CN113528163A - Dry quenching device - Google Patents

Dry quenching device Download PDF

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Publication number
CN113528163A
CN113528163A CN202111025994.9A CN202111025994A CN113528163A CN 113528163 A CN113528163 A CN 113528163A CN 202111025994 A CN202111025994 A CN 202111025994A CN 113528163 A CN113528163 A CN 113528163A
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CN
China
Prior art keywords
air
dry quenching
quenching device
control system
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111025994.9A
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Chinese (zh)
Inventor
姜士敏
石巧囡
王磊
王奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anshan Huatai Huaneng Engineering Technology Co ltd
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Anshan Huatai Huaneng Engineering Technology Co ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Anshan Huatai Huaneng Engineering Technology Co ltd filed Critical Anshan Huatai Huaneng Engineering Technology Co ltd
Priority to CN202111025994.9A priority Critical patent/CN113528163A/en
Publication of CN113528163A publication Critical patent/CN113528163A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00Cooling or quenching coke
    • C10B39/02Dry cooling outside the oven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Abstract

The embodiment of the application provides a dry quenching device, including: circulation pipeline and set gradually dry out stove, primary dust remover, exhaust-heat boiler, secondary dust remover and the heat exchanger on circulation pipeline, wherein: a first air inlet and an air introducing device are arranged between the outlet of the dry quenching furnace and the inlet of the waste heat boiler, and the air introducing device is configured to introduce outdoor air into the circulating pipeline from the first air inlet; and a second air inlet is arranged on the dry quenching furnace. The embodiment of the application can enable the air introduction method to be better suitable for large-scale dry quenching devices.

Description

Dry quenching device
Technical Field
The application relates to the technical field of coal coking, in particular to a dry quenching device.
Background
Dry Quenching (CDQ), which is a relatively wet quenching method, refers to a quenching method for cooling incandescent coke by using inert gas.
In the production process of the coke dry quenching device, in order to ensure the safety of a gas circulation system of the coke dry quenching device, the concentration of combustible components in the circulating gas must be effectively controlled. There are generally two methods for controlling the concentration of combustible components in the recycle gas within a safe range: one is a nitrogen dilution method in which a certain amount of nitrogen is continuously supplied to a gas circulation system; the other method is an air introduction method, namely, air is introduced into an annular air duct of the dry quenching furnace to combust combustible components. However, the method of introducing air is more economical, and is advantageous in increasing the temperature at the inlet of the boiler and increasing the steam production of the boiler, and thus is widely used.
The air leading-in mode of the existing dry quenching device is basically arranged at the annular air duct, and the air is led into the annular air duct of the dry quenching furnace through a metal pipeline by utilizing the negative pressure of the annular air duct of the dry quenching furnace or the power provided by a fan and is mixed with combustible components CO and H in the circulating gas2The combustible components are closely related to red coke volatile components and coke powder and coke quality, and along with the development of large-scale coke ovens, the scale of a coke dry quenching device matched with the coke dry quenching device is also increased, the existing air introduction amount is greatly increased, the fluctuation is also increased, and certain influence is caused on the production stability of the coke dry quenching device. How to make the air introduction method better adapt to large-scale dry quenching devices is a technical problem to be solved urgently at present.
Disclosure of Invention
An object of the embodiment of the application is to provide a dry quenching device, so that an air introducing method is better suitable for a large-scale dry quenching device. The specific technical scheme is as follows:
according to an aspect of an embodiment of the present application, there is provided a dry quenching device including: circulation pipeline and set gradually dry out stove, primary dust remover, exhaust-heat boiler, secondary dust remover and the heat exchanger on the circulation pipeline, wherein:
a first air inlet and an air introducing device are arranged between the outlet of the dry quenching furnace and the inlet of the waste heat boiler, and the air introducing device is configured to introduce outdoor air into the circulating pipeline from the first air inlet;
and a second air inlet is arranged on the dry quenching furnace.
According to the dry quenching device provided by the embodiment of the application, the first air inlet and the air introducing device are arranged between the outlet of the dry quenching furnace and the inlet of the waste heat boiler, and the second air inlet is arranged on the dry quenching furnace, so that when air needs to be introduced into the dry quenching device, a part of air can be introduced from the second air inlet, and a part of air can be introduced at the first air inlet, so that the total amount of the air introduced at the two air inlets can be subjected to sufficient combustion reaction with the gas to be treated in the circulating pipeline, the concentration of the gas to be treated in the dry quenching device can be effectively controlled, and the total air amount can meet the large-scale dry quenching device.
In some embodiments, the dry quenching device further comprises a first air line disposed on the primary dust collector, the first air inlet and the air introduction device both being disposed on the first air line.
In some embodiments, the air introduction device is a variable frequency fan.
In some embodiments, the dry quenching device further comprises a second air line disposed on the dry quenching furnace, and a regulating valve disposed on the second air line, the second air inlet being disposed on the second air line.
In some embodiments, the dry quenching device further comprises a control system electrically connected to the regulating valve, the control system being configured to control the flow rate of the regulating valve such that the air flow rate on the second air line is a predetermined value.
In some embodiments, the dry quenching device further comprises a gas detection device for detecting the concentration of the gas to be treated in the circulation line, the gas detection device being electrically connected with the control system.
In some embodiments, the control system is electrically connected to the variable frequency fan, and the control system is further configured to control a rotational speed of the variable frequency fan such that an air flow rate at the first air inlet varies with a concentration of the gas to be treated.
In some embodiments, the dry quenching device further comprises a first flow meter disposed on the first air line, the first flow meter being electrically connected to the control system.
In some embodiments, the dry quenching device further comprises a second flow meter disposed on the second air line, the second flow meter being electrically connected to the control system.
In some embodiments, the regulating valve is a pneumatic butterfly valve or an electric butterfly valve.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dry quenching device according to an embodiment of the application.
Icon: 1-a circulation line; 2-dry quenching; 21-a second air inlet; 22-a second air line; 23-a regulating valve; 24-an annular air duct; 25-air distribution device; 3-primary dust remover; 31-a first air inlet; 32-a first air line; 4, a waste heat boiler; 5-a secondary dust remover; 6-a heat exchanger; 7-air introduction means; 8-a circulating fan; 9-a first flow meter; 10-second flow meter.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
As shown in fig. 1, an embodiment of the present application provides a dry quenching device, including: circulation pipeline 1 and set gradually dry out stove 2, primary dust remover 3, exhaust-heat boiler 4, secondary dust remover 5 and heat exchanger 6 on circulation pipeline 1, wherein: a first air inlet 31 and an air introduction device 7 are arranged between the outlet of the dry quenching furnace 2 and the inlet of the waste heat boiler 4, and the air introduction device 7 is configured to introduce outdoor air into the circulation pipeline 1 from the first air inlet 31; a second air inlet 21 is provided in the dry quenching furnace 2.
According to the dry quenching device provided by the embodiment of the application, the first air inlet 31 and the air introducing device 7 are arranged between the outlet of the dry quenching furnace 2 and the inlet of the waste heat boiler 4, and the second air inlet 21 is arranged on the dry quenching furnace 2, so that when air needs to be introduced into the dry quenching device, a part of air can be introduced from the second air inlet 21, and a part of air is introduced at the first air inlet 31, so that the total amount of the air introduced at the two air inlets can be subjected to sufficient combustion reaction with the gas to be treated in the circulating pipeline 1, the concentration of the gas to be treated in the dry quenching device can be effectively controlled, and the total air amount can meet the dry quenching device with larger size.
Further, the dry quenching device also comprises a circulating fan 8 arranged on the circulating pipeline 1, and the circulating fan 8 is arranged between the secondary dust remover 5 and the heat exchanger 6.
As shown in fig. 1, in some embodiments of the present application, the coke dry quenching device further comprises a first air line 32 provided on the primary dust collector 3, and the first air inlet 31 and the air introduction device 7 are both provided on the first air line 32. The high-temperature gas generated in the dry quenching furnace 2 flows to the primary duster 3 and then to the exhaust heat boiler 4, and thus, when the first air inlet 31 is provided on the primary duster 3, the air introduced from the first air inlet 31 can enter the primary duster 3,and the air enters the waste heat boiler 4 through a pipeline between the primary dust remover 3 and the waste heat boiler 4, and in the process, the air can be fully combusted with the gas to be treated in the circulating pipeline 1, so that the introduced air can be fully utilized, and the concentration of the gas to be treated is reduced. Wherein the gas to be treated is a combustible component in the circulation line 1, such as CO, H2And the like.
In further exemplary embodiments of the application, a first air line 32 is arranged on the line between the outlet of the dry quenching furnace 2 and the inlet of the primary precipitator 3, or a first air line 32 is arranged on the line between the outlet of the primary precipitator 3 and the waste heat boiler 4.
As shown in fig. 1, in some embodiments of the present application, the air introduction device 7 is a variable frequency fan. In this way, by changing the rotational speed of the inverter fan, the flow rate of air introduced from the first air inlet 31 can be changed. Because inside the dry quenching device, except that the gas to be treated and the air generate a combustion reaction, the coke powder carried in the high-temperature gas also can generate a combustion reaction with the air, the introduced air may not be matched with the required air, the situation that the gas to be treated is fully combusted may exist, and the situation that the gas to be treated is not fully combusted may also exist, therefore, the concentration of the gas to be treated floats within a certain range, and the variable frequency fan can enable the dry quenching device to better adapt to the change of the concentration of the gas to be treated.
As shown in fig. 1, in some embodiments of the present application, the dry quenching device further comprises a second air line 22 disposed in the dry quenching furnace 2, and a regulating valve 23 disposed on the second air line 22, and the second air inlet 21 is disposed on the second air line 22. In this way, the air introduced from the second air inlet 21 can enter the dry-quenching furnace 2 and generate a combustion reaction with the gas to be treated in the dry-quenching furnace 2. In addition, the air flow rate of the second air pipeline 22 can be adjusted through the adjusting valve 23, so that the coke dry quenching device with various processing capacities can be adapted to the embodiment of the application.
Further, an annular air duct 24 is arranged on the dry quenching furnace 2, and the second air pipeline 22 is arranged on the annular air duct 24. The air distribution device 25 is arranged inside the dry quenching furnace 2, so that the annular air duct 24 of the dry quenching furnace 2 has a certain negative pressure, the negative pressure can suck air outside the dry quenching device from the second air pipeline 22 to the annular air duct 24, and the air and the gas to be treated in the dry quenching furnace generate combustion reaction. Therefore, the embodiment of the application adopts two pressure operation modes of negative pressure suction and positive pressure blowing, air is guided into the high-temperature section of the coke dry quenching device and is fully combusted with the gas to be treated in the circulating pipeline 1, and the safety of the gas circulating system of the coke dry quenching device is ensured.
Furthermore, the second air line 22 is connected to the dry quenching furnace 2 via a distributor box, which has a plurality of outlet lines, each of which is connected to a different location of an annular air duct 24 of the dry quenching furnace 2.
In some embodiments of the present application, the dry quenching device further comprises a control system (not shown in fig. 1) electrically connected to the regulating valve 23, the control system being configured to control the flow rate of the regulating valve 23 such that the air flow rate on the second air line 22 is a predetermined value. In this way, the air flow rate entering the annular air duct 24 of the dry quenching furnace 2 is a fixed value, so that the pressure generated on the annular air duct 24 is stable in the process of air passing through the annular air duct 24, and the temperature field of the annular air duct 24 is stable.
In addition, because the air is respectively introduced into the dry quenching device from the two air inlets in the embodiment of the application, the situation that the pressure fluctuation at the position of the dry quenching chute is large due to the fact that a large amount of air with variable flow enters the annular air duct 24 of the dry quenching furnace 2 can be avoided, the heat exchange uniformity of coke distributed in the cooling section of the dry quenching furnace 2 along the radial direction is influenced, and meanwhile, the temperature fluctuation of materials around the air path at the position of the annular air duct 24 is also reduced. That is to say, the embodiment of the application can ensure that the damage of the annular air duct 24 caused by frequent changes of the pressure borne by the annular air duct 24 is reduced on the basis of controlling the concentration of the gas to be treated in the safety range, and the service life of the dry quenching furnace 2 is prolonged.
Further, an operation panel is provided in the control system, and the degree of opening and closing of the regulating valve 23 can be controlled by the operation panel, thereby controlling the air flow rate in the second air line 22.
In some embodiments of the present application, the dry quenching device further comprises a gas detection device (not shown in fig. 1) for detecting the concentration of the gas to be treated in the circulation line 1, the gas detection device being electrically connected to the control system. In this way, after the gas detection device detects the concentration of the gas to be treated, the concentration information is sent to the control system, and an operator can know the concentration of the gas to be treated, so that the opening of the regulating valve 23 is adjusted according to the concentration of the gas to be treated, and the air flow on the second air pipeline 22 can be matched with the concentration of the gas to be treated.
In some embodiments of the present application, as shown in fig. 1, the control system is electrically connected to the variable frequency fan, and the control system is further configured to control the rotational speed of the variable frequency fan such that the air flow rate at the first air inlet 31 varies with the concentration of the gas to be treated. The gas detection device can send concentration information to the control system, which displays the gas concentration information to the operator who, based on the concentration information, determines the required air quantity, one of which is taken up by the first air line 32 and the other of which is taken up by the second air line 22, and distributes this air quantity, so that the total quantity of air entering the circulation line 1 can be matched to the required air. And the air flow at the first air inlet 31 can be changed along with the change of the concentration of the gas to be treated by controlling the variable frequency motor through the control system, so that the air introduced into the circulating pipeline 1 can be better adapted to the change of the concentration of the gas to be treated.
As shown in fig. 1, in some embodiments of the present application, the dry quenching device further includes a first flow meter 9 disposed on the first air line 32, the first flow meter 9 being electrically connected to the control system. In this way, the first flowmeter 9 can detect the air flow on the first air pipeline 32 in real time and send the air flow to the control system, so as to adjust the rotating speed of the variable frequency fan according to the air flow, so that the actual flow meets the preset requirement.
As shown in fig. 1, in some embodiments of the present application, the dry quenching device further includes a second flow meter 10 disposed on the second air line 22, the second flow meter 10 being electrically connected to the control system. In this way, the second flowmeter 10 is able to detect in real time the air flow on the second air line 22 and send this air flow to the control system, in order to adjust the opening of the regulating valve 23 according to this air flow so that the actual flow meets the preset requirements.
Further, the first flow meter 9 and the second flow meter 10 may each be a mass flow meter or an orifice plate flow meter.
As shown in FIG. 1, in some embodiments of the present application, the regulator valve 23 is a pneumatic butterfly valve or an electric butterfly valve. The starting butterfly valve has the characteristics of simple structure, light weight, low cost and the like, so that the coke dry quenching device disclosed by the embodiment of the application also has the characteristics of simple structure, light weight, low cost and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims (10)

1. A dry quenching device, comprising: circulation pipeline and set gradually dry out stove, primary dust remover, exhaust-heat boiler, secondary dust remover and the heat exchanger on the circulation pipeline, wherein:
a first air inlet and an air introducing device are arranged between the outlet of the dry quenching furnace and the inlet of the waste heat boiler, and the air introducing device is configured to introduce outdoor air into the circulating pipeline from the first air inlet;
and a second air inlet is arranged on the dry quenching furnace.
2. The dry quenching device of claim 1, further comprising a first air line disposed on the primary dust collector, the first air inlet and the air introduction device both being disposed on the first air line.
3. The dry quenching device of claim 1, wherein the air introduction device is a variable frequency fan.
4. The dry quenching device of claim 3, further comprising a second air line disposed in the dry quenching furnace, and a regulating valve disposed on the second air line, the second air inlet disposed on the second air line.
5. The dry quenching device of claim 4, further comprising a control system electrically connected to the regulating valve, the control system for controlling the flow of the regulating valve to bring the air flow on the second air line to a predetermined value.
6. The dry quenching device of claim 5, further comprising a gas detection device for detecting a concentration of a gas to be treated in the circulation line, the gas detection device being electrically connected to the control system.
7. The dry quenching device of claim 6, wherein the control system is electrically connected to the variable frequency fan, the control system further being configured to control the rotational speed of the variable frequency fan such that the air flow rate at the first air inlet varies with the concentration of the gas to be treated.
8. The dry quenching device of claim 5, further comprising a first flow meter disposed on the first air line, the first flow meter being electrically connected to the control system.
9. The dry quenching device of claim 5, further comprising a second flow meter disposed on the second air line, the second flow meter being electrically connected to the control system.
10. The dry quenching device of claim 4, wherein the regulating valve is a pneumatic butterfly valve or an electric butterfly valve.
CN202111025994.9A 2021-09-02 2021-09-02 Dry quenching device Pending CN113528163A (en)

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Application Number Priority Date Filing Date Title
CN202111025994.9A CN113528163A (en) 2021-09-02 2021-09-02 Dry quenching device

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Application Number Priority Date Filing Date Title
CN202111025994.9A CN113528163A (en) 2021-09-02 2021-09-02 Dry quenching device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114281115A (en) * 2021-12-31 2022-04-05 山东元森冶金低碳工程技术有限公司 Dry quenching air introduction control method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5202751B1 (en) * 2012-09-13 2013-06-05 新日鉄住金エンジニアリング株式会社 Coke dry fire extinguishing equipment
CN211199118U (en) * 2019-10-14 2020-08-07 西安华江环保科技股份有限公司 Device for effectively reducing large-scale dry quenching coke burning loss rate
CN112048322A (en) * 2020-09-03 2020-12-08 西安华江环保科技股份有限公司 Composite air introduction device and method for dry quenching
CN213835156U (en) * 2020-12-10 2021-07-30 山西安泰集团股份有限公司 Dry quenching device for reducing burning loss rate
CN215757155U (en) * 2021-09-02 2022-02-08 鞍山华泰环能工程技术有限公司 Dry quenching device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5202751B1 (en) * 2012-09-13 2013-06-05 新日鉄住金エンジニアリング株式会社 Coke dry fire extinguishing equipment
CN211199118U (en) * 2019-10-14 2020-08-07 西安华江环保科技股份有限公司 Device for effectively reducing large-scale dry quenching coke burning loss rate
CN112048322A (en) * 2020-09-03 2020-12-08 西安华江环保科技股份有限公司 Composite air introduction device and method for dry quenching
CN213835156U (en) * 2020-12-10 2021-07-30 山西安泰集团股份有限公司 Dry quenching device for reducing burning loss rate
CN215757155U (en) * 2021-09-02 2022-02-08 鞍山华泰环能工程技术有限公司 Dry quenching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114281115A (en) * 2021-12-31 2022-04-05 山东元森冶金低碳工程技术有限公司 Dry quenching air introduction control method

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