368986 U CN 201922368986U CN 211847828 U CN211847828 U CN 211847828U
- Authority
- CN
- China
- Prior art keywords
- acetylene
- tail gas
- carbide slag
- dry method
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a contain acetylene carbide slag tail gas processing system in carbide dry process production acetylene technology, solve the technical problem that prior art tail gas treatment effeciency is low and there is the potential safety hazard in the processing procedure. The utility model comprises a dust remover connected from the carbide slag tail gas source, a heat storage type incinerator connected from the dust remover, a hot air draught fan connected from the heat storage type incinerator, a normal temperature draught fan connected from the heat storage type incinerator, and a tail gas exhaust smoke window connected from the normal temperature draught fan; the air outlet of the hot air draught fan is connected with the inlet of the dust remover, and the heat storage type incinerator is connected with a natural gas supply pipe. The utility model has the advantages of simple structure and scientific and reasonable design, convenient to use adopts heat accumulation formula incineration equipment to burn the processing to containing acetylene carbide slag tail gas, utilizes the heat maintenance system that the acetylene burning in the carbide slag tail gas produced to burn the operation, realizes tail gas high efficiency processing, the low-cost operation of system and the purpose of energy-concerving and environment-protective safe exhaust tail gas.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry, concretely relates to contain acetylene carbide sediment tail gas processing system in carbide dry process production acetylene technology.
Background
In a system for producing acetylene by a calcium carbide dry method, the calcium carbide slag discharged by a generator contains about 10 percent of water and trace calcium carbide particles which are not completely reacted, and simultaneously carries with some acetylene gas to enter tail end output equipment and a buffer storage bin of the calcium carbide slag, and the tail gas containing the acetylene calcium carbide slag can be discharged into the atmosphere after being subjected to harmless treatment, otherwise, the environment pollution can be caused. The traditional method for treating the acetylene-containing carbide slag tail gas has the following problems:
1. the temperature of the carbide slag dust gas is only slightly higher than the normal temperature, and the carbide slag dust gas contains some water vapor and a large amount of dust, is easy to agglomerate, and easily causes the blockage of pipelines, valves and filters of a dust gas treatment system.
2. Acetylene gas contained in the carbide slag dust gas is easy to accumulate and is extremely easy to explode; has great potential safety hazard.
3. The traditional treatment method can not completely remove acetylene in the acetylene-containing carbide slag tail gas, and the acetylene which is not completely removed is discharged into the atmosphere along with the tail gas, so that the pressure on environmental protection is still brought.
Therefore, the acetylene-containing carbide slag tail gas treatment system in the acetylene dry-method production process of carbide is designed, the heat accumulating type incineration equipment is adopted to incinerate the acetylene-containing carbide slag tail gas, the heat generated by the combustion of the acetylene in the carbide slag tail gas is utilized to maintain the incineration operation of the system, the purposes of efficient tail gas treatment, low-cost system operation and energy-saving, environment-friendly and safe tail gas emission are achieved, and the technical problem to be solved by technical personnel in the technical field is urgently needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a tail gas processing system containing acetylene carbide slag in the acetylene dry method production technology of carbide, solves the technical problems of low tail gas processing efficiency and potential safety hazard in the processing process in the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
the acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process of the calcium carbide comprises a dust remover connected from a carbide slag tail gas source, a heat storage type incinerator connected from the dust remover, a hot air induced draft fan connected from the heat storage type incinerator, a normal temperature induced draft fan connected from the heat storage type incinerator, and a tail gas discharge chimney connected from the normal temperature induced draft fan; the air outlet of hot-blast draught fan inserts the import of dust remover, the heat storage formula burns burning furnace and inserts and be used for the heat storage formula burns burning furnace and provides the natural gas supply pipe of fuel gas.
Further, heat accumulation formula burns burning furnace and includes burning the furnace body, it is equipped with at least three heat accumulator holding chamber in the burning furnace body, heat accumulator holding intracavity holding has the heat accumulator, and heat accumulator holding chamber sub-unit connection has blowback gas pipe, tail gas conveyer pipe and low temperature flue gas outer calandria, burning the chamber is established on burning furnace body's interior upper portion, and all heat accumulator holding chambers are linked together through burning the chamber.
Furthermore, the incineration chamber is internally provided with at least one flame spraying nozzle, and the natural gas supply pipe is connected with the flame spraying nozzle.
Furthermore, the upper part of the heat accumulator is communicated with a high-temperature flue gas external discharge pipe, and the high-temperature flue gas external discharge pipe is connected with the hot air induced draft fan.
Further, a program control valve is arranged on the high-temperature flue gas exhaust pipe.
Further, the blowback gas pipe is connected with an outlet of the dust remover.
Further, the tail gas conveying pipe is connected with an outlet of the dust remover.
Further, the low-temperature flue gas outer discharge pipe is connected with an inlet of the normal-temperature draught fan.
Furthermore, the heat accumulator accommodating cavities are three in number.
Furthermore, the blowback pipe, the tail gas conveying pipe and the low-temperature flue gas outer discharge pipe are all provided with program control valves.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has the advantages of simple structure and scientific and reasonable design, convenient to use adopts heat accumulation formula incineration equipment to burn the processing to containing acetylene carbide slag tail gas, utilizes the heat maintenance system that the acetylene burning in the carbide slag tail gas produced to burn the operation, realizes tail gas high efficiency processing, the low-cost operation of system and the purpose of energy-concerving and environment-protective safe exhaust tail gas.
The utility model discloses heat-retaining formula burns burning furnace and adopts three rooms to switch the form. In each operation period, one heat accumulator accommodating cavity is in a high-temperature state, the temperature of tail gas entering the heat accumulator accommodating cavity is increased, and meanwhile, the temperature of the heat accumulator accommodating cavity is gradually reduced; a heat accumulator accommodating cavity is in a smoke exhaust state, the temperature of the heat accumulator accommodating cavity is gradually increased from low temperature, and meanwhile, the temperature of the smoke exhaust is reduced; one heat accumulator containing cavity is in a back flushing state, so that the part of tail gas passing through the combustion chamber but not entering the combustion chamber in the previous period is prevented from being directly discharged without high-temperature incineration. The three heat accumulator accommodating cavities are switched in sequence and alternately operated. The hot-blast draught fan draws wind to the dust remover front end for this department tail gas intensification from high temperature state heat accumulator holding chamber, can also prevent effectively that the dust caking from blockking up equipment such as pipeline, valve and filter when realizing preheating energy-conservation.
Drawings
Fig. 1 is a system block diagram of the present invention.
Fig. 2 is a schematic view of the heat storage type incinerator of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-a dust remover, 2-a heat storage type incinerator, 3-a hot air draught fan, 4-a normal temperature draught fan, 5-a tail gas exhaust window, 6-a natural gas supply pipe, 21-an incinerator body, 22-a heat accumulator, 23-a heat accumulator accommodating cavity, 24-a back blowing gas pipe, 25-a tail gas conveying pipe, 26-a low temperature flue gas exhaust pipe, 27-an incineration cavity, 28-a flame spray nozzle and 29-a high temperature flue gas exhaust pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in figure 1 and 2, the utility model provides an contain acetylene carbide slag tail gas processing system in carbide dry process production acetylene technology, simple structure, design scientific and reasonable, convenient to use adopt heat accumulation formula incineration equipment to burn the processing to containing acetylene carbide slag tail gas, utilize the heat maintenance system of the acetylene burning production in the carbide slag tail gas to burn the operation, realize tail gas high efficiency processing, the low-cost operation of system and energy-concerving and environment-protective safe purpose of discharging tail gas. The utility model comprises a dust remover 1 connected from the carbide slag tail gas source, a heat storage type incinerator 2 connected from the dust remover 1, a hot air draught fan 3 connected from the heat storage type incinerator 2, a normal temperature draught fan 4 connected from the heat storage type incinerator 2, and a tail gas exhaust smoke window 5 connected from the normal temperature draught fan 4; the air outlet of the hot air induced draft fan 3 is connected to the inlet of the dust remover 1, and the heat storage type incinerator 2 is connected to a natural gas supply pipe 6 which is used for providing fuel gas for the heat storage type incinerator 2. Carbide slag tail gas source includes outer tail gas, the terminal output device exhaust dust gas of carbide slag and carbide slag surge bin exhaust dust gas of dry process acetylene preparation device.
Heat accumulation formula burns burning furnace 2 and includes burns burning furnace body 21, it is equipped with at least three heat accumulator holding chamber 23 in the burning furnace body 21, heat accumulator 22 has been put to heat accumulator holding chamber 23 internal content, and heat accumulator holding chamber 23 sub-unit connection has 24, tail gas duct 25 and the outer calandria of low temperature flue gas 26, burning furnace body 21's interior upper portion is established and is burned chamber 27, and all heat accumulator holding chambers 23 are linked together through burning chamber 27. The heat accumulator holding cavity 23 is three, the blowback pipe 24 is connected with the outlet of the dust remover 1, the tail gas conveying pipe 25 is connected with the outlet of the dust remover 1, and the low-temperature flue gas outer discharge pipe 26 is connected with the inlet of the normal-temperature draught fan 4.
The utility model discloses heat-retaining formula burns burning furnace and adopts three rooms to switch the form. In each operation period, one heat accumulator accommodating cavity is in a high-temperature state, the temperature of tail gas entering the heat accumulator accommodating cavity is increased, and meanwhile, the temperature of the heat accumulator accommodating cavity is gradually reduced; a heat accumulator accommodating cavity is in a smoke exhaust state, the temperature of the heat accumulator accommodating cavity is gradually increased from low temperature, and meanwhile, the temperature of the smoke exhaust is reduced; one heat accumulator containing cavity is in a back flushing state, so that the part of tail gas passing through the combustion chamber but not entering the combustion chamber in the previous period is prevented from being directly discharged without high-temperature incineration. The three heat accumulator accommodating cavities are switched in sequence and alternately operated. The hot-blast draught fan draws wind to the dust remover front end for this department tail gas intensification from high temperature state heat accumulator holding chamber, can also prevent effectively that the dust caking from blockking up equipment such as pipeline, valve and filter when realizing preheating energy-conservation.
The utility model discloses a heat accumulation formula burns the high temperature to carbide slag dust gas and burns, has handled the acetylene gas in the gas, reaches the environmental protection and discharges. Meanwhile, the heat released by combustion of acetylene contained in the carbide slag dust gas is utilized to preheat the carbide slag dust gas, so that the temperature of the carbide slag dust gas is increased to be above a dew point, the phenomenon that dust and water vapor are agglomerated due to low temperature is avoided, and the problem of blockage of the carbide slag dust gas in pipelines, valves and filters is solved. The carbide slag dust gas after heating and drying is filtered to recover the carbide slag for reuse, and the dust-removed gas also prevents the dust in the carbide slag dust gas from blocking the heat accumulator of the incinerator, thereby prolonging the service life of the incinerator.
The utility model discloses heat accumulation formula burns burning furnace utilizes the heat accumulation effect of heat accumulator, can only consume a small amount or not consume extra fuel even, can reach higher combustion temperature, handles the low heat value waste gas that contains a small amount of combustible gas. The operation cost is greatly reduced.
The utility model discloses heat accumulation formula burns burning furnace, partly higher temperature's hot flue gas returns to the system entry and mixes with pending carbide slag discharge gas for improve dry process acetylene carbide slag and carry the discharge gas temperature, avoid the caking, diluted the acetylene concentration in the dry process acetylene carbide slag carries the discharge gas simultaneously, reduced the explosion risk that dry process acetylene carbide slag carried the discharge gas from essence; and the other part of the cold flue gas with lower temperature discharged from the regenerative thermal oxidizer is directly discharged into the atmosphere through a chimney. The method has the characteristics of low operation cost, safety, environmental protection, energy conservation and the like.
The utility model discloses carbide slag dust gas burns burning furnace through the carminative heat storage formula of segmentable, and combustible substance wherein is handled to high temperature reaches the requirement that the environmental protection was discharged. Meanwhile, the heat released by combustion of acetylene in the carbide slag dust gas is utilized to preheat the carbide slag dust gas to be treated, so that the blocking of water vapor and dust due to low temperature caking is avoided. In addition, the acetylene content in the carbide slag dust gas is reduced by mixing the low-oxygen-content flue gas subjected to the heat accumulating type incineration treatment into the carbide slag dust gas to be treated, so that the acetylene content in the carbide slag dust gas is reduced to 50% of the lower limit of the explosion limit, and the explosion risk of the carbide slag dust gas containing acetylene is essentially avoided.
The utility model discloses the carbide slag dust gas that comes from carbide slag end output device and buffer bin, though contain the acetylene gas of part flammable, the acetylene content is very low, uses conventional direct incineration disposal method, not only has the explosion risk, still must supply a large amount of fuels; and the utility model discloses utilize the heat accumulation effect of heat accumulator, the heat is retrieved to the flue gas after the cooling burns, utilizes the heat of these recoveries to preheat the gas before the incineration disposal, uses few not use extra fuel even, can reach higher treatment temperature, accomplishes the high temperature innocent treatment of carbide slag dust gas, than direct incineration disposal, can practice thrift fuel consumption greatly.
The utility model discloses flue gas after the heat accumulation formula incineration disposal divide into two sections discharges, and wherein the hot flue gas of higher temperature returns to the filter entry, mixes with pending carbide slag dust gas, and the gas will rise to above its dew point after mixing, has avoided in the carbide slag dust gas in the past steam, dust to block up the scheduling problem because of the lower dewfall of temperature leads to. The heated gas is filtered by conventional bag-type dust removal equipment, carbide slag dust in the gas is filtered for reuse, and dust-free gas after dust removal enters the heat accumulating type incinerator, so that the dust is prevented from blocking the heat accumulator, the regeneration period of the heat accumulator is prolonged, and the service life of the heat accumulator is prolonged.
The utility model discloses with the lower hot flue gas of oxygen content of carbide slag dust gas mixture, except can improving the temperature of pending exhaust gas, can also dilute the acetylene in the carbide slag dust gas, through control mixing ratio, can make the acetylene content in the carbide slag dust gas reduce to 50% of acetylene explosion lower limit, from the risk that has reduced the explosion in essence.
The utility model discloses flue gas after the high temperature burning in the regenerative combustion furnace, through with the heat accumulator heat transfer, accumulated the heat in the heat accumulator, these heats are utilized again to preheat pending gas to reach energy-conserving purpose. The low-temperature flue gas discharged from the regenerative combustion furnace is cooled to a lower level and can be directly discharged into the atmosphere. And the conventional direct incineration treatment of the discharged flue gas has high temperature, a complex waste heat recovery system is required to be arranged to reduce energy consumption, the investment is large, the operation cost is high, and products such as steam generated by recovery cannot necessarily find suitable downstream application.
The utility model discloses abundant utilization the acetylene heat that produces of burning in the carbide slag dust gas that contains acetylene, rough calculation shows, as long as have not too high acetylene content (2%) in the carbide slag transport exhaust gas, only lean on the heat that the acetylene burning produced to maintain the continuous combustion operation that the heat accumulation formula burns burning furnace, only need extra a small amount of supplementary fuel under the special operating mode such as start-stop, under all the other normal conditions, basically can not need supplementary fuel, great reduction the working costs. Has the characteristics of high treatment efficiency of carbide slag dust gas, low operating cost, safety, energy conservation, environmental protection and the like.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solution of the present invention, but not to limit the same, and certainly not to limit the scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems solved by the present invention are still consistent with the present invention, and all the modifications or colors made in the spirit and the idea of the main design of the present invention are included in the protection scope of the present invention; in addition, will the technical scheme of the utility model direct or indirect application is in other relevant technical field, all including on the same reason the utility model discloses an in the patent protection scope.
Claims (10)
1. The system for treating the tail gas containing acetylene and acetylene sludge in the process of producing acetylene by using a calcium carbide dry method is characterized in that: the device comprises a dust remover (1) connected from a carbide slag tail gas source, a heat storage type incinerator (2) connected from the dust remover (1), a hot air induced draft fan (3) connected from the heat storage type incinerator (2), a normal temperature induced draft fan (4) connected from the heat storage type incinerator (2), and a tail gas exhaust smoke window (5) connected from the normal temperature induced draft fan (4); the air outlet of the hot air induced draft fan (3) is connected to the inlet of the dust remover (1), and the heat storage type incinerator (2) is connected to a natural gas supply pipe (6).
2. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 1, characterized in that: heat accumulation formula burns burning furnace (2) including burning furnace body (21), it is equipped with at least three heat accumulator holding chamber (23) in burning furnace body (21), heat accumulator (22) have been put in heat accumulator holding chamber (23), and heat accumulator holding chamber (23) sub-unit connection has blowback gas pipe (24), tail gas conveyer pipe (25) and low temperature flue gas outer calandria (26), burning furnace body (21) the interior upper portion of establishing chamber (27) of burning, all heat accumulator holding chambers (23) are linked together through burning chamber (27).
3. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: at least one flaming burner (28) is arranged in the incineration cavity (27), and the natural gas supply pipe (6) is connected with the flaming burner (28).
4. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: the heat accumulator accommodating cavity (23) is communicated with a high-temperature flue gas external discharge pipe (29), and the high-temperature flue gas external discharge pipe (29) is connected with the hot air induced draft fan (3).
5. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 4, characterized in that: and a program control valve is arranged on the high-temperature flue gas external discharge pipe (29).
6. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: the back blowing gas pipe (24) is connected with the outlet of the dust remover (1).
7. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: and the tail gas conveying pipe (25) is connected with an outlet of the dust remover (1).
8. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: the low-temperature flue gas external discharge pipe (26) is connected with an inlet of the normal-temperature draught fan (4).
9. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: three heat accumulator accommodating cavities (23) are provided.
10. The acetylene-containing carbide slag tail gas treatment system in the acetylene dry method production process according to claim 2, characterized in that: and the back-blowing gas pipe (24), the tail gas conveying pipe (25) and the low-temperature flue gas external discharge pipe (26) are all provided with program control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368986.9U CN211847828U (en) | 2019-12-25 | 2019-12-25 | System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368986.9U CN211847828U (en) | 2019-12-25 | 2019-12-25 | System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211847828U true CN211847828U (en) | 2020-11-03 |
Family
ID=73216886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922368986.9U Active CN211847828U (en) | 2019-12-25 | 2019-12-25 | System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211847828U (en) |
-
2019
- 2019-12-25 CN CN201922368986.9U patent/CN211847828U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101837365A (en) | Integrated method and system of active carbon regeneration and hazardous waste incineration | |
| CN104141952B (en) | Extremely low concentration coal mine gas combustion device and method | |
| CN206469273U (en) | A kind of organic waste gas treatment device | |
| CN108916894A (en) | A kind for the treatment of process and device of the organic exhaust gas containing VOCs | |
| CN108036665A (en) | Carbon baking furnace flue gas pollutant thermal accumulating incinerator and its processing method | |
| CN101037193A (en) | Technology and device for producing yellow Phosphorus by electric oven process | |
| CN101352639B (en) | Organic waste gas treatment system | |
| CN108317526A (en) | A kind of organic waste gas treatment device | |
| CN102519049A (en) | Low energy consumption system for purifying and incinerating harmful gases | |
| CN201669263U (en) | Activated carbon regeneration and hazardous waste incineration integrated device | |
| CN112062435B (en) | Oil sludge pyrolysis treatment device and process thereof | |
| CN106439857B (en) | A kind of parallel connection kiln dangerous waste incineration technique | |
| CN211847828U (en) | System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method | |
| CN205535842U (en) | Two room heat accumulation after burner of domestic waste | |
| CN213977536U (en) | Novel secondary smoke recycling and dry distillation device for carbonization rotary kiln | |
| CN202598547U (en) | Waste heat recovering regenerative furnace | |
| CN206669761U (en) | Heat accumulating type oxidative system | |
| CN201437987U (en) | Waste gas incinerator | |
| CN211450931U (en) | Flameless energy-saving heat accumulating type incinerator system | |
| CN2802286Y (en) | Verticle boiler using water as fuel | |
| CN110982554A (en) | System for treating tail gas containing acetylene carbide slag in process of producing acetylene by calcium carbide dry method | |
| CN208091280U (en) | Carbon baking furnace flue gas pollutant thermal accumulating incinerator | |
| CN114151805A (en) | Method for treating coated waste gas by combining air-reducing and thickening system with RTO (regenerative thermal oxidizer) | |
| CN215766534U (en) | Tail gas waste heat recycling device of active carbon carbonization furnace | |
| CN206669762U (en) | A kind of exhaust treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |