CN210373373U - Double-tank fused salt coupling electric steam boiler and gas steam boiler heat supply system - Google Patents

Double-tank fused salt coupling electric steam boiler and gas steam boiler heat supply system Download PDF

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Publication number
CN210373373U
CN210373373U CN202020173668.7U CN202020173668U CN210373373U CN 210373373 U CN210373373 U CN 210373373U CN 202020173668 U CN202020173668 U CN 202020173668U CN 210373373 U CN210373373 U CN 210373373U
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molten salt
steam boiler
pipeline
tank
temperature molten
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穆世慧
赵曙光
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Beijing Minli Energy Storage Technology Co ltd
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Beijing Minli Energy Storage Technology Co ltd
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Abstract

The utility model discloses a double-tank fused salt coupling electric steam boiler and gas steam boiler heating system, which integrates the fused salt, the electric steam boiler and the gas steam boiler, solves the problem that the lowest load of the gas steam boiler in the terminal low-load demand period still far exceeds the demand, and avoids the problems of great energy waste and insufficient gas boiler shutdown maintenance time; meanwhile, off-peak electricity is actively utilized for heat storage and heat supply, so that the problems of high running cost and unstable heat supply of a single heat source are solved; the use amount of fuel gas can be reduced, and the problem of serious environmental pollution can be correspondingly improved.

Description

Double-tank fused salt coupling electric steam boiler and gas steam boiler heat supply system
Technical Field
The utility model relates to an energy storage thermal-arrest technical field, especially a two jars fused salt coupling electric steam boiler, gas steam boiler heating system.
Background
With the rapid development of economy, the traditional energy consumption in China is gradually increased, and a serious environmental pollution problem is caused. In order to promote the sustainable development of the coal industry, China strongly advocates the popularization and application of clean energy, and then the strategy of changing coal into electricity and changing coal into gas becomes a main energy strategy.
With the social development, the peak-to-valley difference between day and night power demands is increasing. At present, the average power demand peak-valley difference of most cities in China every day and night exceeds 60%, so that the load imbalance and the fluctuation of a power system are huge, great operation difficulty is brought to the power system, and the production efficiency and the operation cost are also greatly improved. In order to achieve the purpose of balancing power consumption, energy conservation and emission reduction, a mode of balancing power by peak clipping and valley filling is adopted, namely heat is stored by using low-price valley power. The all-weather heat supply mode not only is an effective way for reducing the heat supply operation cost, but also plays a positive role in balancing the electric balance power grid.
The molten salt has the remarkable characteristics of high temperature threshold, large heat storage capacity, low operation pressure, good heat transfer performance, high conversion efficiency and the like, and has great development potential and application prospect.
In the actual operation condition, a large-scale gas-steam boiler is available to supply steam for the load all the year round, the minimum load operation is still far higher than the requirement of a heat user, a large amount of waste of heat is caused, and meanwhile, the gas-steam boiler cannot obtain sufficient maintenance time all the year round, so that huge potential safety hazards are brought.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two jars fused salt coupling electric steam boiler, gas steam boiler heating system to the problem that exists among the prior art. The heating system integrates ternary coupling of the molten salt, the electric steam boiler and the gas steam boiler, solves the problem that the minimum load of the gas steam boiler in a terminal low-load demand period still far exceeds the demand, and avoids the problems of great energy waste and insufficient shutdown maintenance time of the gas steam boiler; meanwhile, off-peak electricity is actively utilized for heat storage and heat supply, so that the problems of high running cost and unstable heat supply of a single heat source are solved; the using amount of fuel gas can be reduced, and the problem of serious environmental pollution can be correspondingly improved.
For solving the above problem the utility model discloses a technical scheme as follows: designing a double-tank molten salt coupling electric steam boiler and gas steam boiler heating system, which is characterized by comprising a double-tank molten salt system and an electric steam boiler-gas steam boiler parallel system; the double-tank molten salt system comprises a molten salt electric heater, a low-temperature molten salt tank, a high-temperature molten salt tank, a low-temperature molten salt pump, a high-temperature molten salt pump, a molten salt distributor and a molten salt-steam generator, wherein the low-temperature molten salt pump is mounted on a top cover of the low-temperature molten salt tank, the high-temperature molten salt pump is mounted on a top cover of the high-temperature molten salt tank, and the molten salt distributor is mounted inside each of the low-temperature molten salt tank and the high-temperature molten salt tank; the lower part of the low-temperature molten salt pump is positioned in the low-temperature molten salt tank, the upper part of the low-temperature molten salt pump is communicated with the molten salt electric heater through a pipeline, and the molten salt electric heater is communicated with the molten salt uniform distributor in the high-temperature molten salt tank through another pipeline; the lower part of the high-temperature molten salt pump is positioned inside the high-temperature molten salt tank, the upper part of the high-temperature molten salt pump is communicated with a molten salt pipeline of the molten salt-steam generator through a pipeline, and the other end of the molten salt pipeline of the molten salt-steam generator is communicated with a molten salt uniform distributor inside the low-temperature molten salt tank through a pipeline;
a molten salt circulating channel is formed among the low-temperature molten salt tank, the low-temperature molten salt pump, the molten salt electric heater, the molten salt distributor inside the high-temperature molten salt tank, the high-temperature molten salt pump, the molten salt-steam generator, the molten salt distributor inside the low-temperature molten salt tank and the low-temperature molten salt tank;
the electric steam boiler-gas steam boiler parallel system comprises an electric steam boiler, a gas steam boiler, an energy saver, an air preheater, a gas separation cylinder, an air blower, an induced draft fan, a circulating pump, a water feed pump, a deaerator and a resin tank; the water inlet end of the waterway pipeline of the fused salt-steam generator is connected with the water inlet end of the electric steam boiler in parallel, the water outlet end of the waterway pipeline of the fused salt-steam generator is connected with the water outlet end of the electric steam boiler in parallel, and the water outlet ends of the waterway pipeline of the fused salt-steam generator and the water outlet end of the electric steam boiler are combined with the water outlet end of the gas steam boiler through a pipeline and then connected with the branch cylinder; the branch cylinder is communicated with an input pipeline of a heat user through one output pipeline and is connected with a deaerator through the other output pipeline; the tap water output pipeline is communicated with the resin tank, and the resin tank is connected with the deaerator through a pipeline; a water feeding pump is arranged on an output pipeline of the deaerator, and the output pipeline of the water feeding pump is combined with a hot user water return pipeline and then connected into a circulating pump; the output end of the circulating pump is provided with a pipeline connected with the water path input end of the energy saver, and is provided with another pipeline connected with the water inlet end of the water path pipeline of the molten salt-steam generator and the water inlet end of the electric steam boiler;
the water path output end of the energy saver is connected with the water inlet end of the gas steam boiler, a gas path output pipeline arranged on the gas steam boiler is connected with a gas path pipeline of the energy saver, the gas path output pipeline of the energy saver is connected with a heat collecting pipeline of the air preheater, and the heat collecting pipeline output end of the air preheater is connected with a chimney through an induced draft fan; the air input pipeline of the gas steam boiler is provided with an air blower, the output end of the air blower is connected with the input end of the preheating pipeline of the air preheater, and the output end of the preheating pipeline of the air preheater is connected with the air input end of the gas steam boiler.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a high low temperature fused salt twin tank carries out the heat accumulation, has weakened the thermal stress of single fused salt jar because of being heated the inhomogeneous production, has effectively avoided the jar body to cause jar body to damage because of being heated inhomogeneous production thermal stress inflation.
2. The utility model discloses a new-type fused salt uniform distributor carries out the evenly distributed of backward flow fused salt, makes fused salt thermally equivalent in the double tank, restraines the production on thermocline, improves and stores nearly 5% of thermal efficiency.
3. The fused salt double-tank of the utility model is mutually coupled with the electric steam boiler and the gas steam boiler to supply steam, thereby greatly improving the steam quality and effectively ensuring the stability of a heating system; meanwhile, the energy supply deficiency and the energy waste caused by large-scale fluctuation of the load can be effectively coped with. And also provides sufficient time for maintenance of the unit heat source.
4. The utility model discloses utilize the low ebb electricity heat accumulation, reduce the working costs by a wide margin, played effects such as balanced electric wire netting, energy saving and emission reduction, green, clean heat supply.
5. The utility model discloses fuse economizer and air heater, can improve the thermal conversion rate and promote the recycle of waste heat, improve whole thermal efficiency and reach 10%.
6. The utility model discloses the coupling allies oneself with supplies the mode and has ensured the steady supply that lasts of high-quality steam, can supply many side demands such as terminal life hot water, refrigeration and heating, can reach low temperature industry steam level requirement simultaneously.
7. The utility model discloses the heat accumulation heat supply load is big, and auxiliary assembly is less, arrangement structure is compact, area is little, has effectively reduced construction cost and has reduced the running cost, has better economic nature.
Drawings
For the purpose of simple and clear description, the technical solution of the present invention will be briefly described below.
Fig. 1 is an assembly diagram of an embodiment of the heating system of the present invention (wherein, the low-temperature molten salt tank and the high-temperature molten salt tank are both schematic front views).
The labels in the figures are: 1-a molten salt electric heater; 2-low temperature molten salt tank; 3-high temperature molten salt tank; 4-low temperature molten salt pump; 5-high temperature molten salt pump; 6-molten salt uniform distributor; 7-molten salt, steam generator; 8-an electric steam boiler; 9-a gas-steam boiler; 10-an energy saver; 11-an air preheater; 12-cylinder division; 13-a blower; 14-a draught fan; 15-a circulation pump; 16-a feed pump; 17-a deaerator; 18-a resin tank; 19-a first electrically powered stop valve; 20-a second electrically powered stop valve; 21-a third electrically operated stop valve; 22-a fourth electrically powered stop valve; 23-a fifth electrically powered stop valve; 24-a sixth electrically powered stop valve; 25-a seventh electrically powered stop valve; 26-an eighth electrically powered stop valve; 27-a ninth electrically powered stop valve; 28-tenth electrically powered stop valve; 29-eleventh electrically powered stop valve; 30-a twelfth electrically powered stop valve; 31-a thirteenth electrically powered stop valve; 32-a fourteenth electrically powered stop valve; 33-a fifteenth electric shutoff valve; 34-sixteenth electric stop valve; 35-chimney.
Detailed Description
The following description of the present invention will be made in conjunction with the accompanying drawings for the purpose of fully and clearly illustrating the present invention and covering but not limiting the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present patent.
The utility model provides a double-tank fused salt coupling electric steam boiler and gas steam boiler heating system (see figure 1, heating system for short), which comprises a double-tank fused salt system and an electric steam boiler-gas steam boiler parallel system; the double-tank molten salt system comprises a molten salt electric heater 1, a low-temperature molten salt tank 2, a high-temperature molten salt tank 3, a low-temperature molten salt pump 4, a high-temperature molten salt pump 5, a molten salt distributor 6 and a molten salt-steam generator 7, wherein the low-temperature molten salt pump 4 is installed on a top cover of the low-temperature molten salt tank 2, the high-temperature molten salt pump 5 is installed on a top cover of the high-temperature molten salt tank 3, and the molten salt distributor 6 is installed inside each of the low-temperature molten salt tank 2 and the high-temperature molten salt tank 3; the lower part of the low-temperature molten salt pump 4 is positioned in the low-temperature molten salt tank 2, the upper part of the low-temperature molten salt pump is communicated with the molten salt electric heater 1 through a pipeline, and the molten salt electric heater 1 is communicated with the molten salt uniform distributor 6 in the high-temperature molten salt tank 3 through another pipeline; the lower part of the high-temperature molten salt pump 5 is positioned inside the high-temperature molten salt tank 3, the upper part of the high-temperature molten salt pump is communicated with a molten salt pipeline of the molten salt-steam generator 7 through a pipeline, and the other end of the molten salt pipeline of the molten salt-steam generator 7 is communicated with a molten salt uniform distributor 6 inside the low-temperature molten salt tank 2 through a pipeline.
And a molten salt circulating channel is formed among the low-temperature molten salt tank 2, the low-temperature molten salt pump 4, the molten salt electric heater 1, the molten salt distributor 6 inside the high-temperature molten salt tank 3, the high-temperature molten salt pump 5, the molten salt-steam generator 7, the molten salt distributor 6 inside the low-temperature molten salt tank 2 and the low-temperature molten salt tank 2.
The electric steam boiler-gas steam boiler parallel system comprises an electric steam boiler (electric boiler for short) 8, a gas steam boiler (gas furnace for short) 9, an energy saver 10, an air preheater 11, a gas separation cylinder 12, an air blower 13, an induced draft fan 14, a circulating pump 15, a feed water pump 16, a deaerator 17 and a resin tank 18; the water inlet end of the waterway pipeline of the fused salt-steam generator 7 is connected with the water inlet end of the electric steam boiler 8 in parallel, the water outlet end of the waterway pipeline of the fused salt-steam generator 7 is connected with the water outlet end of the electric steam boiler 8 in parallel, and the water outlet ends of the waterway pipeline and the water outlet end of the gas steam boiler 9 are combined through a pipeline and then connected with the branch cylinder 12; the branch cylinder 12 is communicated with an input pipeline of a heat user through one output pipeline and is connected with a deaerator 17 through the other output pipeline; the tap water output pipeline is communicated with a resin tank 18, and the resin tank 18 is connected with a deaerator 17 through a pipeline; a water feeding pump 16 is arranged on an output pipeline of the deaerator 17, and the output pipeline of the water feeding pump 16 is combined with a hot user water return pipeline and then connected to a circulating pump 15; the output end of the circulating pump 15 is provided with a pipeline which is connected with the water path input end of the energy saver 10, and is provided with another pipeline which is connected with the water inlet end of the water path pipeline of the fused salt-steam generator 7 and the water inlet end of the electric steam boiler 8;
the water path output end of the energy saver 10 is connected with the water inlet end of the gas steam boiler 9, a gas path output pipeline arranged on the gas steam boiler 9 is connected with a gas path pipeline of the energy saver 10, the gas path output pipeline of the energy saver 10 is connected with a heat collecting pipeline of the air preheater 11, and the heat collecting pipeline output end of the air preheater 11 is connected with a chimney 35 through an induced draft fan 14; an air blower 13 is arranged on an air input pipeline of the gas steam boiler 9, the output end of the air blower 13 is connected with the input end of a preheating pipeline of the air preheater 11, and the output end of the preheating pipeline of the air preheater 11 is connected with the air input end of the gas steam boiler 9.
Wherein, the molten salt uniform distributor 6 adopts a conical centrifugal spraying technology and is made of high-temperature resistant stainless steel with the material more than 304 grades.
Wherein, the inner walls of the low-temperature molten salt tank 2 and the high-temperature molten salt tank 3 are respectively embedded with a composite film which is resistant to high temperature and oxidation corrosion.
The high-temperature molten salt pump 5 and the low-temperature molten salt pump 4 are submerged pumps made of high-temperature-resistant and corrosion-resistant steel.
Wherein, the molten salt used in the two-pot molten salt system comprises but is not limited to binary inorganic salt, ternary inorganic salt and organic molten salt, the molten salt flows in a liquid state in the molten salt circulation channel, and the preparation raw material comprises but is not limited to nitrate (NaNO)3、NaNO2、KNO3) Chloride salts (NaCl, KCl, MgCl)2) And the like.
Wherein, each element equipment is provided with an inlet and outlet electric control valve.
The water supply pump 16 is a constant pressure water supply pump and is provided with an overpressure water draining device.
The working principle of the utility model is as follows:
molten salt heat storage mode (valley power period): based on the valley electricity period, through 4 pump sending low temperature molten salt 2 in the fused salt electric heater 1 of fused salt pump, set for fused salt electric heater 1 the target temperature be less than fused salt decomposition temperature about 10 ℃, low temperature fused salt becomes high temperature fused salt through the in-process heat absorption of fused salt electric heater 1 to along with the pipeline gets into fused salt uniform distributor 6, flow back to 3 in the high temperature molten salt jar after that, fused salt uniform distributor 6 ensures that fused salt samming distributes in the high temperature molten salt jar 3.
Molten salt heat supply stage (off-valley period): molten salt in the high-temperature molten salt tank 3 is pumped to the molten salt-steam generator 7 through the high-temperature molten salt pump 5, heat on the molten salt side is exchanged to the water side by utilizing the principle of convective heat transfer of the high-temperature molten salt and low-temperature water, the temperature of the high-temperature molten salt is reduced to be higher than 20 ℃ of the melting point of the high-temperature molten salt in the process of a molten salt pipeline passing through the molten salt-steam generator 7, and the high-temperature molten salt returns to the low-temperature molten salt tank 2 after passing through the molten salt uniform distributor. The low-temperature water passes through the molten salt-steam generator 7 to generate high-temperature steam, and then high-quality thermal service is provided for the end heat user through the sub-cylinder 12.
The combined supply mode of the electric steam boiler-gas steam boiler parallel system (all-weather) is as follows: a. when the tail end is in a low-load requirement, if the heat storage capacity of the molten salt is sufficient, the molten salt charging and discharging integrated mode is entered, and the heat release of the molten salt is carried out while the heat storage of the molten salt is carried out; and if the heat storage amount of the molten salt is insufficient, starting the coupling linkage of the electric steam boiler to supply the tail end steam. b. When the tail end is in a high-load requirement, if the heat storage capacity of the molten salt is sufficient, the molten salt charging and discharging integrated mode is entered, and the heat release of the molten salt is carried out while the heat storage of the molten salt is carried out; if the heat storage amount of the molten salt is insufficient, the gas steam boiler is started to supply the tail end steam in a coupling linkage manner. c. When the load at the tail end fluctuates, the coupling linkage mode of the fused salt double tanks, the electric steam boiler and the gas steam boiler is reasonably regulated and controlled according to the real-time dynamic state of operation, and all-weather steam supply is economically and reasonably carried out.
Examples
The existing 4 gas steam boilers are respectively 1 gas steam boiler with 35 steam tons, 1 gas steam boiler with 45 steam tons and 2 gas steam boiler with 75 steam tons, and the minimum operation load of the boilers is 30 percent, namely 10.5 steam tons, 13.5 steam tons and 22.5 steam tons.
4 months and 10 months are transition periods of a heating season and a cooling season each year, a large number of heat users stop using heat, and only a small number of heat users have heat demand. The maximum steam consumption is about 6 steam tons and the minimum steam consumption is about 2 steam tons per hour; during the transition period, a 35-ton or 45-ton gas boiler is typically used to supply heat to the user. Because the heat production amount is higher than the heat user demand, in order to ensure the stable operation of the gas steam boiler, a part of boiler steam is sent to the large-network steam-water heat exchange station during the transition season to be used as the basic consumption of the boiler, thereby generating huge heat waste.
The operation scheme causes the high-power gas steam boiler to operate for a long time, and the high-power gas steam boiler cannot be maintained, so that considerable potential safety hazards are caused; meanwhile, a large amount of heat is consumed in a heat supply network steam-water heat exchange station in a reactive mode, and huge energy waste is caused.
And a double-tank molten salt system is additionally arranged aiming at the conditions, and the molten salt-steam generator 7 and the gas-steam boiler are connected in parallel to a heat user. The 4MW fused salt electric heater is configured to store heat in valley electricity for a double-tank fused salt system, release heat in all weather and provide thermal service for heat users. Selecting binary inorganic salt (optionally containing NaNO) with decomposition temperature of about 550 deg.C3、KNO3The melting point of the fused salt is about 130 ℃ and is prepared according to the mass percentage of 45:55 of the fused salt of (1); the temperature of the low-temperature molten salt at the outlet end of the molten salt-steam generator 7 is controlled to be more than 150 ℃, the steam temperature is about 180 ℃, and the control is realized by adjusting an electric stop valve on a pipeline.
Therefore, 3400 steam tons can be provided during the transition season (calculated in 35 days), the waste of about 5500 steam tons can be avoided, the energy saving rate reaches 61.8%, and the economic benefit is about 188 ten thousand yuan directly generated according to the steam net income 210 yuan/steam ton accounting; and can still provide 3 steam tons/h steam volume in all weather in the season of non-heating (except for the transition season), the total net income can reach 363 ten thousand yuan in 240 days of season of non-heating; the annual net income can reach 551 ten thousand yuan; because the valley electricity price is more favorable than the gas price, the saving rate of the relative fuel cost reaches 31.7 percent.
The utility model discloses the nothing is mentioned the part and is applicable to prior art.

Claims (5)

1. A double-tank molten salt coupling electric steam boiler and gas steam boiler heat supply system is characterized by comprising a double-tank molten salt system and an electric steam boiler-gas steam boiler parallel system; the double-tank molten salt system comprises a molten salt electric heater, a low-temperature molten salt tank, a high-temperature molten salt tank, a low-temperature molten salt pump, a high-temperature molten salt pump, a molten salt distributor and a molten salt-steam generator, wherein the low-temperature molten salt pump is mounted on a top cover of the low-temperature molten salt tank, the high-temperature molten salt pump is mounted on a top cover of the high-temperature molten salt tank, and the molten salt distributor is mounted inside each of the low-temperature molten salt tank and the high-temperature molten salt tank; the lower part of the low-temperature molten salt pump is positioned in the low-temperature molten salt tank, the upper part of the low-temperature molten salt pump is communicated with the molten salt electric heater through a pipeline, and the molten salt electric heater is communicated with the molten salt uniform distributor in the high-temperature molten salt tank through another pipeline; the lower part of the high-temperature molten salt pump is positioned inside the high-temperature molten salt tank, the upper part of the high-temperature molten salt pump is communicated with a molten salt pipeline of the molten salt-steam generator through a pipeline, and the other end of the molten salt pipeline of the molten salt-steam generator is communicated with a molten salt uniform distributor inside the low-temperature molten salt tank through a pipeline;
a molten salt circulating channel is formed among the low-temperature molten salt tank, the low-temperature molten salt pump, the molten salt electric heater, the molten salt distributor inside the high-temperature molten salt tank, the high-temperature molten salt pump, the molten salt-steam generator, the molten salt distributor inside the low-temperature molten salt tank and the low-temperature molten salt tank;
the electric steam boiler-gas steam boiler parallel system comprises an electric steam boiler, a gas steam boiler, an energy saver, an air preheater, a gas separation cylinder, an air blower, an induced draft fan, a circulating pump, a water feed pump, a deaerator and a resin tank; the water inlet end of the waterway pipeline of the fused salt-steam generator is connected with the water inlet end of the electric steam boiler in parallel, the water outlet end of the waterway pipeline of the fused salt-steam generator is connected with the water outlet end of the electric steam boiler in parallel, and the water outlet ends of the waterway pipeline of the fused salt-steam generator and the water outlet end of the electric steam boiler are combined with the water outlet end of the gas steam boiler through a pipeline and then connected with the branch cylinder; the branch cylinder is communicated with an input pipeline of a heat user through one output pipeline and is connected with a deaerator through the other output pipeline; the tap water output pipeline is communicated with the resin tank, and the resin tank is connected with the deaerator through a pipeline; a water feeding pump is arranged on an output pipeline of the deaerator, and the output pipeline of the water feeding pump is combined with a hot user water return pipeline and then connected into a circulating pump; the output end of the circulating pump is provided with a pipeline connected with the water path input end of the energy saver, and is provided with another pipeline connected with the water inlet end of the water path pipeline of the molten salt-steam generator and the water inlet end of the electric steam boiler;
the water path output end of the energy saver is connected with the water inlet end of the gas steam boiler, a gas path output pipeline arranged on the gas steam boiler is connected with a gas path pipeline of the energy saver, the gas path output pipeline of the energy saver is connected with a heat collecting pipeline of the air preheater, and the heat collecting pipeline output end of the air preheater is connected with a chimney through an induced draft fan; the air input pipeline of the gas steam boiler is provided with an air blower, the output end of the air blower is connected with the input end of the preheating pipeline of the air preheater, and the output end of the preheating pipeline of the air preheater is connected with the air input end of the gas steam boiler.
2. The double-tank molten salt coupling electric steam boiler and gas steam boiler heating system according to claim 1, wherein the molten salt distributor adopts a conical centrifugal spraying technology and is made of high temperature resistant stainless steel with over 304 grades.
3. The double-tank molten salt coupling electric steam boiler and gas steam boiler heating system according to claim 1, wherein the inner walls of the low-temperature molten salt tank and the high-temperature molten salt tank are embedded with high-temperature oxidation corrosion resistant composite membranes.
4. The double-tank molten salt coupling electric steam boiler and gas steam boiler heating system according to claim 1, wherein the high-temperature molten salt pump and the low-temperature molten salt pump are both submerged pumps made of high-temperature-resistant and corrosion-resistant steel.
5. The double-tank molten salt coupling electric steam boiler and gas steam boiler heating system according to claim 1, wherein the water feed pump is a constant-pressure water feed pump and is additionally provided with an overpressure water draining device.
CN202020173668.7U 2020-02-17 2020-02-17 Double-tank fused salt coupling electric steam boiler and gas steam boiler heat supply system Active CN210373373U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484404A (en) * 2021-12-29 2022-05-13 中国华电科工集团有限公司 Energy storage and steam generation system and method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484404A (en) * 2021-12-29 2022-05-13 中国华电科工集团有限公司 Energy storage and steam generation system and method thereof
WO2023123839A1 (en) * 2021-12-29 2023-07-06 中国华电科工集团有限公司 Energy storage and steam generation system and method

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