CN112047300A - Alcohol cracking gas combustion heating method and device for kiln - Google Patents
Alcohol cracking gas combustion heating method and device for kiln Download PDFInfo
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- CN112047300A CN112047300A CN202010832387.2A CN202010832387A CN112047300A CN 112047300 A CN112047300 A CN 112047300A CN 202010832387 A CN202010832387 A CN 202010832387A CN 112047300 A CN112047300 A CN 112047300A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1223—Methanol
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a combustion heating method of alcohol pyrolysis gas for a kiln, which specifically comprises the following steps: s1: providing an alcohol cracking device, and communicating an outlet of the alcohol cracking device with a fuel gas inlet of a fuel gas inlet kiln; s2: and filling methanol into an inlet of the alcohol cracking equipment, heating and vaporizing the methanol in the alcohol cracking equipment, then enabling the methanol to enter a reactor in the alcohol cracking equipment, carrying out cracking reaction under the action of a catalyst in the reactor to generate combustible cracking gas, and filling the combustible cracking gas into the fuel gas inlet. The alcohol pyrolysis gas combustion heating method for the kiln can provide combustible pyrolysis gas which is easier to obtain and lower in cost for the kiln, and the combustible pyrolysis gas can be used as fuel for replacing liquefied gas, coal gas or natural gas and the like and can be used as alternative energy. The invention also discloses an alcohol pyrolysis gas combustion heating device for the kiln.
Description
Technical Field
The invention relates to the technical field of alcohol pyrolysis gas application, in particular to a combustion heating method and device for alcohol pyrolysis gas in a kiln.
Background
The kiln is a device built by refractory materials and used for firing products or magnetic materials, and is mainly divided into a coal-fired kiln, an electric kiln and a gas kiln.
Coal is used as fuel in most of the traditional industrial kilns, but because of high energy consumption and great pollution, coal gas, heavy oil and light diesel oil are abandoned or improved to be used as fuel. An electric kiln: the method uses electricity as an energy source, mostly uses an electric furnace wire, a silicon carbon side or molybdenum disilicide as a heating component, carries out oxidizing atmosphere firing by relying on electric energy radiation and a heat conduction principle, has the advantages of electronic program regulation and control, simple operation and good safety performance, is suitable for various workplaces, but has high cost for mass ceramic production. Gas kiln: the furnace is a kiln which is most widely used at present, takes liquefied gas and coal gas, particularly natural gas as fuel, has strong firepower and little pollution, is suitable for firing control of different firing atmospheres.
However, since the liquefied gas is a combustible liquid obtained by pressurizing, cooling and liquefying natural gas or petroleum, the gas is a gas containing combustible components and prepared by processing coal as a raw material, and the natural gas is hydrocarbons and non-hydrocarbon gases naturally accumulated in the formation, that is, the sources of the liquefied gas, the gas and the natural gas are all non-renewable resources such as petroleum or coal, the costs of the liquefied gas, the gas and the natural gas are high, the problem of high cost exists when the liquefied gas, the gas and the natural gas are used as fuels for a kiln which needs to consume a large amount of fuels, and in order to reduce the cost, it is urgently needed to provide a fuel with low cost for the kiln.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for heating alcohol cracking gas in a kiln by burning, wherein combustible cracking gas generated by an alcohol cracking device is used as fuel of the kiln, so that the cost is reduced.
The purpose of the invention is realized by adopting the following technical scheme:
the combustion heating method of the alcohol pyrolysis gas for the kiln comprises the following steps:
s1: providing an alcohol cracking device, and communicating an outlet of the alcohol cracking device with a fuel gas inlet of the kiln;
s2: and filling methanol into an inlet of the alcohol cracking equipment, heating and vaporizing the methanol in the alcohol cracking equipment, then feeding the methanol into a reactor in the alcohol cracking equipment, carrying out cracking reaction under the action of a catalyst in the reactor to generate combustible cracking gas at least comprising hydrogen, carbon dioxide and carbon monoxide, and filling the combustible cracking gas into the gas inlet.
Further, still include:
s3: retrieve kiln tail gas, utilize kiln tail gas heats the vaporizer among the alcohol cracking equipment, then to letting in methanol in the vaporizer heats the vaporization, simultaneously, it is right kiln tail gas cools down, and tail gas after the cooling is discharged to the external world.
Further, in step S2, the methanol sequentially passes through a heat exchanger, a vaporizer, a superheater and a reactor in the alcohol cracking apparatus, wherein the vaporizer is used to heat and vaporize the methanol, the superheater is used to heat the vaporized methanol to a temperature required by a cracking reaction, the reactor is used to promote the vaporized methanol heated by the superheater to undergo a cracking reaction to generate a combustible cracked gas, the combustible cracked gas is filled into the heat exchanger to exchange heat with the methanol in the heat exchanger, which is referred to as a first cooled combustible cracked gas, and then the first cooled combustible cracked gas is filled into the gas inlet.
And further, the combustible pyrolysis gas after the first temperature reduction is further cooled by a cooler and then is poured into the gas inlet, so that the combustible pyrolysis gas after the second temperature reduction is called as the combustible pyrolysis gas after the second temperature reduction.
And further, injecting the combustible pyrolysis gas subjected to second temperature reduction into the gas inlet after gas-liquid separation.
Further, the heat sources of the superheater and the reactor are both provided by an electric heating heat conduction oil furnace, or the heat sources of the superheater and the reactor are both provided by an electric heating body, or the heat sources of the superheater and the reactor are both provided by a steam boiler.
Furthermore, the combustible pyrolysis gas is mixed with external air and then enters the gas inlet.
The alcohol cracking gas combustion heating device for the kiln comprises the kiln and an alcohol cracking device used for cracking methanol into combustible cracking gas, wherein the kiln is provided with a gas inlet, and an outlet of the alcohol cracking device is communicated with the gas inlet through a gas pipeline.
Further, the alcohol cracking equipment at least comprises a vaporizer, a superheater and a reactor which are sequentially communicated, wherein the vaporizer is used for heating and vaporizing methanol, the superheater is used for heating the vaporized methanol to a temperature required by cracking reaction, the reactor is used for promoting the vaporized methanol heated by the superheater to generate cracking reaction so as to generate combustible cracking gas, an outlet of the reactor is communicated with the gas inlet, a tail gas outlet of the kiln is communicated with the vaporizer, and an outlet of the vaporizer is communicated with the outside.
Further, the alcohol cracking equipment also comprises a heat exchanger, wherein the heat exchanger is used for exchanging heat between high-temperature combustible cracking gas generated by the reactor and methanol introduced into the heat exchanger, a first inlet of the heat exchanger is used for being communicated with a methanol storage, a first outlet of the heat exchanger is communicated with a vaporizer, a second inlet of the heat exchanger is communicated with the reactor, and a second outlet of the heat exchanger is communicated with the fuel gas inlet.
Further, the alcohol cracking equipment further comprises a cooler for cooling the combustible cracking gas subjected to heat exchange through the heat exchanger, and the cooler is communicated with a second outlet of the heat exchanger and the fuel gas inlet.
Compared with the prior art, the invention has the beneficial effects that:
the combustible cracked gas which is more easily obtained and has lower cost can be provided for the kiln to be used as the fuel for replacing liquefied gas, coal gas or natural gas and the like, and the cost is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an alcohol pyrolysis gas combustion heating device for a kiln of the present invention.
In the figure: 1. a pump; 2. an induced draft fan.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, there is shown an alcohol pyrolysis gas combustion heating device for a kiln according to a preferred embodiment of the present invention, wherein the kiln according to the present invention is preferably a rotary kiln for burning magnetic powder, and the temperature of the kiln exhaust gas generated by the kiln exhaust gas is as high as about 300 ℃ to 400 ℃. Of course, the kiln may also be specifically an apparatus for firing ceramic articles.
The alcohol cracking gas combustion heating device for the kiln comprises a kiln and an alcohol cracking device, wherein the kiln is provided with a gas inlet and a tail gas outlet, the alcohol cracking device is used for cracking methanol into combustible cracking gas, the combustible cracking gas at least comprises hydrogen, carbon dioxide, carbon monoxide, methane and other components, the outlet of the alcohol cracking device is communicated with the gas inlet through a gas pipeline so as to provide the combustible cracking gas for the kiln, the combustible cracking gas is used as fuel of the kiln to reduce cost, the tail gas outlet is communicated with the outlet of a vaporizer in the alcohol cracking device so as to provide a heat source for heating and vaporizing the methanol for the vaporizer, waste heat of the tail gas of the kiln is used for replacing heat conduction oil or electric heating, the aim of reducing energy consumption can be achieved, meanwhile, the tail gas of the kiln can also be cooled, and the cooled tail gas of the kiln passes through the outlet of the vaporizer, The chimney discharges to the outside, thereby effectively avoiding thermal pollution and achieving more energy-saving and environment-friendly effects.
Specifically, the alcohol cracking apparatus includes a methanol reservoir, a heat exchanger, a vaporizer, a superheater, a reactor, a cooler, and a gas-liquid separator.
Wherein, the heat exchanger is used for supplying the combustible pyrolysis gas of high temperature that is produced by the reaction and the methanol heat transfer that lets in this heat exchanger, specifically speaking, the first entry and the methanol reservoir intercommunication of heat exchanger to provide methyl alcohol for the heat exchanger, the second entry and the export intercommunication of reactor of heat exchanger are in order to provide the combustible pyrolysis gas of high temperature for the heat exchanger.
The vaporizer is used for heating and vaporizing the methanol passing through the heat exchanger to form vaporized methanol, and particularly, the vaporizer is communicated with a first outlet of the heat exchanger so that the preheated methanol can be introduced into the vaporizer and exchanges heat with kiln tail gas introduced into the vaporizer to be heated and vaporized.
In particular, the heat exchanger and the vaporizer mentioned above may be a jacketed heat exchanger or a tubular heat exchanger.
The superheater is used for heating the vaporized methanol to a temperature required for the methanol cracking reaction, and a heat source of the superheater can be provided by an electric heating heat conduction oil furnace or an electric heating body or a steam boiler.
Utilize combustible pyrolysis gas of high temperature and the methyl alcohol that lets in the heat exchanger to carry out the heat transfer, can realize preheating methyl alcohol, combine to preheat, vaporization heating and overheated mode heat methyl alcohol, can make methyl alcohol can fully vaporize, and make the temperature of methyl alcohol can reach the required temperature of schizolysis reaction fast, in the middle of this process, accomplish make full use of reaction heat and heated methyl alcohol, avoid the wasting of resources, secondly, combine the heat exchanger to preheat, vaporizer heating and the mode that the over heater heats the cubic and realizes carrying out fully vaporization to methyl alcohol, can reach the purpose of consuming the heat of conduction oil less in the over heater heating stage, accomplish to save the power then, thereby reduce the energy consumption, can suitably cool down combustible pyrolysis gas of high temperature again simultaneously, and then improve combustible pyrolysis gas's safety in utilization.
The reactor is used for promoting the vaporized methanol heated by the heater to carry out catalytic cracking reaction and conversion reaction so as to generate high-temperature combustible cracking gas. Specifically, the heat source of the reactor can be provided by an electrically heated heat-conducting oil furnace or an electrically heated body or a steam boiler, and in the embodiment, the heat source of the reactor is preferably provided by an electrically heated heat-conducting oil furnace to improve the heating efficiency.
The cooler is used for cooling the combustible pyrolysis gas after the heat exchanger cooling, particularly, the entry of cooler and the second export intercommunication of heat exchanger, after the cooler cooling, the temperature of combustible pyrolysis gas can be reduced to being suitable for the temperature that can directly put into use, improves the safety in utilization, simultaneously, under the effect of cooler, partial steam boiler and the unreacted methyl alcohol among the combustible pyrolysis gas also can be condensed, can play the effect of purifying combustible pyrolysis gas, in order to improve the purity of combustible pyrolysis gas. In this embodiment, the cooler is preferably a two-stage cooler.
The gas-liquid separator is used for carrying out gas-liquid separation on the cooled combustible cracked gas, specifically, an inlet of the gas-liquid separator is communicated with an outlet of the cooler, an outlet of the gas-liquid separator is communicated with a fuel gas inlet, and after the gas-liquid separation, condensed liquid in the combustible cracked gas is intercepted, so that the gas-liquid separation is realized, and the combustible cracked gas is dried.
In a preferred embodiment, a first ventilator for sucking kiln tail gas is further arranged between the tail gas outlet and the inlet of the vaporizer, and the first ventilator can better collect the kiln tail gas, so that the collection efficiency of the kiln tail gas is higher. Specifically, this first ventilation blower is the draught fan.
More specifically, as shown in fig. 1, in order to provide oxygen required for the combustion reaction, the combustion heating apparatus for alcohol pyrolysis gas for a kiln further includes an air pipeline, and a second ventilator 2 and an air filter which are disposed on the air pipeline, wherein the second ventilator 2 and the air filter are both communicated with an inlet of the air pipeline and disposed close to an inlet of the air pipeline, an outlet of the air pipeline is communicated with a gas inlet, and when in use, external air is filtered by the air filter under the action of the second ventilator 2, enters the kiln and is mixed with combustible pyrolysis gas to realize the combustion reaction, so as to perform combustion heating on the kiln. Specifically, the second ventilator is a blower or a draught fan.
As a preferred embodiment, the outlet of the air pipeline is communicated with the gas pipeline arranged between the gas-liquid separator and the gas inlet, so that the combustible pyrolysis gas can be fully mixed with the air before entering the kiln, thereby enabling the combustion reaction to be more complete, and reducing the consumption of the combustible pyrolysis gas, namely reducing the energy consumption.
Specifically, the working principle of the alcohol pyrolysis gas combustion heating device for the kiln is as follows:
the methanol is pumped into the heat exchanger through the pump 1, and it can be understood that when the heat exchanger is started, the heat exchanger has no heat source, the methanol is not heated in the heat exchanger, and the methanol can be preheated only after high-temperature combustible pyrolysis gas is filled into the heat exchanger;
the methanol is introduced into the vaporizer, and it can be understood that, when the vaporizer is started, the vaporizer does not have a heat source, the methanol cannot be heated and vaporized in the heat exchanger, and the methanol can be heated and vaporized only after the kiln tail gas is injected into the vaporizer, specifically, the methanol can be vaporized when the temperature of the kiln tail gas reaches 300-400 ℃ and the methanol is heated to more than 140 ℃, so that the methanol can be vaporized by heating the methanol by the kiln tail gas;
heating the vaporized methanol by using a superheater to raise the temperature of the vaporized methanol to a temperature required for a cracking reaction, specifically, the temperature required for the cracking reaction is 250 ℃ or higher;
introducing the vaporized methanol heated by the superheater into a reactor for catalytic cracking to generate combustible cracked gas with the temperature of more than 250 ℃;
introducing high-temperature (the temperature is more than 250 ℃) combustible cracked gas into a heat exchanger, so that the heat of the high-temperature combustible cracked gas is transferred to methanol introduced into the heat exchanger, and preheating the methanol, wherein specifically, the temperature of the preheated methanol can reach about 120-140 ℃, meanwhile, the combustible cracked gas can be properly cooled, and is called as first cooled combustible cracked gas, and specifically, after cooling, the temperature of the first cooled combustible cracked gas is about 100 ℃;
introducing the first cooled combustible pyrolysis gas into a cooler to cool the first cooled combustible pyrolysis gas, and simultaneously condensing a steam boiler and vaporized methanol in the first cooled combustible pyrolysis gas through the cooler to purify the combustible pyrolysis gas, namely the combustible pyrolysis gas after being cooled by the cooler, wherein the temperature of the second cooled combustible pyrolysis gas after being cooled by the cooler is below 40 ℃;
introducing the combustible cracked gas subjected to the second temperature reduction into a gas-liquid separator, intercepting condensed liquid in the combustible cracked gas subjected to the second temperature reduction through the gas-liquid separator to dry the combustible cracked gas, namely the combustible cracked gas after drying, mixing the combustible cracked gas after drying with air, and introducing the mixture into a gas inlet for combustion and heating;
introducing kiln tail gas with the temperature of 300-400 ℃ into a vaporizer, and exchanging heat of methanol introduced into the vaporizer by using the kiln tail gas so as to heat and vaporize the methanol to form vaporized methanol.
To sum up, the alcohol pyrolysis gas combustion heating device for the kiln, provided by the invention, can provide combustible pyrolysis gas which is easier to obtain and lower in cost as a fuel for replacing liquefied gas, coal gas, natural gas and the like for the kiln, so that the cost is greatly reduced, meanwhile, the tail gas of the kiln can be fully utilized for heating and vaporizing methanol, the energy consumption is further reduced, the cost is further reduced, more importantly, the tail gas of the kiln is properly cooled while the tail gas of the kiln is fully utilized, the thermal pollution is effectively avoided, and the purposes of saving energy and protecting environment are achieved.
The invention also provides a combustion heating method of the alcohol pyrolysis gas for the kiln, which specifically comprises the following steps:
s1: providing an alcohol cracking device, and communicating an outlet of the alcohol cracking device with a fuel gas inlet;
s2: filling methanol into an inlet of the alcohol cracking equipment, heating and vaporizing the methanol in the alcohol cracking equipment, then feeding the methanol into a reactor in the alcohol cracking equipment, and carrying out cracking reaction under the action of a catalyst in the reactor to generate combustible cracking gas at least comprising hydrogen, carbon dioxide and carbon monoxide, so that the combustible cracking gas is filled into the gas inlet;
s3: recovering kiln tail gas, filling the kiln tail gas into a vaporizer, heating the vaporizer by using the kiln tail gas, heating and vaporizing the methanol introduced into the vaporizer, simultaneously cooling the kiln tail gas, and discharging the cooled tail gas to the outside through a chimney.
The vaporizer is heated by recycling the kiln tail gas, so that the utilization rate of the kiln tail gas is improved, the economic value of the kiln tail gas is improved, the temperature of a factory building provided with a kiln can be reduced, the labor environment of the factory building is effectively improved, more importantly, the kiln tail gas is properly cooled in the process of utilizing the kiln tail gas, and the thermal pollution is effectively avoided.
To sum up, the alcohol pyrolysis gas combustion heating method for the kiln, provided by the invention, can provide combustible pyrolysis gas which is easier to obtain and lower in cost as a fuel for replacing liquefied gas, coal gas, natural gas and the like for the kiln, so that the cost is greatly reduced, meanwhile, the tail gas of the kiln can be fully utilized for heating and vaporizing methanol, the energy consumption is further reduced, the cost is further reduced, more importantly, the tail gas of the kiln is properly cooled while the tail gas of the kiln is fully utilized, the thermal pollution is effectively avoided, and the purposes of saving energy and protecting environment are achieved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The alcohol pyrolysis gas combustion heating method for the kiln is characterized by comprising the following steps of:
s1: providing an alcohol cracking device, and communicating an outlet of the alcohol cracking device with a fuel gas inlet of the kiln;
s2: and filling methanol into an inlet of the alcohol cracking equipment, heating and vaporizing the methanol in the alcohol cracking equipment, then enabling the methanol to enter a reactor in the alcohol cracking equipment, carrying out cracking reaction under the action of a catalyst in the reactor to generate combustible cracking gas, and filling the combustible cracking gas into the fuel gas inlet.
2. The combustion heating method of alcohol cracking gas for a kiln as set forth in claim 1, further comprising:
s3: retrieve kiln tail gas, utilize kiln tail gas heats the vaporizer among the alcohol cracking equipment, then to letting in methanol in the vaporizer heats the vaporization, simultaneously, it is right kiln tail gas cools down, and tail gas after the cooling is discharged to the external world.
3. The method of claim 1, wherein in step S2, the methanol is sequentially passed through a heat exchanger, a vaporizer, a superheater and a reactor in the alcohol cracking apparatus, wherein the vaporizer is used to heat and vaporize the methanol, the superheater is used to heat the vaporized methanol to a temperature required for a cracking reaction, the reactor is used to promote the cracking reaction of the vaporized methanol heated by the superheater to generate a combustible cracked gas, the combustible cracked gas is introduced into the heat exchanger to exchange heat with the methanol in the heat exchanger, which is referred to as a first cooled combustible cracked gas, and the first cooled combustible cracked gas is introduced into the gas inlet.
4. The combustion heating method of alcohol pyrolysis gas for a kiln as claimed in claim 3, wherein the combustible pyrolysis gas after the first temperature reduction is further cooled by a cooler and then is poured into the gas inlet, which is called as the combustible pyrolysis gas after the second temperature reduction.
5. The combustion heating method of alcohol pyrolysis gas for a kiln as claimed in claim 4, wherein the combustible pyrolysis gas after the second temperature reduction is injected into the gas inlet after gas-liquid separation.
6. The method for heating alcohol cracking gas in a kiln as claimed in claim 3, wherein the heat sources of the superheater and the reactor are both provided by an electrically heated heat-conducting oil furnace, or the heat sources of the superheater and the reactor are both provided by an electrically heated body, or the heat sources of the superheater and the reactor are both provided by a steam boiler.
7. The combustion heating method of alcohol pyrolysis gas for a kiln as claimed in claim 1, wherein the combustible pyrolysis gas is mixed with external air and then enters the gas inlet.
8. The alcohol cracking gas combustion heating device for the kiln is characterized by comprising the kiln and an alcohol cracking device for cracking methanol into combustible cracking gas, wherein the kiln is provided with a gas inlet, and an outlet of the alcohol cracking device is communicated with the gas inlet.
9. The combustion heating device of alcohol cracking gas for the kiln as claimed in claim 8, wherein the alcohol cracking equipment at least comprises a vaporizer, a superheater and a reactor which are sequentially communicated, the vaporizer is used for heating and vaporizing methanol, the superheater is used for heating vaporized methanol to a temperature required by cracking reaction, the reactor is used for promoting the vaporized methanol heated by the superheater to undergo cracking reaction so as to generate combustible cracking gas, an outlet of the reactor is communicated with the gas inlet, an exhaust gas outlet of the kiln is communicated with an inlet of the vaporizer, and an outlet of the vaporizer is communicated with the outside.
10. The alcohol cracking gas combustion heating device for the kiln as claimed in claim 9, wherein the alcohol cracking equipment further comprises a heat exchanger, the heat exchanger is used for heat exchange between high-temperature combustible cracking gas generated by the reactor and methanol introduced into the heat exchanger, a first inlet of the heat exchanger is used for being communicated with a methanol storage, a first outlet of the heat exchanger is communicated with a vaporizer, a second inlet of the heat exchanger is communicated with the reactor, and a second outlet of the heat exchanger is communicated with the fuel gas inlet.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112661110A (en) * | 2020-12-10 | 2021-04-16 | 广东醇氢新能源研究院有限公司 | Hydrogen production system |
| CN113188147A (en) * | 2021-04-19 | 2021-07-30 | 华中科技大学 | Energy self-sustaining alcohol-hydrogen boiler |
| CN113188147B (en) * | 2021-04-19 | 2023-03-14 | 华中科技大学 | Energy self-sustaining alcohol-hydrogen boiler |
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