CN115751318A - Gas heating device and method - Google Patents
Gas heating device and method Download PDFInfo
- Publication number
- CN115751318A CN115751318A CN202211502195.0A CN202211502195A CN115751318A CN 115751318 A CN115751318 A CN 115751318A CN 202211502195 A CN202211502195 A CN 202211502195A CN 115751318 A CN115751318 A CN 115751318A
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- furnace
- gas
- conveying
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
Abstract
The invention discloses a gas heating device and a method, wherein the gas heating device comprises a heat accumulating type heating furnace, a heat exchange mechanism, a burning furnace gas conveying mechanism, a combustion air conveying mechanism and a flue gas conveying mechanism, wherein the burning furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism are all communicated with the heat accumulating type heating furnace, and are all connected in parallel; the burning furnace gas conveying mechanism is used for conveying burning furnace gas into the heat accumulating type heating furnace, the combustion-supporting air conveying mechanism is used for conveying combustion-supporting air into the heat accumulating type heating furnace, and the flue gas conveying mechanism is used for outputting flue gas flowing out of the heat accumulating type heating furnace; the heat exchange mechanism is connected in series with the burning furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange mechanism can increase the temperature of the burning furnace gas and the combustion air. So set up, can improve the combustion efficiency of regenerative heating furnace greatly.
Description
Technical Field
The invention relates to the technical field of gas heating, in particular to a gas heating device and a gas heating method.
Background
At present, generally heat the explosive coal gas of high pressure through heat exchanger formula heating furnace, but heat through above-mentioned heating furnace, the temperature of coal gas generally can only reach about 200 ℃, can not satisfy the production demand, consequently, some enterprises begin to try to adopt the regenerative heating furnace to heat the explosive coal gas of high pressure, but, when adopting the regenerative heating furnace to heat the explosive coal gas of high pressure, directly let in the heating furnace with the explosive coal gas of high pressure usually, thereby lead to the heating efficiency of heating furnace to reduce.
Therefore, how to effectively improve the combustion efficiency of the heating furnace is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a gas heating device, which can effectively improve the heating efficiency of a heating furnace.
The invention also aims to provide a gas heating method.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas heating device comprises a heat accumulating type heating furnace, a heat exchange mechanism, a burning furnace gas conveying mechanism, a combustion-supporting air conveying mechanism and a flue gas conveying mechanism, wherein the burning furnace gas conveying mechanism, the combustion-supporting air conveying mechanism and the flue gas conveying mechanism are all communicated with the heat accumulating type heating furnace, and the burning furnace gas conveying mechanism, the combustion-supporting air conveying mechanism and the flue gas conveying mechanism are all connected in parallel;
the furnace burning gas conveying mechanism is used for conveying furnace burning gas into the heat accumulating type heating furnace, the combustion-supporting air conveying mechanism is used for conveying combustion-supporting air into the heat accumulating type heating furnace, and the flue gas conveying mechanism is used for outputting flue gas flowing out of the heat accumulating type heating furnace;
the heat exchange mechanism is connected in series with the burning furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange mechanism can increase the temperature of the burning furnace gas and the temperature of the combustion air.
Preferably, the system also comprises a high-pressure explosive low-temperature gas conveying mechanism and a high-pressure explosive high-temperature gas conveying mechanism, wherein the high-pressure explosive low-temperature gas conveying mechanism and the high-pressure explosive high-temperature gas conveying mechanism are both communicated with the regenerative heating furnace;
the high-pressure explosive low-temperature coal gas conveying mechanism is used for conveying high-pressure explosive low-temperature coal gas into the heat accumulating type heating furnace, and the high-pressure explosive high-temperature coal gas conveying mechanism is used for outputting the high-pressure explosive high-temperature coal gas in the heat accumulating type heating furnace.
Preferably, the burning furnace gas conveying mechanism comprises a burning furnace gas conveying main pipeline, a burning furnace gas conveying branch pipeline, a first double-gate-plate gate valve, a first cut-off valve and a first regulating valve, one end of the burning furnace gas conveying main pipeline is communicated with burning furnace gas, the other end of the burning furnace gas conveying main pipeline is communicated with one end of the burning furnace gas conveying branch pipeline, the other end of the burning furnace gas conveying branch pipeline is communicated with the heat accumulating type heating furnace, and the first double-gate-plate gate valve, the first cut-off valve and the first regulating valve are all arranged on the burning furnace gas conveying branch pipeline.
Preferably, the furnace-burning gas conveying mechanism further comprises a first nitrogen protection assembly and a first diffusion assembly;
the first nitrogen protection component comprises a first nitrogen conveying pipeline and a first nitrogen purging valve, the first nitrogen conveying pipeline is arranged between the first double gate valve and the first cut-off valve and communicated with the furnace gas conveying pipeline, and the first nitrogen purging valve is arranged on the first nitrogen conveying pipeline;
first diffuse subassembly includes first diffuse pipeline and first diffuse valve, first diffuse pipeline set up in first double gate valve with between the first cut-off valve, and with stove coal gas conveying pipeline is linked together, first diffuse valve set up in on the first diffuse pipeline.
Preferably, the combustion-supporting air conveying mechanism comprises a combustion-supporting air conveying main pipeline, a combustion-supporting air conveying branch pipeline, a second double-gate-plate gate valve, a second stop valve and a second regulating valve, one end of the combustion-supporting air conveying main pipeline is communicated with combustion-supporting air, the other end of the combustion-supporting air conveying main pipeline is communicated with the combustion-supporting air branch pipeline, the other end of the combustion-supporting air conveying branch pipeline is communicated with the heat accumulating type heating furnace, and the second double-gate-plate gate valve, the second stop valve and the second regulating valve are arranged on the combustion-supporting air conveying branch pipeline.
Preferably, the combustion air conveying mechanism further comprises a second nitrogen protection assembly, a second diffusing assembly and an oxygen conveying assembly;
the second nitrogen protection assembly comprises a second nitrogen conveying pipeline and a second nitrogen blow-off valve, the second nitrogen conveying pipeline is arranged between the second double-gate plate gate valve and the second stop valve and communicated with the combustion air conveying branch pipeline, and the second nitrogen blow-off valve is arranged on the second nitrogen conveying pipeline;
the second bleeding component comprises a second bleeding pipeline and a second bleeding valve, the second bleeding pipeline is arranged between the first double-gate valve and the first cut-off valve and communicated with the combustion air conveying pipeline, and the second bleeding valve is arranged on the second bleeding pipeline;
the oxygen conveying assembly comprises an oxygen conveying pipeline and an oxygen regulating valve, the oxygen regulating valve is arranged on the oxygen conveying pipeline, the oxygen conveying pipeline is communicated with the combustion air conveying branch pipeline, and the oxygen conveying pipeline is arranged between the heat exchange mechanism and the second regulating valve.
Preferably, the flue gas conveying mechanism comprises a flue gas conveying main pipeline, a flue gas conveying branch pipeline and a third double-gate-plate gate valve, one end of the flue gas conveying main pipeline is communicated with the outside atmosphere, the other end of the flue gas conveying main pipeline is communicated with the flue gas conveying branch pipeline, the other end of the flue gas conveying branch pipeline is communicated with the heat accumulating type heating furnace, and the third double-gate-plate gate valve is arranged on the flue gas conveying branch pipeline.
Preferably, flue gas conveying mechanism still includes waste gas buffering output assembly, waste gas buffer tank output assembly includes waste gas conveying line, waste gas valve, waste gas governing valve and buffer tank, the waste gas valve with waste gas governing valve all set up in on the waste gas conveying line, waste gas conveying line's one end with the flue gas carries the branch pipeline to be linked together, waste gas conveying line's the other end with the buffer tank is linked together.
Preferably, flue gas conveying mechanism still includes the waste gas recovery subassembly, the waste gas recovery subassembly includes waste gas conveying line, waste gas valve, waste gas governing valve and retrieves the jar, the waste gas valve with the waste gas governing valve all set up in on the waste gas conveying line, waste gas conveying line's one end with flue gas transport branch pipeline is linked together, waste gas conveying line's the other end with it is linked together to retrieve the jar.
Preferably, the high-pressure explosive low-temperature gas conveying mechanism comprises a high-pressure explosive low-temperature gas conveying pipeline, a fourth double-gate valve and a third stop valve, the fourth double-gate valve and the third stop valve are arranged on the high-pressure explosive low-temperature gas conveying pipeline, one end of the high-pressure explosive low-temperature gas conveying pipeline is communicated with the high-pressure explosive low-temperature gas, and the other end of the high-pressure explosive low-temperature gas conveying pipeline is communicated with the heat accumulating type heating furnace.
Preferably, the high-pressure explosive low-temperature gas conveying mechanism further comprises a third nitrogen protection assembly, a pressure equalizing assembly and a steam conveying assembly;
the third nitrogen protection component comprises a third nitrogen purging pipeline and a third nitrogen purging valve arranged on the nitrogen purging pipeline, the third nitrogen purging pipeline is arranged on the fourth double gate valve and the third cut-off valve, and the third nitrogen purging pipeline is communicated with the high-pressure explosive low-temperature gas conveying pipeline;
the pressure equalizing assembly comprises a pressure equalizing pipeline and a pressure equalizing valve, the pressure equalizing valve is arranged on the pressure equalizing pipeline, and two ends of the pressure equalizing pipeline are respectively arranged on two sides of the fourth double-gate-plate gate valve;
the steam conveying assembly comprises a steam conveying pipeline and a steam regulating valve, wherein the steam regulating valve is arranged on the steam conveying pipeline, and the steam conveying pipeline is communicated with the high-pressure explosive low-temperature gas pipeline.
Preferably, the high-pressure explosive high-temperature gas conveying mechanism comprises the high-pressure explosive high-temperature gas conveying pipeline and a high-pressure explosive high-temperature gas valve, the high-pressure explosive high-temperature gas valve is arranged on the high-pressure explosive high-temperature gas conveying pipeline, one end of the high-pressure explosive high-temperature gas conveying pipeline is communicated with high-pressure explosive high-temperature gas, and the other end of the high-pressure explosive high-temperature gas conveying pipeline is communicated with the heat accumulating type heating furnace.
Preferably, the heat exchange mechanism comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is connected in series to the furnace-burning coal gas conveying main pipeline and the flue gas conveying main pipeline, and the second heat exchanger is connected in series to the combustion air conveying main pipeline and the flue gas conveying main pipeline.
Preferably, the regenerative heating furnace has 2-4 seats.
A gas heating method is applied to the gas heating device, and comprises a smoldering furnace to burning furnace mode, a burning furnace to smoldering furnace mode, a smoldering furnace to air supply mode and an air supply to smoldering furnace mode, wherein the smoldering furnace to burning furnace mode, the burning furnace to smoldering furnace mode, the smoldering furnace to air supply mode and the air supply to smoldering furnace to air supply mode can be switched with each other;
the mode of the furnace-closing-to-burning mode is as follows:
s100: opening a waste gas regulating valve, and opening a waste gas valve to diffuse high-pressure explosive high-temperature coal gas in the regenerative heating furnace until the pressure in the regenerative heating furnace reaches a preset pressure value;
s200: closing the first nitrogen purging valve, opening the first bleeding valve, and unloading the pressure in the regenerative heating furnace;
s300: opening a first double-gate valve on a burning furnace gas conveying branch pipeline, keeping a first cut-off valve closed, opening a first nitrogen purging valve, purging and replacing high-pressure explosive high-temperature gas in the heat accumulating type heating furnace until the content of carbon monoxide in the flue gas conveying branch pipeline reaches the standard, and finishing the diffusion;
s400: opening a first double-gate-plate gate valve of a burning furnace gas conveying branch pipeline, opening a first cut-off valve, opening a first regulating valve, closing a first nitrogen purge valve, closing a first bleeding valve, simultaneously opening a second double-gate-plate gate valve on a combustion air branch pipeline, opening a second cut-off valve, opening a second regulating valve, closing a second nitrogen purge valve, and closing a second bleeding valve, so that burning furnace gas enters a regenerative heating furnace through a first heat exchanger, combustion air enters the regenerative heating furnace through a second heat exchanger, and the regenerative heating furnace enters a combustion state;
the mode of the furnace burning to the furnace closing is as follows:
closing the first regulating valve, closing the first cut-off valve, closing the second regulating valve, closing the second cut-off valve, keeping the first double-gate-plate gate valve open, keeping the second double-gate-plate gate valve open, opening the first nitrogen purging valve, opening the second nitrogen purging valve, purging the furnace gas conveying branch pipeline and the combustion air branch pipeline, simultaneously opening the fourth nitrogen purging valve and the fifth nitrogen purging valve, after a first preset time, closing the first double-gate-plate and the second double-gate-plate gate valve, after a second preset time, closing the first nitrogen purging valve of the furnace gas conveying branch pipeline, and opening the first blow-off valve; closing a second nitrogen purge valve of the combustion air branch pipeline, opening a second diffusion valve, and simultaneously closing a double-gate-plate gate valve on the flue gas conveying branch pipeline, wherein the regenerative heating furnace is converted from a burning furnace to a smoldering furnace;
the furnace-stuffy air supply mode comprises the following steps:
opening a third cut-off valve, opening a third nitrogen purging valve, performing nitrogen purging on the high-pressure explosive low-temperature gas conveying pipeline, and closing the third nitrogen purging valve after the purging is finished;
and opening a pressure equalizing valve, closing the pressure equalizing valve when the pressure in the regenerative heating furnace reaches a preset pressure value, opening a fourth double-gate-plate gate valve, and feeding a high-pressure explosive high-temperature coal gas conveying pipeline into the regenerative heating furnace.
The working mode of the air supply turning furnace is as follows:
and closing the high-pressure explosive high-temperature gas valve, the fourth double-gate valve and the third stop valve, and opening the third nitrogen purging valve, wherein the regenerative heating furnace is switched from an air supply mode to a furnace-closing mode.
The working mode of the air supply turning furnace is as follows:
and closing the high-pressure explosive high-temperature gas valve, the fourth double-gate valve and the third stop valve, and opening the third nitrogen purging valve, wherein the regenerative heating furnace is switched from an air supply mode to a furnace-closing mode.
According to the technical scheme, compared with the prior art, the gas heating device disclosed by the embodiment of the invention is provided with the heat exchange mechanism, the heat exchange mechanism can exchange heat between the burning furnace gas entering the regenerative heating furnace and the smoke flowing out of the regenerative heating furnace, and meanwhile, the heat exchange mechanism can exchange heat between the combustion air entering the regenerative heating furnace and the smoke flowing out of the regenerative heating furnace.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a gas heating device disclosed in a first embodiment of the present invention;
fig. 2 is a schematic structural view of a gas heating device according to a second embodiment of the present invention.
Wherein, each part name is as follows:
100-regenerative heating furnace; 200-furnace gas conveying main pipeline; 201-furnace gas conveying branch pipelines; 2011-first double gate valve; 2012-a first shut-off valve; 2013-a first regulating valve; 202-first nitrogen gas delivery line; 2021-first nitrogen purge valve; 203-a first bleed line; 2031-a first blow-off valve; 300-combustion air delivery main pipeline; 301-combustion air delivery branch line; 3011-a second dual gate plate gate valve; 3012-a second shut-off valve; 3013-a second regulating valve; 302-a second nitrogen delivery line; 3021-a second nitrogen purge valve; 303-oxygen delivery line; 3031-oxygen regulating valve; 304-a second bleed line; 3041-a second bleed valve; 400-flue gas conveying main pipeline; 401-flue gas delivery branch line; 4011-third double gate disc gate valve; 500-high pressure explosive low temperature gas conveying pipeline; 501-a fourth double gate plate gate valve; 502-a third shut-off valve; 503-a third nitrogen purge line; 5031-a third nitrogen purge valve; 504-pressure equalizing pipeline; 5041-pressure equalizing valve; 505-a steam delivery line; 5051-steam regulating valve; 600-high pressure explosive high temperature gas conveying pipeline; 601-high pressure explosive high temperature gas valve; 700-an exhaust gas delivery line; 701-a waste gas valve; 702-an exhaust gas regulating valve; 703-a buffer tank, 704-a recovery tank; 800-a fourth nitrogen purge line; 801-fourth nitrogen purge valve; 802-fifth nitrogen purge valve; 803-sixth nitrogen purge valve; 900-a first heat exchanger; 1000-second heat exchanger.
Detailed Description
In view of this, the core of the present invention is to provide a gas heating device, which can effectively improve the combustion efficiency of a heating furnace.
The invention also provides a gas heating method.
In order to make the technical field of the invention better understand, the invention is further described in detail with reference to the accompanying drawings and the detailed description, and please refer to fig. 1 to 2.
The gas heating device disclosed by the embodiment of the invention comprises a heat accumulating type heating furnace 100, a heat exchange mechanism, a burning furnace gas conveying mechanism, a combustion-supporting air conveying mechanism and a flue gas conveying mechanism, wherein the burning furnace gas conveying mechanism, the combustion-supporting air conveying mechanism and the flue gas conveying mechanism are all communicated with the heat accumulating type heating furnace 100, and are all connected in parallel.
The furnace gas conveying mechanism is used for conveying furnace gas into the heat accumulating type heating furnace 100, the combustion-supporting air conveying mechanism is used for conveying combustion-supporting air into the heat accumulating type heating furnace 100, and the flue gas conveying mechanism is used for outputting flue gas flowing out of the heat accumulating type heating furnace 100.
It should be noted that the heat exchange mechanism is connected in series to the furnace burning gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange mechanism can increase the temperature of the furnace burning gas and the combustion air.
Compared with the prior art, the gas heating device disclosed by the embodiment of the invention is provided with the heat exchange mechanism, the heat exchange mechanism can exchange heat between the burning furnace gas entering the heat accumulating type heating furnace 100 and the smoke flowing out of the heat accumulating type heating furnace 100, and simultaneously, the heat exchange mechanism can exchange heat between the combustion air entering the heat accumulating type heating furnace 100 and the smoke flowing out of the heat accumulating type heating furnace 100, so that the burning furnace gas and the combustion air entering the heat accumulating type heating furnace 100 can firstly rise the temperature through the heat exchange mechanism and then enter the heat accumulating type heating furnace 100, the heating efficiency of the heat accumulating type heating furnace 100 can be greatly improved, and meanwhile, the temperature of the smoke exhausted to the outside atmosphere can be reduced, thereby further reducing the environmental pollution.
As a preferred embodiment, the gas heating apparatus disclosed in the embodiment of the present invention further includes a high-pressure explosive low-temperature gas conveying mechanism and a high-pressure explosive high-temperature gas conveying mechanism, both of which are communicated with the regenerative heating furnace 100.
The high-pressure explosive low-temperature gas conveying mechanism is used for conveying the high-pressure explosive low-temperature gas into the heat accumulating type heating furnace 100, and the high-pressure explosive high-temperature gas conveying mechanism is used for outputting the high-pressure explosive high-temperature gas in the heat accumulating type heating furnace 100.
The embodiment of the invention does not limit the specific structure of the furnace gas conveying mechanism, and the structure meeting the use requirement of the invention is within the protection scope of the invention.
As a preferred embodiment, the stoking gas conveying mechanism disclosed in the embodiment of the present invention includes a stoking gas conveying main pipeline 200, a stoking gas conveying branch pipeline 201, a first double gate plate gate valve 2011, a first cut-off valve 2012 and a first regulating valve 2013, wherein one end of the stoking gas conveying main pipeline 200 is communicated with stoking gas, the other end of the stoking gas conveying main pipeline 200 is communicated with one end of the stoking gas conveying branch pipeline 201, the other end of the stoking gas conveying branch pipeline 201 is communicated with the regenerative heating furnace 100, and the first double gate plate gate valve 2011, the first cut-off valve 2012 and the first regulating valve 2013 are all disposed on the stoking gas conveying branch pipeline 201.
The first regulating valve 2013 is used for regulating the gas flow of the furnace burning gas branch pipeline, and when the first double gate plate gate valve 2011, the first cut-off valve 2012 and the first regulating valve 2013 are all opened, furnace burning gas can enter from the furnace burning gas conveying main pipeline 200 and enter the regenerative heating furnace 100 through the furnace burning gas conveying branch pipeline 201.
In order to protect the furnace-burning gas conveying branch pipe 201 and the regenerative heating furnace 100, the furnace-burning gas conveying mechanism disclosed by the embodiment of the invention further comprises a first nitrogen protection component and a first diffusion component.
The first nitrogen protection assembly comprises a first nitrogen conveying pipeline 202 and a first nitrogen purging valve 2021, the first nitrogen conveying pipeline 202 is arranged between the first double gate plate gate valve 2011 and the first cut-off valve 2012 and is communicated with the furnace gas conveying pipeline, and the first nitrogen purging valve 2021 is arranged on the first nitrogen conveying pipeline 202;
the first bleeding component comprises a first bleeding pipeline 203 and a first bleeding valve 2031, the first bleeding pipeline 203 is arranged between the first double gate valve 2011 and the first cut-off valve 2012 and is communicated with the furnace gas conveying pipeline, and the first bleeding valve 2031 is arranged on the first bleeding pipeline 203.
When the first double gate plate gate valve 2011, the first cut-off valve 2012 and the first adjusting valve 2013 are all closed, the first bleeding valve 2031 is opened to bleed the leaked gas in the furnace-burning gas conveying branch pipe 201.
The embodiment of the invention does not limit the specific structure of the combustion air conveying mechanism, and the structure which meets the use requirement of the invention is within the protection scope of the invention.
As a preferred embodiment, the combustion air conveying mechanism disclosed in the embodiment of the present invention includes a combustion air conveying main pipe 300, a combustion air conveying branch pipe 301, a second double-gate valve 3011, a second shutoff valve 3012, and a second regulating valve 3013, wherein one end of the combustion air conveying main pipe 300 is communicated with combustion air, the other end of the combustion air conveying main pipe 300 is communicated with the combustion air conveying branch pipe 301, the other end of the combustion air conveying branch pipe 301 is communicated with the regenerative heating furnace 100, and the second double-gate valve 3011, the second shutoff valve 3012, and the second regulating valve 3013 are all disposed on the combustion air conveying branch pipe 301.
The second adjusting valve 3013 is configured to adjust a gas flow of combustion air, and when the second dual gate valve 3011, the second shut-off valve 3012, and the second adjusting valve 3013 are all opened, combustion air may enter the combustion air delivery branch line 301 from the combustion air delivery main line 300, and then enter the regenerative heating furnace 100 from the combustion air delivery branch line 301.
In order to protect the combustion air delivery branch pipe 301 and the regenerative heating furnace 100, the combustion air delivery mechanism disclosed by the embodiment of the invention further comprises a second nitrogen protection assembly, a second diffusion assembly and an oxygen delivery assembly.
The second bleeding component includes a second bleeding pipeline 304 and a second bleeding valve 3041, the second bleeding pipeline 304 is disposed between the second double gate plate valve 3011 and the second shut-off valve 3012 and is communicated with the combustion air conveying pipeline 301, and the second bleeding valve 3041 is disposed on the second bleeding pipeline 304.
The second nitrogen protection assembly comprises a second nitrogen conveying pipeline 302 and a second nitrogen purge valve 3021, the second nitrogen conveying pipeline 302 is arranged between the second double gate plate gate valve 3011 and the second cut-off valve 3012 and is communicated with the combustion air conveying branch pipeline 301, and the second nitrogen purge valve 3021 is arranged on the second nitrogen conveying pipeline 302.
The oxygen conveying assembly comprises an oxygen conveying pipeline 303 and an oxygen regulating valve 3031, the oxygen regulating valve 3031 is arranged on the oxygen conveying pipeline 303, the oxygen conveying pipeline 303 is communicated with the combustion air conveying branch pipeline 301, and the oxygen conveying pipeline 303 is arranged between the heat exchange mechanism and the second regulating valve 3013.
When the second double-gate valve 3011, the second shutoff valve 3012 and the second regulating valve 3013 are all closed, the second bleeding valve 3041 is opened to bleed the leaked gas in the combustion air branch conduit 301.
When the second double gate plate gate valve 3011, the second stop valve 3012 and the second regulating valve 3013 are all opened, the oxygen regulating valve 3031 is opened to introduce oxygen into the combustion air delivery branch pipe 301 to further perform the function of removing carbon deposits.
The embodiment of the present invention does not limit the specific structure of the flue gas conveying mechanism, and the structure meeting the requirements of the present invention is within the protection scope of the present invention.
As a preferred embodiment, the flue gas conveying mechanism disclosed in the embodiment of the present invention includes a flue gas conveying main pipeline 400, a flue gas conveying branch pipeline 401, and a third double-gate-plate gate valve 4011, wherein one end of the flue gas conveying main pipeline 400 is communicated with the outside atmosphere, the other end of the flue gas conveying main pipeline 400 is communicated with the flue gas conveying branch pipeline 401, the other end of the flue gas conveying branch pipeline 401 is communicated with the regenerative heating furnace 100, and the third double-gate-plate gate valve 4011 is disposed on the flue gas conveying branch pipeline 401.
When the third double-gate valve 4011 is opened, the flue gas in the regenerative heating furnace 100 can be sequentially discharged from the regenerative heating furnace 100 to the outside atmosphere from the flue gas delivery branch pipeline 401 and the flue gas delivery main pipeline 400.
The flue gas exhausted from the regenerative heating furnace 100 may be directly exhausted to the atmosphere, or may be recycled.
As a first preferred embodiment of the present invention, referring to fig. 1 in particular, the flue gas conveying mechanism disclosed in the embodiment of the present invention further includes an exhaust gas buffer output assembly, wherein the exhaust gas buffer tank 703 output assembly includes an exhaust gas conveying pipeline 700, an exhaust gas valve 701, an exhaust gas regulating valve 702 and a buffer tank 703, the exhaust gas valve 701 and the exhaust gas regulating valve 702 are both disposed on the exhaust gas conveying pipeline 700, one end of the exhaust gas conveying pipeline 700 is communicated with the flue gas conveying branch pipeline 401, and the other end of the exhaust gas conveying pipeline 700 is communicated with the buffer tank 703.
It should be noted that the waste gas regulating valve 702 can regulate the flow rate of the waste gas conveying pipeline 700, and when the waste gas valve 701 and the waste gas regulating valve 702 are opened, the flue gas can enter the buffer tank 703 from the flue gas conveying branch pipeline 401, the waste gas valve 701 and the waste gas regulating valve 702 in sequence, and is buffered in the buffer tank 703 and then discharged to the outside atmosphere.
As a second preferred embodiment of the present invention, referring to fig. 2 in particular, the flue gas conveying mechanism disclosed in the embodiment of the present invention further includes a waste gas recovery assembly, the waste gas recovery assembly includes a waste gas conveying pipeline 700, a waste gas valve 701, a waste gas regulating valve 702 and a recovery tank 704, the waste gas valve 701 and the waste gas regulating valve 702 are both disposed on the waste gas conveying pipeline 700, one end of the waste gas conveying pipeline 700 is communicated with the flue gas conveying branch pipeline 401, and the other end of the waste gas conveying pipeline 700 is communicated with the recovery tank 704.
It should be noted that the waste gas regulating valve 702 can regulate the flow rate of the waste gas conveying pipeline 700, and when the waste gas valve 701 and the waste gas regulating valve 702 are opened, the flue gas can enter the recovery tank 704 from the flue gas conveying branch pipeline 401, the waste gas valve 701 and the waste gas regulating valve 702 in sequence to be recovered and utilized.
The embodiment of the invention does not limit the specific mechanism of the high-pressure explosive low-temperature gas conveying mechanism, and the structure meeting the use requirement of the invention is within the protection scope of the invention.
As a preferred embodiment, the high-pressure explosive low-temperature gas conveying mechanism disclosed in the embodiment of the present invention includes a high-pressure explosive low-temperature gas conveying pipeline 500, a fourth double-gate valve 501, and a third cut-off valve 502, where the fourth double-gate valve 501 and the third cut-off valve 502 are both disposed on the high-pressure explosive low-temperature gas conveying pipeline 500, one end of the high-pressure explosive low-temperature gas conveying pipeline 500 is communicated with the high-pressure explosive low-temperature gas, and the other end of the high-pressure explosive low-temperature gas conveying pipeline 500 is communicated with the regenerative heating furnace 100.
As a preferred embodiment, the high-pressure explosive low-temperature gas conveying mechanism disclosed by the embodiment of the invention further comprises a third nitrogen protection assembly, a pressure equalizing assembly and a steam conveying assembly.
The third nitrogen protection component comprises a third nitrogen purging pipeline 503 and a third nitrogen purging valve 5031 arranged on the nitrogen purging pipeline, the third nitrogen purging pipeline 503 is arranged on the fourth double gate valve 501 and the third cut-off valve 502, and the third nitrogen purging pipeline 503 is communicated with the high-pressure explosive low-temperature gas conveying pipeline 500.
Wherein, the voltage-sharing subassembly includes voltage-sharing pipeline 504 and voltage-sharing valve 5041, and on voltage-sharing pipeline 504 was located to voltage-sharing valve 5041, the both ends of voltage-sharing pipeline 504 set up respectively in the both sides of fourth double gate disc gate valve 501.
The steam conveying assembly comprises a steam conveying pipeline 505 and a steam regulating valve 5051, the steam regulating valve 5051 is arranged on the steam conveying pipeline 505, and the steam conveying pipeline 505 is communicated with the high-pressure explosive low-temperature gas pipeline.
It should be noted that the pressure equalizing valve 5041 is capable of equalizing the pressure in the high-pressure explosive low-temperature gas conveying pipeline 500, and when the fourth double-gate valve 501 and the third cut-off valve 502 are opened, the high-pressure explosive low-temperature gas can enter the regenerative heating furnace 100 for combustion.
When the fourth double gate plate gate valve 501 is closed, the third cut-off valve 502 is opened, and the third nitrogen purge valve 5031 is opened, the high-pressure explosive low-temperature gas conveying pipeline 500 between the fourth double gate plate gate valve 501 and the regenerative heating furnace 100 can be purged.
When high-pressure explosive low-temperature gas enters the regenerative heating furnace 100, the steam regulating valve 5051 can be opened, so that the steam enters the high-pressure explosive low-temperature gas conveying pipeline 500, and the formation of carbon deposition is inhibited.
The embodiment of the invention does not limit the specific structure of the high-pressure explosive high-temperature gas conveying mechanism, and the structure meeting the use requirement of the invention is within the protection scope of the invention.
As a preferred embodiment, the high-pressure explosive high-temperature gas conveying mechanism disclosed in the embodiment of the present invention includes a high-pressure explosive high-temperature gas conveying pipeline 600 and a high-pressure explosive high-temperature gas valve 601, the high-pressure explosive high-temperature gas valve 601 is disposed on the high-pressure explosive high-temperature gas conveying pipeline 600, one end of the high-pressure explosive high-temperature gas conveying pipeline 600 is communicated with the high-pressure explosive high-temperature gas, and the other end of the high-pressure explosive high-temperature gas conveying pipeline 600 is communicated with the regenerative heating furnace 100.
The high-pressure explosive low-temperature coal gas is heated and combusted in the regenerative heating furnace 100 to form high-pressure explosive high-temperature coal gas, the high-pressure explosive high-temperature coal gas valve 601 is opened, and the high-temperature coal gas in the regenerative heating furnace 100 can enter the high-pressure explosive high-temperature coal gas conveying pipeline 600.
It should be noted that, in the embodiment of the present invention, the high-pressure explosive high-temperature gas conveying pipeline 600 is further provided with a corrugated compensator and a tensioning device, so that pipeline cracking and gas leakage caused by expansion of the high-pressure explosive high-temperature gas conveying pipeline can be avoided.
Meanwhile, a pressure detection point is further arranged in an interlayer of the corrugated pipe of the corrugated compensator to monitor whether the compensator leaks or not.
The regenerative heating furnace 100 disclosed in the embodiment of the present invention may be provided with two or more, which is not limited in the embodiment of the present invention and can be selected by a person skilled in the art according to actual situations.
Preferably, the regenerative heating furnace 100 disclosed in the embodiment of the present invention is preferably provided with 2 to 4 seats, and when 2 to 4 seats are provided, a plurality of furnace gas conveying branch pipelines 201, combustion air conveying branch pipelines 301 and flue gas conveying branch pipelines 401 may be provided, wherein two ends of the plurality of furnace gas conveying branch pipelines 201 are respectively communicated with the furnace gas conveying main pipeline 200 and the regenerative heating furnace 100, two ends of the combustion air conveying branch pipelines 301 are respectively communicated with the flue gas conveying main pipeline 400 and the regenerative heating furnace 100, and two ends of the flue gas conveying branch pipelines 401 are respectively communicated with the external atmosphere and the regenerative heating furnace 100.
The embodiment of the present invention does not limit the specific structure of the heat exchanging mechanism, and the structure satisfying the use requirement of the present invention is within the protection scope of the present invention.
As a preferred embodiment, the heat exchange mechanism disclosed in the embodiment of the present invention includes a first heat exchanger 900 and a second heat exchanger 1000, wherein the first heat exchanger 900 is connected in series to the furnace-burning gas conveying main pipeline 200 and the flue gas conveying main pipeline 400, and the second heat exchanger 1000 is connected in series to the combustion air conveying main pipeline 300 and the flue gas conveying main pipeline 400.
So set up, can carry out the heat transfer with flue gas and burning furnace coal gas through first heat exchanger 900 for the temperature of flue gas reduces, and the temperature of burning furnace coal gas risees, also can carry out the heat transfer with flue gas and combustion air through second heat exchanger 1000 simultaneously, makes the temperature of flue gas reduce, and combustion air's temperature risees.
As a preferred embodiment, the gas heating apparatus disclosed in the embodiment of the present invention further includes a fourth nitrogen purging line 800, and a fourth nitrogen purging valve 801, a fifth nitrogen purging valve 802, and a sixth nitrogen purging valve 803 that are disposed on the fourth nitrogen purging line 800, wherein the fourth nitrogen purging valve 801, the fifth nitrogen purging valve 802, and the sixth nitrogen purging valve 803 may respectively perform nitrogen purging on the regenerative heating furnace 100, so as to further improve the safety of the regenerative heating furnace 100.
It should be noted that the gas heating device disclosed by the embodiment of the invention further comprises a plurality of explosion venting valves and explosion venting films, and when accidental explosion occurs, directional organized explosion venting can be performed;
the embodiment of the invention also discloses a gas heating method which is applied to the gas heating device disclosed by any one of the embodiments and comprises a smoldering furnace-to-smoldering furnace mode, a smoldering furnace-to-air supply mode and an air supply-to-smoldering furnace mode, wherein the smoldering furnace-to-burning furnace mode, the furnace-to-smoldering furnace mode, the smoldering furnace-to-air supply mode and the air supply-to-smoldering furnace mode can be mutually switched.
Wherein, the mode of the furnace closing and the furnace burning is as follows:
s100: opening a waste gas regulating valve 702 and a waste gas valve 701 to diffuse high-pressure explosive high-temperature coal gas in the regenerative heating furnace 100 until the pressure in the regenerative heating furnace 100 reaches a preset pressure value;
s200: closing the first nitrogen purge valve 2021, opening the first blow-off valve 2031, and unloading the pressure in the regenerative heating furnace 100;
s300: opening a first double gate plate gate valve 2011 on the burning furnace gas conveying branch pipeline 201, keeping a first cut-off valve 2012 closed, opening a first nitrogen purging valve 2021, purging and replacing high-pressure explosive high-temperature gas in the regenerative heating furnace 100 until the content of carbon monoxide in the flue gas conveying branch pipeline 401 reaches the standard, and finishing the diffusion;
s400: opening a first double gate valve 2011 on the furnace gas conveying branch pipeline 201, opening a first cut-off valve 2012, opening a first regulating valve 2013, closing a first nitrogen purge valve 2021, closing a first blow-off valve 2031, simultaneously opening a second double gate valve 3011 on the combustion air branch pipeline 301, opening a second cut-off valve 3012, opening a second regulating valve 3013, closing a second nitrogen purge valve 3021, and closing a second blow-off valve 3041, so that furnace gas enters the regenerative heating furnace 100 through the first heat exchanger 900, so that combustion air enters the regenerative heating furnace 100 through the second heat exchanger 1000, and the regenerative heating furnace 100 enters a combustion state;
the mode of converting the burning furnace into the stuffy furnace is as follows:
closing the first adjusting valve 2013, closing the first cut-off valve 2012, closing the second adjusting valve 3013, closing the second cut-off valve 3012, keeping the first double gate valve 2011 open, keeping the second double gate valve 3011 open, opening the first nitrogen purge valve 2021, opening the second nitrogen purge valve 3021, purging the furnace gas delivery branch conduit and the combustion air delivery branch conduit 301, simultaneously opening the fourth nitrogen purge valve 801 and the fifth nitrogen purge valve 802, after a first predetermined time, closing the first double gate valve and the second double gate valve 3011, after a second predetermined time, closing the first nitrogen purge valve 2021 on the furnace gas delivery branch conduit 201, opening the first purge valve 2031, closing the second nitrogen purge valve 3021, opening the second purge valve 3041, and simultaneously closing the double gate valve 4011 of the flue gas delivery branch conduit 401, thereby converting the regenerative furnace 100 from a furnace to a stoker furnace.
The furnace-sealed air supply mode comprises the following steps:
the third cut-off valve 502 is opened, the third nitrogen purging valve 5031 is opened, nitrogen purging is performed on the high-pressure explosive low-temperature gas conveying pipeline 500, and after the purging is completed, the third nitrogen purging valve 5031 is closed;
and (3) opening the pressure equalizing valve 5041, closing the pressure equalizing valve 5041 when the pressure in the regenerative heating furnace 100 reaches a preset pressure value, opening the fourth double-gate valve 501, and sending the high-pressure explosive high-temperature gas conveying pipeline 600 into the regenerative heating furnace 100.
The working mode of the air supply turning furnace is as follows:
the high-pressure explosive high-temperature gas valve 601, the fourth double gate valve 501 and the third cut-off valve 502 are closed, the third nitrogen purge valve 5031 is opened, and the regenerative heating furnace 100 is switched from the blowing mode to the furnace-closed mode.
Compared with the prior art, the gas heating device disclosed by the embodiment of the invention is provided with the first heat exchanger 900 and the second heat exchanger 1000, the first heat exchanger 900 can exchange heat between the burning furnace gas entering the heat accumulating type heating furnace 100 and the smoke flowing out of the heat accumulating type heating furnace 100, and the second heat exchanger 1000 can exchange heat between the combustion air entering the heat accumulating type heating furnace 100 and the smoke flowing out of the heat accumulating type heating furnace 100.
The first preset time and the second preset time are not limited in the embodiment of the invention, and a person skilled in the art can select the first preset time and the second preset time according to actual situations.
In the description of the present application, 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, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. 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.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; 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 application can be understood in a specific case by those of ordinary skill in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (15)
1. A coal gas heating device is characterized by comprising a heat accumulating type heating furnace, a heat exchange mechanism, a burning furnace coal gas conveying mechanism, a combustion air conveying mechanism and a flue gas conveying mechanism, wherein the burning furnace coal gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism are all communicated with the heat accumulating type heating furnace, and are all connected in parallel;
the furnace burning gas conveying mechanism is used for conveying furnace burning gas into the heat accumulating type heating furnace, the combustion-supporting air conveying mechanism is used for conveying combustion-supporting air into the heat accumulating type heating furnace, and the flue gas conveying mechanism is used for outputting flue gas flowing out of the heat accumulating type heating furnace;
the heat exchange mechanism is connected in series with the burning furnace gas conveying mechanism, the combustion air conveying mechanism and the flue gas conveying mechanism, the heat exchange mechanism can reduce the temperature of the flue gas, and the heat exchange mechanism can increase the temperature of the burning furnace gas and the temperature of the combustion air.
2. The gas heating device according to claim 1, further comprising a high-pressure explosive low-temperature gas conveying mechanism and a high-pressure explosive high-temperature gas conveying mechanism, wherein both the high-pressure explosive low-temperature gas conveying mechanism and the high-pressure explosive high-temperature gas conveying mechanism are communicated with the regenerative heating furnace;
the high-pressure explosive low-temperature coal gas conveying mechanism is used for conveying high-pressure explosive low-temperature coal gas into the heat accumulating type heating furnace, and the high-pressure explosive high-temperature coal gas conveying mechanism is used for outputting the high-pressure explosive high-temperature coal gas in the heat accumulating type heating furnace.
3. The gas heating apparatus according to claim 1, wherein the furnace-burning gas conveying mechanism includes a furnace-burning gas conveying main line, a furnace-burning gas conveying branch line, a first double-gate valve, a first cut-off valve, and a first regulating valve, one end of the furnace-burning gas conveying main line is communicated with the furnace-burning gas, the other end of the furnace-burning gas conveying main line is communicated with one end of the furnace-burning gas conveying branch line, the other end of the furnace-burning gas conveying branch line is communicated with the regenerative heating furnace, and the first double-gate valve, the first cut-off valve, and the first regulating valve are disposed on the furnace-burning gas conveying branch line.
4. The gas heating device according to claim 3, wherein said furnace-burning gas conveying mechanism further comprises a first nitrogen protection component and a first diffusion component;
the first nitrogen protection assembly comprises a first nitrogen conveying pipeline and a first nitrogen purging valve, the first nitrogen conveying pipeline is arranged between the first double-gate valve and the first cut-off valve and communicated with the furnace gas conveying pipeline, and the first nitrogen purging valve is arranged on the first nitrogen conveying pipeline;
first diffuse subassembly includes first diffuse pipeline and first diffuse valve, first diffuse pipeline set up in first double gate valve with between the first cut-off valve, and with stove coal gas conveying pipeline is linked together, first diffuse valve set up in on the first diffuse pipeline.
5. The gas heating apparatus according to claim 1, wherein the combustion air delivery mechanism comprises a combustion air delivery main line, a combustion air delivery branch line, a second double-gate valve, a second shut-off valve, and a second regulating valve, one end of the combustion air delivery main line is communicated with combustion air, the other end of the combustion air delivery main line is communicated with the combustion air branch line, the other end of the combustion air delivery branch line is communicated with the regenerative heating furnace, and the second double-gate valve, the second shut-off valve, and the second regulating valve are disposed on the combustion air delivery branch line.
6. The gas heating device according to claim 5, wherein said combustion air delivery mechanism further comprises a second nitrogen protection assembly, a second diffusion assembly and an oxygen delivery assembly;
the second nitrogen protection assembly comprises a second nitrogen conveying pipeline and a second nitrogen purge valve, the second nitrogen conveying pipeline is arranged between the second double-gate-plate gate valve and the second cut-off valve and communicated with the furnace-burning coal gas conveying branch pipeline, and the second nitrogen purge valve is arranged on the second nitrogen conveying pipeline;
the second bleeding component comprises a second bleeding pipeline and a second bleeding valve, the second bleeding pipeline is arranged between the second double-gate valve and the second stop valve and communicated with the furnace burning coal gas conveying pipeline, and the second bleeding valve is arranged on the second bleeding pipeline;
the oxygen conveying assembly comprises an oxygen conveying pipeline and an oxygen regulating valve, the oxygen regulating valve is arranged on the oxygen conveying pipeline, the oxygen conveying pipeline is communicated with the combustion air conveying branch pipeline, and the oxygen conveying pipeline is arranged between the heat exchange mechanism and the second regulating valve.
7. The gas heating device according to claim 1, wherein the flue gas delivery mechanism comprises a flue gas delivery main pipeline, a flue gas delivery branch pipeline and a third double-gate-plate gate valve, one end of the flue gas delivery main pipeline is communicated with the outside atmosphere, the other end of the flue gas delivery main pipeline is communicated with the flue gas delivery branch pipeline, the other end of the flue gas delivery branch pipeline is communicated with the regenerative heating furnace, and the third double-gate-plate gate valve is arranged on the flue gas delivery branch pipeline.
8. The gas heating device according to claim 7, wherein the flue gas delivery mechanism further comprises a waste gas buffer output assembly, the waste gas buffer output assembly comprises a waste gas delivery pipeline, a waste gas valve, a waste gas regulating valve and a buffer tank, the waste gas valve and the waste gas regulating valve are both disposed on the waste gas delivery pipeline, one end of the waste gas delivery pipeline is communicated with the flue gas delivery branch pipeline, and the other end of the waste gas delivery pipeline is communicated with the buffer tank.
9. The gas heating device according to claim 7, wherein the flue gas delivery mechanism further comprises a waste gas recovery assembly, the waste gas recovery assembly comprises a waste gas delivery pipeline, a waste gas valve, a waste gas regulating valve and a recovery tank, the waste gas valve and the waste gas regulating valve are both disposed on the waste gas delivery pipeline, one end of the waste gas delivery pipeline is communicated with the flue gas delivery branch pipeline, and the other end of the waste gas delivery pipeline is communicated with the recovery tank.
10. The gas heating device according to claim 2, wherein the high-pressure explosive low-temperature gas conveying mechanism comprises a high-pressure explosive low-temperature gas conveying pipeline, a fourth double-gate valve and a third cut-off valve, the fourth double-gate valve and the third cut-off valve are arranged on the high-pressure explosive low-temperature gas conveying pipeline, one end of the high-pressure explosive low-temperature gas conveying pipeline is communicated with the high-pressure explosive low-temperature gas, and the other end of the high-pressure explosive low-temperature gas conveying pipeline is communicated with the regenerative heating furnace.
11. The gas heating device according to claim 10, wherein said high pressure explosive low temperature gas delivery mechanism further comprises a third nitrogen protection assembly, a pressure equalizing assembly and a steam delivery assembly;
the third nitrogen protection component comprises a third nitrogen purging pipeline and a third nitrogen purging valve arranged on the nitrogen purging pipeline, the third nitrogen purging pipeline is arranged on the fourth double-gate valve and the third cut-off valve, and the third nitrogen purging pipeline is communicated with the high-pressure explosive low-temperature gas conveying pipeline;
the pressure equalizing assembly comprises a pressure equalizing pipeline and a pressure equalizing valve, the pressure equalizing valve is arranged on the pressure equalizing pipeline, and two ends of the pressure equalizing pipeline are respectively arranged on two sides of the fourth double-gate-plate gate valve;
the steam conveying assembly comprises a steam conveying pipeline and a steam regulating valve, wherein the steam regulating valve is arranged on the steam conveying pipeline, and the steam conveying pipeline is communicated with the high-pressure explosive low-temperature gas pipeline.
12. The gas heating device according to claim 2, wherein the high-pressure explosive high-temperature gas delivery mechanism includes the high-pressure explosive high-temperature gas delivery pipe and a high-pressure explosive high-temperature gas valve, the high-pressure explosive high-temperature gas valve is disposed on the high-pressure explosive high-temperature gas delivery pipe, one end of the high-pressure explosive high-temperature gas delivery pipe is communicated with the high-pressure explosive high-temperature gas, and the other end of the high-pressure explosive high-temperature gas delivery pipe is communicated with the regenerative heating furnace.
13. The gas heating device according to claim 1, wherein the heat exchange mechanism comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is connected in series to the furnace gas conveying main pipeline and the flue gas conveying main pipeline, and the second heat exchanger is connected in series to the combustion air conveying main pipeline and the flue gas conveying main pipeline.
14. The gas heating apparatus as claimed in claim 1, wherein said regenerative heating furnace has 2-4 seats.
15. A gas heating method applied to the gas heating device according to any one of claims 1 to 14, comprising a smoldering furnace to burning furnace mode, a burning furnace to smoldering furnace to burning furnace mode, a smoldering furnace to blowing mode and a blowing-to-smoldering furnace mode, wherein the smoldering furnace to burning furnace mode, the burning furnace to smoldering furnace to blowing mode, the smoldering furnace to blowing mode and the blowing-to-smoldering furnace to blowing mode can be switched with each other;
the mode of the furnace-closing-to-burning mode is as follows:
s100: opening a waste gas regulating valve, and opening a waste gas valve to diffuse high-pressure explosive high-temperature coal gas in the regenerative heating furnace until the pressure in the regenerative heating furnace reaches a preset pressure value;
s200: closing the first nitrogen purging valve, opening the first bleeding valve, and unloading the pressure in the regenerative heating furnace;
s300: opening a first double-gate valve on a burning furnace gas conveying branch pipeline, keeping a first cut-off valve closed, opening a first nitrogen purging valve, purging and replacing high-pressure explosive high-temperature gas in the heat accumulating type heating furnace until the content of carbon monoxide in the flue gas conveying branch pipeline reaches the standard, and finishing the diffusion;
s400: opening a first double-gate-plate gate valve of a burning furnace gas conveying branch pipeline, opening a first cut-off valve, opening a first regulating valve, closing a first nitrogen purge valve, closing a first bleeding valve, simultaneously opening a second double-gate-plate gate valve on a combustion air branch pipeline, opening a second cut-off valve, opening a second regulating valve, closing a second nitrogen purge valve, and closing a second bleeding valve, so that burning furnace gas enters a regenerative heating furnace through a first heat exchanger, combustion air enters the regenerative heating furnace through a second heat exchanger, and the regenerative heating furnace enters a combustion state;
the mode of the furnace burning to the furnace closing is as follows:
closing the first regulating valve, closing the first cut-off valve, closing the second regulating valve, closing the second cut-off valve, keeping the first double-gate-plate gate valve open, keeping the second double-gate-plate gate valve open, opening the first nitrogen purging valve, opening the second nitrogen purging valve, purging the furnace gas conveying branch pipeline and the combustion air branch pipeline, simultaneously opening the fourth nitrogen purging valve and the fifth nitrogen purging valve, after a first preset time, closing the first double-gate-plate and the second double-gate-plate gate valve, after a second preset time, closing the first nitrogen purging valve of the furnace gas conveying branch pipeline, and opening the first blow-off valve; closing a second nitrogen purge valve of the combustion air branch pipeline, opening a second diffusion valve, and simultaneously closing a double-gate-plate gate valve on the flue gas conveying branch pipeline, wherein the regenerative heating furnace is converted from a burning furnace to a smoldering furnace;
the furnace-stuffy air supply mode comprises the following steps:
opening a third cut-off valve, opening a third nitrogen purging valve, performing nitrogen purging on the high-pressure explosive low-temperature gas conveying pipeline, and closing the third nitrogen purging valve after the purging is finished;
opening a pressure equalizing valve, closing the pressure equalizing valve when the pressure in the regenerative heating furnace reaches a preset pressure value, opening a fourth double-gate-plate gate valve, and feeding a high-pressure explosive high-temperature coal gas conveying pipeline into the regenerative heating furnace;
the working mode of the air supply turning furnace is as follows:
and closing the high-pressure explosive high-temperature gas valve, the fourth double-gate valve and the third stop valve, and opening the third nitrogen purging valve, wherein the regenerative heating furnace is switched from an air supply mode to a furnace-closing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502195.0A CN115751318A (en) | 2022-11-28 | 2022-11-28 | Gas heating device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502195.0A CN115751318A (en) | 2022-11-28 | 2022-11-28 | Gas heating device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115751318A true CN115751318A (en) | 2023-03-07 |
Family
ID=85339378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211502195.0A Pending CN115751318A (en) | 2022-11-28 | 2022-11-28 | Gas heating device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115751318A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088245A (en) * | 1996-09-06 | 1998-04-07 | Kawasaki Steel Corp | Continuous heat treatment apparatus of metallic strip |
| CN102784605A (en) * | 2012-08-09 | 2012-11-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preventing coal gas from being coked during preheating |
| CN102952913A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Dual-preheating method and device for preheating blast furnace gas by using heat-storage-type preheating furnace |
| CN106967861A (en) * | 2017-05-26 | 2017-07-21 | 中冶京诚工程技术有限公司 | Time-sharing preheating system for combustion air of hot blast stove |
| CN112342332A (en) * | 2020-10-22 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Ignition heat preservation and inverse air supply integrated system for hot blast stove and operation method |
| CN213113384U (en) * | 2020-07-03 | 2021-05-04 | 中钢设备有限公司 | Blast furnace damping down coal gas recovery system |
| CN114317853A (en) * | 2022-01-17 | 2022-04-12 | 新疆八一钢铁股份有限公司 | Based on 2500m3Heating method for high-temperature gas by carbon circulation injection of blast furnace gas |
-
2022
- 2022-11-28 CN CN202211502195.0A patent/CN115751318A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088245A (en) * | 1996-09-06 | 1998-04-07 | Kawasaki Steel Corp | Continuous heat treatment apparatus of metallic strip |
| CN102784605A (en) * | 2012-08-09 | 2012-11-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preventing coal gas from being coked during preheating |
| CN102952913A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Dual-preheating method and device for preheating blast furnace gas by using heat-storage-type preheating furnace |
| CN106967861A (en) * | 2017-05-26 | 2017-07-21 | 中冶京诚工程技术有限公司 | Time-sharing preheating system for combustion air of hot blast stove |
| CN213113384U (en) * | 2020-07-03 | 2021-05-04 | 中钢设备有限公司 | Blast furnace damping down coal gas recovery system |
| CN112342332A (en) * | 2020-10-22 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Ignition heat preservation and inverse air supply integrated system for hot blast stove and operation method |
| CN114317853A (en) * | 2022-01-17 | 2022-04-12 | 新疆八一钢铁股份有限公司 | Based on 2500m3Heating method for high-temperature gas by carbon circulation injection of blast furnace gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102563857B (en) | Process and device for heating gas by using a heat accumulation type heating furnace | |
| CN112342332B (en) | Ignition heat preservation and inverse air supply integrated system for hot blast stove and operation method | |
| CN114317853A (en) | Based on 2500m3Heating method for high-temperature gas by carbon circulation injection of blast furnace gas | |
| CN102952913A (en) | Dual-preheating method and device for preheating blast furnace gas by using heat-storage-type preheating furnace | |
| KR101671139B1 (en) | Facility for injecting oxygen from blast furnace tuyere and blast furnace operating method | |
| CN115751318A (en) | Gas heating device and method | |
| CN202066197U (en) | Heat accumulating type heating furnace capable of heating methane gas | |
| CN212806058U (en) | Preheating device of high-temperature oil-containing dust-containing combustible gas dust remover | |
| CN210831431U (en) | Mixed hydrogen natural gas pipeline valve chamber safety unloading system | |
| CN103131812A (en) | Plate-type air and coal gas double-preheating system for hot blast stove | |
| CN101381808A (en) | Waste hydrogen burning apparatus for whole hydrogen gas bell-type annealing furnace | |
| CN115094179B (en) | System and method for recycling waste gas generated during furnace changing of hot blast stove | |
| CN107120680B (en) | Ignition device and ignition method under high-pressure inert atmosphere | |
| CN207815320U (en) | A kind of industrial gas furnace combustion system | |
| CN111118245B (en) | High-temperature preheating system and method for hot blast stove | |
| CN114777334B (en) | Combined gas heating system and heating method | |
| CN215864638U (en) | Sintering system | |
| CN202056884U (en) | Air preheating type burner | |
| CN219571907U (en) | Heating furnace capable of controlling burners in groups and reducing CO emission | |
| CN221217826U (en) | Blast furnace heating system | |
| CN219530878U (en) | Regenerator furnace temperature self preservation protects device of RTO stove | |
| CN221197428U (en) | Three-chamber RTO fuel supplementing system | |
| CN212339285U (en) | Heat storage combustion furnace | |
| CN220338250U (en) | Quick and reliable gas cutting-off device | |
| CN116920727B (en) | Carbon removing device of hydrogen-rich gas catalytic system and hydrogen-rich gas catalytic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |