CN110408412B - Air preheating type heat recovery coke oven - Google Patents
Air preheating type heat recovery coke oven Download PDFInfo
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- CN110408412B CN110408412B CN201910786570.0A CN201910786570A CN110408412B CN 110408412 B CN110408412 B CN 110408412B CN 201910786570 A CN201910786570 A CN 201910786570A CN 110408412 B CN110408412 B CN 110408412B
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- 239000000571 coke Substances 0.000 title claims abstract description 118
- 238000011084 recovery Methods 0.000 title claims abstract description 59
- 238000002485 combustion reaction Methods 0.000 claims abstract description 149
- 239000007789 gas Substances 0.000 claims abstract description 52
- 238000009826 distribution Methods 0.000 claims abstract description 39
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000003763 carbonization Methods 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004939 coking Methods 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000004904 shortening Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000012855 volatile organic compound Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001314 paroxysmal effect Effects 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B17/00—Preheating of coke ovens
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to an air preheating type heat recovery coke oven. The device comprises a combustion chamber, a carbonization chamber, a chute, a pressure balance chamber, a longitudinal and transverse waste gas flue and a combustion air distribution channel, wherein the chute is connected between the combustion chamber and the pressure balance chamber; the vertical and horizontal waste gas flue is arranged at the lower part of the pressure balance chamber and communicated with the pressure balance chamber; the combustion air distribution channel is arranged at the lower part of the vertical and horizontal exhaust gas flue; the air preheating vertical channel is arranged in the main wall below the combustion chamber and is communicated with the combustion air distribution channel; the combustion air channel of the vertical flame path partition wall is arranged in the vertical flame path partition wall and is communicated with the air preheating vertical channel; the outlet of the vertical flame path partition wall combustion air channel is communicated with the vertical flame path of the combustion chamber. The invention makes the combustion air evenly distributed and supplied into the vertical flame path of the combustion chamber, and makes the combustion air fully exchange heat with the high-temperature waste gas to raise temperature and then burn with the raw gas in the vertical flame path, thereby improving the burning temperature, shortening the coking time and realizing the purpose of improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of coking equipment, in particular to an air preheating type heat recovery coke oven.
Background
The coking industry is a basic industry with high pollution, high emission and high energy consumption, and is an important raw material, namely coke, for the production of the steel industry. Conventional coke ovens are an important source of pollution, with major contaminants including exhaust gases, waste water, dust, and the like. As the domestic iron and steel industry capacity tends to saturate and environmental protection becomes more stringent, the coking industry tends to phase out the post-production capacity and transformation upgrades. In the conventional coke oven, the carbonization chamber is always in a positive pressure state in the production process, so that the conditions of paroxysmal smoke overflow and the like inevitably exist, and particularly in the processes of coal loading and coke pushing, a large amount of smoke overflow causes serious pollution to the environment. In addition, in the production process, a large amount of coking sewage and Volatile Organic Compounds (VOCs) are generated by production process units such as chemical product recovery and purification, so that serious pollution is brought to the surrounding environment, and a heavy economic burden for treating the environmental pollution is brought to enterprises.
The heat recovery coke oven coking process does not have a recovery and gas purification process unit of chemical products, raw gas generated in the high-temperature carbonization process is completely combusted in the coke oven and in the exhaust gas discharge path to generate high-temperature exhaust gas, and the high-temperature exhaust gas is subjected to sensible heat recovery through a waste heat boiler and is discharged after desulfurization and denitrification. In addition, the whole system of the heat recovery coke oven is completely in a negative pressure state in the production process, so that the problems of smoke dust and Volatile Organic Compounds (VOCs) overflowing do not exist. The heat recovery coking process only produces coke and recovers heat energy, has the technical advantages of simple process flow, strong adaptability of coal types, environmental friendliness and the like, and is one of the selectable technologies for realizing energy conservation, emission reduction and building of green coking enterprises.
At present, the international heat recovery coke oven coking technology is mainly divided into two coking technologies of a horizontal heat recovery coke oven and a vertical heat recovery coke oven. Wherein, the structure and the form of the vertical heat recovery coke oven body are similar to those of a conventional coke oven, and particularly the coke oven machinery is basically consistent with that of the conventional coke oven. Therefore, the vertical heat recovery coke oven is suitable for the update and transformation of the conventional coking enterprises, the conventional coke oven is transformed, upgraded and built into the vertical heat recovery coke oven by fully utilizing the existing coke oven basic structures and coke oven machinery of the coking enterprises, and technical support can be provided for the conventional coking enterprises to realize transformation, upgrading and building of the green coking enterprises.
In the existing vertical heat recovery coke oven production process, combustion air for burning raw coke gas is sucked by the negative pressure of a coke oven body in a normal temperature and normal pressure state (natural state) and has no process of fully preheating the air, so that the combustion temperature (standard temperature-1200 ℃) of the raw coke gas in a vertical flame path is low, the coking time (36-40 hours) is longer than that of a conventional coke oven (15-26 hours), and the production efficiency is low. Therefore, the factors bring certain limit and difficulty to popularization and development of the vertical heat recovery coke oven coking process.
Disclosure of Invention
The invention provides an air preheating type recovery coke oven so as to realize the application expansion of a vertical heat recovery coke oven. The specific technical scheme is as follows: an air preheating type heat recovery coke oven comprises a combustion chamber, a carbonization chamber, a chute, a pressure balance chamber, a longitudinal and transverse waste gas flue and a combustion air distribution channel, wherein:
The combustion chamber consists of vertical flame paths, and flame path partition walls are arranged between the vertical flame paths;
the top of the carbonization chamber and the top of the combustion chamber are provided with raw gas channels;
The chute is connected between the combustion chamber and the pressure balance chamber and is used for communicating the combustion chamber with the pressure balance chamber; the pressure balance chamber is formed by dividing a main wall positioned below the combustion chamber;
the vertical and horizontal waste gas flue is arranged at the lower part of the pressure balance chamber and is communicated with the pressure balance chamber;
the combustion air distribution channel is arranged at the lower part of the longitudinal and transverse exhaust gas flue;
Further comprises:
an air preheating vertical channel which is arranged in the main wall below the combustion chamber and is communicated with the combustion air distribution channel;
The vertical flame path partition wall combustion air channel is arranged in the vertical flame path partition wall and is communicated with the air preheating vertical channel; the outlet of the vertical flame path partition wall combustion air channel is communicated with the vertical flame path of the combustion chamber.
The air preheating type heat recovery coke oven of the invention preferably further comprises a coke oven foundation, wherein the coke oven foundation is arranged at the lower part of the combustion air distribution channel;
The coke oven foundation is provided with a first combustion air inlet which is communicated with the combustion air distribution channel, and a first air flow adjusting device is detachably arranged at the upper part of the combustion air distribution channel and used for adjusting the air quantity of the combustion air supplied into the vertical flame channel.
In the air preheating type heat recovery coke oven of the present invention, preferably, the vertical flame path partition wall combustion air passage is provided with a second air flow adjusting device in the height direction for adjusting the amount of air supplied into the vertical flame path by the combustion air.
The air preheating type heat recovery coke oven of the invention preferably further comprises a second combustion air inlet, wherein the second combustion air inlet is arranged on the coke side of the coke oven and is communicated with the combustion air distribution channel.
In the air preheating type heat recovery coke oven of the present invention, preferably, the third combustion air inlet is disposed at a side of the air preheating type heat recovery coke oven, and the third combustion air inlet is communicated with the combustion air distribution channel.
In the air preheating type heat recovery coke oven, preferably, a pressure regulating device is arranged in the pressure balancing chamber and used for regulating the transverse and longitudinal pressure of the coke oven.
The air preheating type heat recovery coke oven of the present invention preferably further comprises an air introduction hole provided in the pressure balance chamber and the vertical and horizontal exhaust gas flue for introducing air.
The air preheating type heat recovery coke oven of the present invention is preferably provided with one or at least two of a grouting hole, a temperature measuring hole, a pressure measuring hole and a cleaning hole independently on the machine side and the coke side of the coke oven.
The air preheating type heat recovery coke oven of the invention preferably further comprises a vertical converging flue, wherein the vertical converging flue is connected with the longitudinal and transverse exhaust flue;
And/or, the vertical exhaust gas flue further comprises a vertical exhaust gas flue, and the vertical exhaust gas flue is connected with the vertical exhaust gas flue.
The air preheating type heat recovery coke oven of the invention preferably further comprises a furnace top;
the furnace top is provided with a diffusing outlet which is communicated with the vertical diffusing flue;
And/or the furnace roof is provided with a converging outlet which is communicated with the vertical converging flue.
The terms "focal side", "machine side" as used herein are intended to be understood generally in the art.
The invention provides a coke oven body, which ensures that combustion air is uniformly distributed and fed into a vertical flame path of a combustion chamber, and is fully heat-exchanged and heated with high-temperature waste gas to be combined with raw gas in the vertical flame path for combustion, so that the combustion temperature is increased, the coking time is shortened, and the aim of improving the production efficiency is fulfilled. By adopting the coke oven provided by the invention, the coking time can be controlled between 18 and 30 hours according to the requirements. The invention fully utilizes the flow of air in the combustion air preheating vertical channel between the coke oven foundation and the vertical and horizontal exhaust gas flue and the combustion air in the main wall below the combustion chamber, thereby not only effectively reducing the foundation temperature, but also efficiently realizing the air preheating.
The invention adopts a method of designing a combustion air distribution channel between a coke oven foundation and a vertical exhaust gas flue and designing an air preheating vertical channel in a main wall below a combustion chamber, thereby realizing the preheating of combustion air supplied from the lower part, and realizing the air reaching the designed preheating temperature according to actual needs, thereby improving the combustion temperature in the vertical flame channel and shortening the coking time. In addition, the upper part and the inlet of the combustion air distribution channel are provided with air flow adjusting devices, and the air flow adjusting devices can be taken out from the machine side or the coke side of the coke oven and sent back after the adjustment is finished, so that the accurate adjustment of the air is realized.
The invention adopts a pressure balance chamber which is arranged below the carbonization chamber and is divided by a main wall positioned below the combustion chamber, an adjusting device for adjusting the longitudinal and transverse pressure of the coke oven is arranged in the pressure balance chamber, and air inlet holes which are communicated with the pressure balance chamber are arranged on the front sides of the machine side and the coke side and are used for introducing air to burn combustible gas and correcting the pressure balance.
Of course, it is not necessary for any one product or method of practicing the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the internal structure of an air preheating type recovery coke oven according to the present invention;
FIG. 2 is a side view showing the internal structure of an air preheating type recovery coke oven according to the present invention;
The reference numerals are as follows:
X is the machine side; y: a focal side;
101: a combustion chamber;
102: a carbonization chamber;
103: a chute;
104: a pressure balancing chamber;
105: a vertical and horizontal exhaust gas flue;
106: a combustion air distribution duct;
107: a raw gas channel;
108: air pre-heating the vertical channel;
109: a vertical flame path partition wall combustion air channel;
110: a coke oven foundation;
111: a first combustion air inlet;
112: a first air flow rate adjustment device;
113: a second combustion air inlet;
114: a third combustion air inlet;
115: a pressure regulating device;
116: an air introduction hole;
117: grouting holes;
118: a temperature measuring hole;
119: a pressure measuring hole;
120: cleaning the hole;
121: vertically converging the flue;
122: vertical diffusing flue
123: A furnace roof;
124: a discharge outlet;
125: and a junction outlet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, the present embodiment provides an air preheating type heat recovery coke oven, which includes a combustion chamber 101, a carbonization chamber 102, a chute 103, a pressure balancing chamber 104, a vertical and horizontal exhaust gas flue 105 and a combustion air distribution channel 106, wherein:
The combustion chamber 101 consists of vertical flame paths, and flame path partition walls are arranged between the vertical flame paths;
The top of the carbonization chamber 102 and the top of the combustion chamber 101 are provided with a raw gas channel 107;
the chute 103 is connected between the combustion chamber 101 and the pressure balance chamber 104, and communicates the combustion chamber 101 and the pressure balance chamber 104; the pressure balance chamber 104 is partitioned by a main wall located below the combustion chamber 101;
The vertical and horizontal waste gas flue 105 is arranged at the lower part of the pressure balance chamber 104 and is communicated with the pressure balance chamber 104;
The combustion air distribution channel 106 is arranged at the lower part of the longitudinal and transverse exhaust gas flue 105;
Further comprises:
an air preheating upstanding passage 108 provided in the main wall below the combustion chamber 101 and communicating with the combustion air distribution duct 106;
A vertical flame path partition wall combustion air passage 109 provided in the vertical flame path partition wall and communicating with the air preheating vertical passage 108; the outlet of the vertical flame path partition combustion air passage 109 communicates with the vertical flame path of the combustion chamber 101.
By way of explanation, fig. 1 is a side view of an air preheating type heat recovery coke oven provided by the present embodiment.
Thus, when the air preheating type heat recovery coke oven is used, combustion air is blown in by positive pressure of a blower or sucked into the combustion air distribution channel 106 by negative pressure of the coke oven; the air passing through the upper part of the combustion air distribution channel 106 preheats the vertical channel 108, flows to the vertical channel partition wall combustion air channel 109, flows and is preheated at the same time, and finally is supplied into the vertical channel of the combustion chamber 101 to be combined with the raw gas for combustion.
Raw gas generated in the high-temperature carbonization process of coal in the carbonization chamber 102 enters the vertical flame path through the top space of the carbonization chamber 102 and the raw gas channel 107 at the top of the vertical flame path of the combustion chamber 101, and is converged with air for combustion; the high-temperature waste gas after combustion enters a pressure balancing chamber 104 below the carbonization chamber 102 through a chute 103, and enters a longitudinal and transverse waste gas flue 105 at the lower part after pressure balancing; the high temperature exhaust gas after combustion in each combustion chamber 101 is collected in the vertical and horizontal exhaust gas flue 105 to continuously supply heat to the air preheating vertical channels 108.
The air preheating type heat recovery coke oven according to the present embodiment preferably further includes a coke oven base 110, wherein the coke oven base 110 is disposed at a lower portion of the combustion air distribution duct 106;
the coke oven foundation 110 is provided with a first combustion air inlet 111, the first combustion air inlet 111 is communicated with the combustion air distribution channel 106, a first air flow regulating device 112 is detachably arranged at the upper part of the combustion air distribution channel 106, and the first air flow regulating device 112 is used for regulating the air quantity of the combustion air fed into the vertical flame path.
Thus, the use of the first air flow adjustment allows the combustion air to flow evenly from the combustion air distribution duct 106 and be distributed to a plurality of different flame paths. And a first air flow regulating device 112 is removably mounted on the upper part of said combustion air distribution duct 106, which can be mounted or removed from the side of the coke oven or from the coke side, to meet the air quantity regulation requirements. The combustion air distribution duct 106 is positioned to both distribute and regulate the flow of combustion air and to reduce the temperature of the coke oven bed 110. The air preheating type heat recovery coke oven according to the present embodiment is preferably provided with a second air flow adjustment means for adjusting the amount of air supplied to the vertical flame path in the height direction of the vertical flame path partition combustion air passage 109. Thus, the amount of combustion air flowing from the air preheating upright passage 108 to the flame path partition wall combustion air passage 109 can be controlled using the second air flow rate adjusting means.
The air preheating type heat recovery coke oven according to the present embodiment preferably further includes a second combustion air inlet 113, the second combustion air inlet 113 is disposed at a coke side of the coke oven, and the second combustion air inlet 113 is in communication with the combustion air distribution duct 106.
The "focal side", "machine side" described in this embodiment is a general understanding in the art.
The air preheating type heat recovery coke oven according to the present embodiment preferably further includes a third combustion air inlet 114, the third combustion air inlet 114 is disposed at a side of the air preheating type heat recovery coke oven, and the third combustion air inlet 114 is in communication with the combustion air distribution duct 106.
Thus, the plurality of different combustion air inlets may continuously vent to the combustion air distribution channel 106.
The air preheating type heat recovery coke oven according to the present embodiment preferably has a pressure adjusting device 115 disposed inside the pressure balancing chamber 104 for adjusting the lateral and longitudinal pressures of the coke oven. Thus, the gas burned in the flame path of the combustion chamber 101 flows into the pressure balance chamber 104 through the chute 103, and the gas pressure of the high-temperature exhaust gas can be stabilized.
The air preheating type heat recovery coke oven according to the present embodiment preferably further includes an air introduction hole 116, and the air introduction hole 116 is provided in the pressure balance chamber 104 and the vertical and horizontal exhaust gas flue 105 for introducing air. Thus, the pressure balance chamber 104 and the vertical and horizontal exhaust gas flue 105 are provided with air, so that the combustible gas which is not fully combusted in the vertical flame path of the combustion chamber 101 can be further combusted in the pressure balance chamber 104 and the vertical and horizontal exhaust gas flue 105, thereby ensuring the full utilization of raw materials and avoiding gas pollution. Furthermore, the air introduction hole 116 may be introduced with air to assist in balance correction of pressure.
The air preheating type heat recovery coke oven according to the present embodiment may be provided with the air introduction hole 116 on the coke side and/or the machine side of the coke oven.
The air preheating type heat recovery coke oven according to the present embodiment is preferably provided with one or at least two of a grouting hole 117, a temperature measurement hole 118, a pressure measurement hole 119 and a cleaning hole 120, independently of each of the machine side and the coke side of the coke oven.
Therefore, grouting, temperature measurement, pressure measurement and cleaning of the coke oven can be conveniently realized.
The air preheating type heat recovery coke oven according to the present embodiment preferably further comprises a vertical merging flue 121, wherein the vertical merging flue 121 is connected with the longitudinal and transverse exhaust flue 105;
And/or further comprising an upstanding bleed duct 122, the upstanding bleed duct 122 being connected to the longitudinal and transverse exhaust duct 105.
The air preheating type heat recovery coke oven according to the present embodiment preferably further includes a furnace roof 123;
the furnace roof 123 is provided with a diffusing outlet 124, and the diffusing outlet 124 is communicated with the vertical diffusing flue 122;
And/or the furnace roof 123 is provided with a merging outlet 125, the merging outlet 125 being in communication with the upright merging flue 121.
Thus, the exhaust gas is collected in the vertical and horizontal exhaust gas flue 105 and is led out to the waste heat boiler or is directly diffused from the top 123 of the coke oven through the vertical and horizontal converging flue 121 or the vertical diffusing flue 122 in the two end walls of the coke oven.
The embodiment provides a coke oven body, which ensures that combustion air is uniformly distributed and supplied into a vertical flame path of a combustion chamber 101, and is fully heat-exchanged and heated with high-temperature waste gas to be combined with raw gas for combustion in the vertical flame path, so that the combustion temperature is increased, the coking time is shortened, and the aim of improving the production efficiency is fulfilled. By adopting the coke oven provided by the invention, the coking time can be controlled between 18 and 30 hours according to the requirements. The invention fully utilizes the flow of air in the combustion air preheating vertical channel 108 in the main wall below the combustion chamber 101 and the combustion air distribution channel 106 between the coke oven foundation 110 and the vertical and horizontal exhaust gas flue 105, thereby not only effectively reducing the foundation temperature, but also efficiently realizing the air preheating.
The invention adopts a method of designing the combustion air distribution channel 106 between the coke oven foundation 110 and the vertical exhaust gas flue 105 and designing the air preheating vertical channel 108 in the main wall below the combustion chamber 101, thereby realizing the preheating of the combustion air supplied from the lower part, and realizing the air reaching the designed preheating temperature according to the actual requirement, thereby improving the combustion temperature in the vertical flame path and shortening the coking time. In addition, the upper part and the inlet of the combustion air distribution channel 106 are provided with air flow adjusting devices, and the air flow adjusting devices can be taken out from the machine side or the coke side of the coke oven, and sent back after the adjustment is finished, so that the accurate adjustment of the air is realized.
The invention adopts a pressure balance chamber 104 which is arranged below a carbonization chamber 102 and is divided by a main wall positioned below a combustion chamber 101, wherein an adjusting device for adjusting longitudinal and transverse pressure of a coke oven is arranged in the pressure balance chamber, and air inlet holes 116 are arranged on the front of the machine side and the coke side and are communicated with the pressure balance chamber 104 for introducing air combustion combustible gas and correcting pressure balance.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
While the invention has been described in detail in the foregoing general description, embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides an air preheating type heat recovery coke oven which characterized in that includes combustion chamber, carbonization chamber, chute, pressure balance chamber, vertically and horizontally waste gas flue and combustion air distribution way, wherein:
The combustion chamber consists of vertical flame paths, and flame path partition walls are arranged between the vertical flame paths;
the top of the carbonization chamber and the top of the combustion chamber are provided with raw gas channels;
The chute is connected between the combustion chamber and the pressure balance chamber and is used for communicating the combustion chamber with the pressure balance chamber; the pressure balance chamber is formed by dividing a main wall positioned below the combustion chamber;
the vertical and horizontal waste gas flue is arranged at the lower part of the pressure balance chamber and is communicated with the pressure balance chamber;
the combustion air distribution channel is arranged at the lower part of the longitudinal and transverse exhaust gas flue;
Further comprises:
an air preheating vertical channel which is arranged in the main wall below the combustion chamber and is communicated with the combustion air distribution channel;
the vertical flame path partition wall combustion air channel is arranged in the vertical flame path partition wall and is communicated with the air preheating vertical channel; the outlet of the vertical flame path partition wall combustion air channel is communicated with the vertical flame path of the combustion chamber;
The air preheating type heat recovery coke oven further comprises an air introduction hole, wherein the air introduction hole is arranged in the pressure balancing chamber and the vertical and horizontal exhaust gas flue and is used for introducing air.
2. The air preheating type heat recovery coke oven according to claim 1, further comprising a coke oven foundation provided at a lower portion of the combustion air distribution duct;
The coke oven foundation is provided with a first combustion air inlet which is communicated with the combustion air distribution channel, and a first air flow adjusting device is detachably arranged at the upper part of the combustion air distribution channel and used for adjusting the air quantity of the combustion air supplied into the vertical flame channel.
3. The air preheating type heat recovery coke oven according to claim 1 or 2, wherein the vertical flame path partition combustion air passage is provided with a second air flow rate adjusting means in a height direction for adjusting an amount of the combustion air supplied to the vertical flame path.
4. The air preheating type heat recovery coke oven according to claim 1 or 2, further comprising a second combustion air inlet provided on the coke side of the air preheating type heat recovery coke oven, and the second combustion air inlet communicates with a combustion air distribution duct.
5. The air preheating type heat recovery coke oven according to claim 1 or 2, further comprising a third combustion air inlet provided on a side of the air preheating type heat recovery coke oven, and the third combustion air inlet communicates with a combustion air distribution duct.
6. The air preheating type heat recovery coke oven according to claim 1 or 2, wherein the pressure balance chamber is internally provided with a pressure adjusting means for adjusting the lateral and longitudinal pressures.
7. The air preheating type heat recovery coke oven according to claim 1 or 2, wherein the machine side and the coke side of the air preheating type heat recovery coke oven are each independently provided with one or at least two of a grouting hole, a temperature measuring hole, a pressure measuring hole and a cleaning hole.
8. The air preheating type heat recovery coke oven according to claim 1 or 2, further comprising a vertical merging flue connected to the longitudinal and transverse exhaust flue;
And/or, the vertical exhaust gas flue further comprises a vertical exhaust gas flue, and the vertical exhaust gas flue is connected with the vertical exhaust gas flue.
9. The air preheating type heat recovery coke oven according to claim 8, further comprising a furnace roof;
the furnace top is provided with a diffusing outlet which is communicated with the vertical diffusing flue;
And/or the furnace roof is provided with a converging outlet which is communicated with the vertical converging flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786570.0A CN110408412B (en) | 2019-08-23 | 2019-08-23 | Air preheating type heat recovery coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786570.0A CN110408412B (en) | 2019-08-23 | 2019-08-23 | Air preheating type heat recovery coke oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110408412A CN110408412A (en) | 2019-11-05 |
| CN110408412B true CN110408412B (en) | 2024-07-23 |
Family
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| CN111876164A (en) * | 2020-08-19 | 2020-11-03 | 鞍山华泰环能工程技术有限公司 | Coke oven roof structure and coke oven |
| CN114437740A (en) * | 2022-01-12 | 2022-05-06 | 华泰永创(北京)科技股份有限公司 | Coke oven system and method for operating the same |
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