CN112628704A - Steam generator and hydrogen production method - Google Patents
Steam generator and hydrogen production method Download PDFInfo
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- CN112628704A CN112628704A CN202110003210.6A CN202110003210A CN112628704A CN 112628704 A CN112628704 A CN 112628704A CN 202110003210 A CN202110003210 A CN 202110003210A CN 112628704 A CN112628704 A CN 112628704A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000001257 hydrogen Substances 0.000 title claims abstract description 9
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 102
- 238000005485 electric heating Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 43
- 230000003197 catalytic effect Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 96
- 238000005338 heat storage Methods 0.000 claims description 36
- 238000002485 combustion reaction Methods 0.000 claims description 31
- 239000002912 waste gas Substances 0.000 claims description 31
- 238000009825 accumulation Methods 0.000 claims description 23
- 238000006555 catalytic reaction Methods 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 20
- 238000013021 overheating Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention provides a steam generator and a hydrogen production method. The steam generator includes: the liquid storage cavity is arranged at one end of the steam generator; at least one vapor tube, one end of each vapor tube is connected with the liquid storage cavity; a heating device, comprising: the first electric heating device is connected with the liquid storage cavity and is used for heating the liquid medium in the liquid storage cavity; the catalytic combustion heating device group is arranged at the other end of the steam generator; wherein the vapor tube passes through the catalytic combustion heating device group, and the catalytic heating device group can heat the vapor tube. The invention solves the problems of poor environmental protection and low economic benefit of the existing steam generator.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a steam generator and a hydrogen production method.
Background
Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into hot water or steam. In the prior art, a steam generator is mainly a coal-fired steam generator, but because coal combustion can generate a large amount of waste gas and a large amount of coal cannot be completely combusted, a coal-fired heating mode has the defects of environmental pollution, low utilization rate, low economic benefit and the like; in order to reduce the pollution to the environment, at present, a large number of electric heating steam generators are adopted, and although the electric heater does not generate waste gas, the electric heater has huge power consumption, so the electric heater has the defects of large energy consumption, low economic benefit and the like.
In conclusion, the existing steam generator has the problems of poor environmental protection and low economic benefit.
Disclosure of Invention
The invention solves the problems that the existing steam generator is not green enough and has low economic benefit.
To solve the above problems, the present invention provides a steam generator comprising: the liquid storage cavity is arranged at one end of the steam generator; the first electric heating device is connected with the liquid storage cavity and is used for heating the liquid medium in the liquid storage cavity; the catalytic combustion heating device group is arranged at the other end of the steam generator; at least one vapor tube, one end of each vapor tube is connected with the liquid storage cavity; wherein the vapor tube passes through the catalytic combustion heating device group, and the catalytic heating device group can heat the vapor tube.
And heating the liquid medium in the liquid storage cavity and the steam pipe through the first electric heating device and the catalytic combustion heating device group to obtain steam, and outputting the steam to an external pipeline communicated with the steam generator along the steam pipe.
Further, the catalytic combustion heating group includes at least: a tail gas inlet cavity; a combustion catalyst chamber; a heat storage heating cavity; a vapor superheating cavity; wherein, tail gas inlet chamber the burning catalysis chamber heat accumulation heating chamber with the setting is stacked in proper order in the vapour overheat cavity, separates through the perforated plate between two liang.
In this embodiment, tail gas inlet chamber, burning catalysis chamber, heat accumulation heating chamber and the superheated cavity of vapour can make full use of the waste energy in the tail gas and the waste heat in the hot waste gas is right the medium in the vapour pipe heats, has improved the utilization ratio of the energy.
Further, the tail gas inlet chamber further comprises: the tail gas inlet is arranged on the outer side of the steam generator shell; wherein, the tail gas inlet cavity is arranged at the lower part of the catalytic combustion cavity.
In this embodiment, the tail gas inlet is used for letting in tail gas, and sets up it in the lower part of catalytic combustion chamber, and tail gas can be in the tail gas inlet chamber reentrant catalytic combustion chamber after the misce bene improves its temperature homogeneity.
Further, the combustion catalyst chamber further comprises: an exhaust gas inlet disposed outside the steam generator housing; a combustion catalyst disposed between the steam generator and the steam tube; wherein, the combustion catalysis cavity is arranged at the upper part of the tail gas inlet cavity.
In this embodiment, the exhaust gas inlet is used for introducing hot exhaust gas, and the combustion catalyst is used for catalytically combusting the exhaust gas to generate heat. On one hand, the heat of the hot waste gas can be absorbed, and the energy utilization rate is improved; on the other hand, the hot exhaust gas can properly heat the combustion catalyst to enable the temperature of the combustion catalyst to reach the optimal temperature for reacting and combusting with the tail gas, and the reaction efficiency is improved.
Further, the heat accumulation heating cavity further comprises: a heat storage ball provided between the steam generator and the steam pipe; a fin provided outside each of the vapor tubes; or a heat storage block is arranged in the heat storage heating cavity, and a through hole matched with the steam pipe is formed in the heat storage block and used for inserting the steam pipe; wherein, the heat accumulation heating cavity is arranged at the upper part of the combustion catalysis cavity.
In this embodiment, the heat storage balls or the heat storage blocks may reduce heat loss of the hot exhaust gas, improve a utilization rate of heat energy in the hot exhaust gas, and the fins may increase a heat exchange area of the steam pipe, and improve heat exchange efficiency. The heat storage ball or the heat storage block can store partial heat of the hot waste gas, so that the heat of the hot waste gas is fully absorbed and stored in the heat storage ball or the heat storage block, the heat is prevented from being taken away by the hot waste gas to cause heat waste, and the heat storage ball or the heat storage block continuously releases the heat to the steam pipe after the hot waste gas flows away, continuously heats steam in the steam pipe, and improves the temperature of the steam pipe. Through setting up heat accumulation ball or heat accumulation piece for the heat of hot waste gas is preserved in a large number, and has accomplished the heat transfer, has improved heat utilization.
Further, the vapor superheating cavity further comprises: an exhaust gas outlet disposed outside the steam generator housing; the steam overheating cavity is overheated in an electric heating mode and/or a catalytic combustion heating mode and/or a hot exhaust gas heating mode, and the steam overheating cavity is arranged at the upper part of the heat storage heating cavity.
In this embodiment, the steam overheating cavity heats the steam into the overheated steam with a certain temperature by the catalytic combustion heating and/or the hot exhaust gas heating, which is beneficial to improving economic benefits.
Furthermore, the steam generator also comprises a second electric heating device, the second electric heating device is connected with the catalytic combustion heating device group, and the steam pipe sleeve is arranged on the second electric heating device.
In this embodiment, the second electric heating device may overheat the steam, and the steam may reach the optimal hydrogen production catalytic reaction temperature after being overheated, thereby improving the hydrogen production efficiency.
Further, the first electric heating device and the second electric heating device each include a plurality of electric heaters arranged at intervals, wherein each of the electric heaters includes: an electrically heated base; and the electric heating pipe is connected to one side of the electric heating base, which is close to the steam pipe.
In this embodiment, the electric heating pipe is disposed in the vapor pipe.
In another aspect, a hydrogen production method provided by an embodiment of the present invention includes the steam generator, and the method for adjusting heating of the steam generator in real time includes: step S1, when starting the machine, firstly starting the first electric heating device and/or starting the waste gas inlet to heat the liquid medium in the liquid storage cavity and the vapor pipe to generate vapor; step S2, starting the second electric heating device to superheat the steam; step S3, detecting the temperature of the steam, and when the temperature of the steam reaches a set upper limit threshold value T0, closing an electric heater and/or reducing the air inflow of the exhaust gas inlet and the exhaust gas inlet; step S4, opening the tail gas inlet, introducing the tail gas into the combustion catalysis cavity, reacting with the combustion catalyst and heating the medium in the steam pipe; and step S5, detecting the temperature of the steam, and increasing the temperature of the steam when the temperature of the steam is lower than a set lower limit threshold value T1.
In the embodiment, through the cooperation of various heating modes, the heating efficiency is effectively improved, the hot exhaust emission and the energy consumption are reduced, and the technical purposes of energy conservation, emission reduction and environmental protection are realized.
Further, the step S5 specifically includes: and when the steam temperature is lower than a set lower limit threshold value T1, the first electric heating device and/or the second electric heating device are/is started and/or the air inflow of the exhaust gas inlet and the exhaust gas inlet is increased, so that the steam temperature is increased.
In this embodiment, because the temperature of the vapor is not controllable, when the temperature of the vapor is too low, the vapor can be heated in a variety of heating manners.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) the first electric heating device and the catalytic combustion heating device set are used for heating the liquid medium in the liquid storage cavity and the medium in the steam pipe in a mixed mode, so that the heating efficiency is improved, and the energy is saved.
(2) The medium in the steam pipe is heated by fully utilizing the residual energy in the tail gas and the residual heat in the hot waste gas, so that the utilization rate of energy is improved, and the emission of the hot waste gas is reduced.
Drawings
Fig. 1 is a schematic structural view of a steam generator 100 according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the steam generator 100 of FIG. 1;
FIG. 3 is a schematic structural view of an electric heater;
fig. 4 is a schematic flow chart of a heating real-time adjustment method of a steam generator according to a second embodiment of the present invention;
description of reference numerals:
1 is a liquid storage cavity; 2 is a first electric heating device; 3 is a catalytic combustion heating device group; 4 is a steam pipe; 5 is a second electric heating device; 6 is a steam accommodating cavity; 31 is a tail gas inlet cavity; 32 is a combustion catalyst chamber; 33 is a heat accumulation heating cavity; 34 is a steam overheating cavity; 70 is an electric heating tube; 80 is an electric heating base; 100 is a heating device; 311 tail gas inlet; 321 is an exhaust gas inlet; 322 is a control valve; 323 is a temperature detection device; 331 is a fin; 332 is a charging joint; 341 is an exhaust outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1 and 2, which are schematic structural views of a steam generator 100 according to a first embodiment of the present invention, the steam generator 100 includes: the device comprises a liquid storage cavity 1, a first electric heating device 2, a catalytic combustion heating device group 3 and at least one steam pipe 4. Wherein, the steam pipe 4 passes through the catalytic combustion heating device group 3 and is connected with the liquid storage cavity 1; the first electric heating device 2 is connected with the liquid storage cavity 1; the catalytic combustion heating device group 3 and the liquid storage cavity 1 are arranged in a stacked mode.
Specifically, the catalytic combustion heating device group 3 includes, for example: tail gas inlet chamber 31, tail gas inlet chamber 31 set up in catalytic combustion heating device group 3 lower part to connect the liquid storage chamber 1, tail gas inlet chamber 31 is equipped with tail gas entry 311, and tail gas is followed tail gas entry 311 input steam generator and evenly distributed are in tail gas inlet chamber 31.
Preferably, tail gas entry 311 includes air intake pipe, tail gas intake pipe and methyl alcohol intake pipe, and air and tail gas pass through respectively the air intake pipe with the tail gas intake pipe preheats the back and gets into tail gas entry 311, and in order to improve the efficiency and the calorific capacity of catalytic combustion heating, passes through partial methyl alcohol the overheated gasification back of methyl alcohol intake pipe lets in tail gas entry 311, with the air with the tail gas mixture obtains the mist.
Further, a combustion catalysis cavity 32 is arranged in the catalytic combustion heating device group 3, the combustion catalysis cavity 32 is connected with the tail gas inlet cavity 31, and the combustion catalysis cavity 32 is provided with a waste gas inlet 321 and a combustion catalyst; wherein, be equipped with the perforated plate between tail gas inlet chamber 31 and the burning catalysis chamber 32 to can make in the tail gas inlet chamber 31 gas mixture evenly get into burning catalysis chamber 32 with the burning catalyst takes place catalytic combustion exothermic reaction, prevents gas mixture only with a part the burning catalyst reaction has effectively improved catalytic combustion agent's availability factor and reaction exothermic efficiency.
Preferably, the exhaust gas inlet 321 is provided with a control valve 322, and the control valve 322 is provided in the exhaust gas inlet 321 to control the flow rate of the hot exhaust gas at the exhaust gas inlet. The control valve may be an electrically-controlled valve, or may be other devices that can perform the function of controlling the flow of the hot exhaust gas, and is not limited herein.
Preferably, the tail gas inlet chamber 31 and the combustion catalyst chamber 32 may be configured as a single chamber, and the tail gas inlet 311, the waste gas inlet 321 and the combustion catalyst are disposed in the single chamber, so as to simplify the structure of the catalytic combustion heating apparatus 3.
Further, set up heat accumulation heating chamber 33 in catalytic combustion heating device group 3, heat accumulation heating chamber 33 is connected and is burnt catalysis chamber 32, is equipped with the perforated plate between burning catalysis chamber 32 and the heat accumulation heating chamber 33, is equipped with the heat accumulation piece in the heat accumulation heating chamber 33, be provided with on the heat accumulation piece with steam pipe complex through-hole for insert steam pipe 4, work as hot waste gas passes through perforated plate to heat accumulation heating chamber 33 between burning catalysis chamber 32 and the heat accumulation heating chamber 33 in, the heat accumulation piece preserves the heat in the hot waste gas heats, avoids hot waste gas circulation is fast, the heat flows away in time too late to absorb, adopt behind the heat accumulation piece, can fully absorb the heat, make hot waste gas heat is persisted in the heat accumulation piece, later through the heat accumulation piece again with the even heat transfer of heat for the medium of treating in every steam pipe 4, the recycling of the high-temperature waste gas and the uniformity of heat transfer are realized. Preferably, heat storage balls, fins 331 and a feeding connector 332 are further arranged in the heat storage heating cavity 33, and the heat storage balls in the heat storage heating cavity 33 can be replaced through the feeding connector 332; wherein, heat storage ball and fin 331 cooperate each other, work as hot waste gas passes through when porous plate to heat accumulation heating chamber 33 between burning catalysis chamber 32 and the heat accumulation heating chamber 33 in, the heat storage ball can prolong hot waste gas's dwell time in heat accumulation heating chamber 33, and adopt behind the heat storage ball, can be right the heat of hot waste gas fully absorbs, makes the heat of hot waste gas is persisted in the heat storage ball, later pass through the heat storage ball is again with the even fin 331 of transferring to every steam tube 4 outside of heat, and the fin 331 of every steam tube 4 outside of rethread evenly transmits the heat to the medium of treating in every steam tube 4, realizes right the homogeneity of the reuse of high temperature waste gas and heat transfer
Further, a steam overheating cavity 34 is arranged in the catalytic combustion heating device group 3, the steam overheating cavity 34 is connected with the heat storage heating cavity 33, a porous plate is arranged between the heat storage heating cavity 33 and the steam overheating cavity 34, and the steam overheating cavity 34 is provided with an exhaust gas outlet 341; wherein, the steam overheating cavity 34 adopts an electric heating and/or catalytic combustion heating and/or hot waste gas heating mode for overheating; preferably, the waste gas outlet 341 and the charging connector 332 are cooperatively disposed as an integrated structure for improving the sealing performance of the steam generator.
Preferably, one or more exhaust gas inlet chambers 31, combustion catalysis chambers 32, heat storage heating chambers 33 or steam overheating chambers 34 can be arranged according to actual requirements and are arranged in a stacking mode.
Preferably, the catalytic combustion heating device group 3 further includes a vacuum heat-insulating housing and a heat-insulating layer, and the vacuum heat-insulating housing and the heat-insulating layer are matched with each other to improve the heating efficiency of the catalytic combustion heating device group 3.
Continuing to refer to fig. 2, the liquid storage cavity 1 is arranged at one end of the steam generator, the liquid storage cavity 1 comprises a first flange and a second flange, the first flange and the second flange are connected to form the liquid storage cavity 1, the first flange is provided with a liquid supplementing port, and one side of the second flange, which is close to the first flange, is provided with a groove. The concave cavity is formed by arranging the recess in the middle of the first flange plate and/or the second flange plate, so that the liquid storage cavity 1 can be formed in the whole equipment without adding a new structure, and on one hand, the cost is saved; on the other hand, the volume of the concave cavity formed by the concave flange plate is small, so that the solution can be circularly heated after directly entering the concave cavity, the volume of the whole equipment is further reduced, a pressure container is not formed, and the inspection times are reduced.
Preferably, the steam generator 100 further comprises a steam accommodating cavity 6, the steam accommodating cavity 6 is arranged at the other end of the steam generator, the steam accommodating cavity 6 is provided with a steam outlet, the steam outlet is used for outputting steam in the steam accommodating cavity 6, and a temperature detection device 322 is arranged at the steam outlet and is used for detecting the temperature of the steam.
For example, the catalytic combustion heating device group 3 is connected between the liquid storage cavity 1 and the vapor containing cavity 6, one end of the vapor pipe 4 is connected with the liquid storage cavity 1, the other end of the vapor pipe is connected with the vapor containing cavity 6, the vapor pipe 4 penetrates through the catalytic combustion heating device group 3, and the vapor pipe 4 is communicated with the liquid storage cavity 1 and the vapor containing cavity 6.
Preferably, the steam generator 100 further comprises a liquid level detection device, wherein the liquid level detection device is connected to the outside of the steam generator, and is communicated with the liquid storage cavity 1 and the steam accommodating cavity 6 for detecting the height of the water level in the steam generator.
Preferably, the steam generator 100 further includes a pressure detection device, which is connected to the outside of the steam generator and is used for detecting the pressure in the steam generator and preventing the steam generator from explosion due to excessive pressure.
With continued reference to fig. 2, the steam generator 100 further includes a first electric heating device 2 and a second electric heating device 5, the first electric heating device 2 and the second electric heating device 5 have the same structure and each include a plurality of electric heaters arranged at intervals, as shown in fig. 3, each electric heater includes an electric heating pipe 70 and an electric heating base 80, and the electric heating pipe 70 is connected to the electric heating base 80; preferably, the electric heating tube 70 is a U-shaped heating element, and may be of other structures capable of realizing a heating function, which is not limited herein.
Further, the first electric heating devices 2 are connected with the liquid storage cavity 1, and the electric heater of each first electric heating device 2 penetrates through the liquid storage cavity 1 and is inserted into one end of the vapor pipe 4 close to the liquid storage cavity 1; the second electric heating devices 5 are arranged in the steam accommodating cavity 6 and the steam superheating cavity 34, and the electric heater of each second electric heating device 5 passes through the steam accommodating cavity 6 and is inserted into the steam pipe 4.
Preferably, the steam generator 100 can also realize that the whole steam generator can be electrically heated only by arranging the first electric heating device 2 or only the second electric heating device 5 by using the electric heating pipe 70 with the length capable of penetrating through the liquid storage cavity 1, the catalytic combustion heating device group 3 and the steam accommodating cavity 6.
[ second embodiment ]
Referring to fig. 4, a hydrogen production method according to a second embodiment of the present invention includes the first embodiment of the steam generator, and the method for adjusting the heating of the steam generator in real time includes:
step S1, when starting the machine, firstly starting the first electric heating device and/or starting the waste gas inlet to heat the liquid medium in the liquid storage cavity and the vapor pipe to generate vapor;
step S2, starting the second electric heating device and/or opening the waste gas inlet to perform overheating treatment on the steam;
step S3, detecting the temperature of the steam, and when the temperature of the steam reaches a set upper limit threshold value T0, closing the electric heater and/or reducing the air intake quantity of the exhaust gas inlet;
step S4, opening the tail gas inlet, introducing the tail gas into the combustion catalysis cavity, reacting under the action of the combustion catalyst and heating the medium in the steam pipe;
and step S5, detecting the temperature of the steam, and increasing the temperature of the steam when the temperature of the steam is lower than a set lower limit threshold value T1.
The process of the real-time heating adjustment method of the steam generator is described in detail with reference to fig. 1 to 3, specifically:
firstly, introducing the liquid medium into the liquid storage cavity 1 through the liquid supplementing port, wherein the part of the liquid medium is positioned in the vapor pipe 4, and the liquid medium is less than 30L; preferably, the liquid level detection device detects the liquid level in the steam generator, and when the water level is too low, the liquid medium is conveyed into the liquid storage cavity 1 through the liquid supplementing port.
Then starting the first electric heating device 2 and opening an exhaust gas inlet 321 to heat the liquid medium in the liquid storage chamber 1 and the vapor pipe 4 to obtain the vapor, wherein the flow rate of the hot exhaust gas at the exhaust gas inlet 321 is controlled by a control valve 322, and the hot exhaust gas is the aggregate of all high-temperature waste exhaust gas in the plant; preferably, the pressure detection device detects the pressure in the steam generator, thereby preventing the steam generator from producing accidents such as explosion due to excessive pressure, and adjusting the flow rate of the hot exhaust gas to control the pressure in the steam generator.
Then, the temperature of the steam in the steam accommodating cavity 6 is detected by the temperature detection device 323, and if the steam temperature is lower than the preset steam output temperature, the second electric heating device 5 is started, the waste gas inlet 321 is maintained to be in an open state, and the steam is further heated to obtain superheated steam; and when the steam temperature reaches the preset steam output temperature, closing the second electric heating device 5. Preferably, the superheating mode can also be a hot exhaust gas heating mode and/or a catalytic combustion heating mode to perform superheating treatment on the steam.
Next, the temperature of the steam in the steam generator is detected, when the temperature of the steam reaches the upper threshold T0, the first electric heating device 2 is turned off and the tail gas is introduced into the steam generator through the tail gas inlet 311, a catalytic combustion exothermic reaction occurs under the action of the combustion catalyst, the medium in the steam tube 4 is heated and exhaust gas is generated, the obtained exhaust gas is mixed with the hot exhaust gas introduced from the exhaust gas inlet 321, and enters the heat storage heating cavity 33, and heat is transferred to the steam tube 4 through the heat storage balls and the fins 331 or through the heat storage blocks.
Finally, the steam temperature in the steam generator is continuously detected, when the steam temperature is lower than the set lower threshold value T1, the first electric heating device 2 is started to heat, or the steam temperature is increased by increasing the air inflow of the hot exhaust gas and the tail gas.
Of course, the air inflow of the hot exhaust gas and the exhaust gas can be increased or decreased according to the real-time temperature and the real-time pressure of the steam, and the first electric heating device 2 can be selectively opened or closed, so that the real-time regulation and control of the steam temperature can be realized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A steam generator, comprising:
the liquid storage cavity is arranged at one end of the steam generator;
at least one vapor tube, one end of each vapor tube is connected with the liquid storage cavity;
a heating device, comprising:
the first electric heating device is connected with the liquid storage cavity and is used for heating the liquid medium in the liquid storage cavity;
the catalytic combustion heating device group is arranged at the other end of the steam generator;
wherein the vapor tube passes through the catalytic combustion heating device group, and the catalytic heating device group can heat the vapor tube.
2. The steam generator of claim 1, wherein the catalytic combustion heating set includes at least one or more of:
a tail gas inlet cavity;
a combustion catalyst chamber;
a heat storage heating cavity;
a vapor superheating cavity;
wherein, the tail gas inlet cavity or the combustion catalysis cavity or the heat storage heating cavity or the steam overheating cavity are arranged in a stacking way.
3. The steam generator of claim 2, wherein the catalytic combustion heating device set includes a tail gas inlet chamber, the tail gas inlet chamber further comprising:
the tail gas inlet is arranged on the outer side of the steam generator shell;
wherein, the tail gas inlet cavity is arranged at the lower part of the catalytic combustion heating device group.
4. The steam generator of claim 3, wherein the catalytic combustion heating device set further includes a combustion catalyst chamber, the combustion catalyst chamber further including:
an exhaust gas inlet disposed outside the steam generator housing;
a combustion catalyst disposed between the steam generator and the steam tube;
wherein, the combustion catalysis cavity is arranged at the upper part of the tail gas inlet cavity.
5. The steam generator of claim 4, wherein the catalytic combustion heating apparatus set further comprises a thermal storage heating chamber, the thermal storage heating chamber further comprising:
a heat storage ball provided between the steam generator and the steam pipe;
a fin provided outside each of the vapor tubes;
or a heat storage block is arranged in the heat storage heating cavity, and a through hole matched with the steam pipe is formed in the heat storage block and used for inserting the steam pipe;
wherein, the heat accumulation heating cavity is arranged at the upper part of the combustion catalysis cavity.
6. The steam generator of claim 5, wherein the catalytic combustion heating device set further comprises a steam superheating chamber, the steam superheating chamber further comprising:
an exhaust gas outlet disposed outside the steam generator housing;
the steam overheating cavity is overheated in an electric heating mode and/or a catalytic combustion heating mode and/or a hot exhaust gas heating mode, and the steam overheating cavity is arranged at the upper part of the heat storage heating cavity.
7. The steam generator as recited in claim 6, further comprising a second electrical heating device disposed within the steam superheating chamber and inserted within the steam pipe.
8. The steam generator of claim 7, wherein the first and second electrical heating devices each include a plurality of spaced apart electrical heaters, wherein each of the electrical heaters includes:
an electrically heated base;
and the electric heating pipe is connected to one side of the electric heating base, which is close to the steam pipe.
9. A method for producing hydrogen, comprising the steam generator of claim 8, wherein the method for adjusting the heating of the steam generator in real time comprises:
step S1, when starting the machine, firstly starting the first electric heating device and/or starting the waste gas inlet to heat the liquid medium in the liquid storage cavity and the vapor pipe to generate vapor;
step S2, starting the second electric heating device and/or opening the waste gas inlet to perform overheating treatment on the steam;
step S3, detecting the temperature of the steam, and closing the first electric heating device and/or reducing the air intake quantity of the exhaust gas inlet when the temperature of the steam reaches a set upper limit threshold value T0;
step S4, opening the tail gas inlet, introducing the tail gas into the combustion catalysis cavity, reacting under the action of the combustion catalyst and heating the medium in the steam pipe;
and step S5, detecting the temperature of the steam, and increasing the temperature of the steam when the temperature of the steam is lower than a set lower limit threshold value T1.
10. The method for real-time adjustment of heating in a steam generator as claimed in claim 9, wherein the step S5 specifically comprises:
and when the steam temperature is lower than a set lower limit threshold value T1, the first electric heating device and/or the second electric heating device are/is started and/or the air inflow of the exhaust gas inlet and the exhaust gas inlet is increased, so that the steam temperature is increased.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020114360652 | 2020-12-10 | ||
| CN202011436065 | 2020-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112628704A true CN112628704A (en) | 2021-04-09 |
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| CN112696651A (en) * | 2020-12-10 | 2021-04-23 | 广东醇氢新能源研究院有限公司 | Steam generator and hydrogen production system |
| CN112573482B (en) * | 2020-12-10 | 2022-07-08 | 洛阳沃达节能科技有限公司 | Hydrogen production pipe of hydrogen production device and hydrogen production device |
| CN116443813A (en) * | 2023-02-27 | 2023-07-18 | 福州大学 | Ammonia decomposition reaction device and system |
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| KR100905290B1 (en) * | 2007-07-30 | 2009-07-02 | (주)오선텍 | A catalytic reactor for formation of the hydrogen |
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Effective date of registration: 20231228 Address after: Building 1, Unit 1, 2nd Floor, No. 112-1 Hongqiao Street, High tech Zone, Neijiang City, Sichuan Province, 641000, No. 21 BC Zone Applicant after: Sichuan Woyouda Technology Co.,Ltd. Address before: No.404, building 14, new town entrepreneurship center, Zengcheng low carbon headquarters park, No.400 Xincheng Avenue, Zengcheng District, Guangzhou, Guangdong Province Applicant before: Guangdong alcohol hydrogen New Energy Research Institute Co.,Ltd. |