CN212252556U - Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas - Google Patents
Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas Download PDFInfo
- Publication number
- CN212252556U CN212252556U CN202020518509.6U CN202020518509U CN212252556U CN 212252556 U CN212252556 U CN 212252556U CN 202020518509 U CN202020518509 U CN 202020518509U CN 212252556 U CN212252556 U CN 212252556U
- Authority
- CN
- China
- Prior art keywords
- steam
- superheated
- superheated steam
- waste heat
- heat transfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a waste heat recovery system of regulation and control raw coke oven gas waste heat utilization superheated steam temperature belongs to coke oven waste heat recovery technical field. The utility model discloses a waste heat recovery system, including water supply system, tedge circulation heat transfer system and superheated heat transfer system, water supply system is connected with tedge circulation heat transfer system's water inlet, and the saturated steam export of tedge circulation heat transfer system is connected with superheated heat transfer system through superheated steam admission house steward, is equipped with the connecting tube between the saturated steam header steward of tedge circulation heat transfer system and the superheated steam admission house steward, is equipped with electrical control valve on the connecting tube. The utility model discloses utilize the pressure differential between saturated steam soda house steward and the superheated steam admission house steward to supply the steam mixture for superheated heat transfer system to the temperature descends when making superheated steam temperature exceed the settlement, has guaranteed the stability of superheated steam temperature among the superheated heat transfer system, has avoided the tedge over heater to receive high temperature damage in the superheated heat transfer system.
Description
Technical Field
The utility model relates to a coke oven raw gas waste heat recovery system, more specifically say, relate to a waste heat recovery system of regulation and control raw gas waste heat utilization superheated steam temperature.
Background
The crude gas which comes out of the coke oven carbonization chamber and enters the ascending pipe heat exchanger is about 800 ℃, coking enterprises generally adopt the traditional ammonia water spraying mode for cooling, and a large amount of waste heat resources cannot be utilized.
With the development of waste heat recovery technology, at present, many enterprises adopt the riser heat exchange devices to recover heat, produce low-pressure and medium-pressure saturated steam, and recover the sensible heat of the raw coke oven gas. However, because the saturated steam has the problems of narrow application range and easy condensation into water when cooled, and the like, in order to expand the application range of the steam, secondary heat exchange is often adopted to heat the saturated steam into superheated steam. The sensible heat recovery system for the crude gas in the ascension pipe of the coke oven, as disclosed in the Chinese patent No. ZL201420147327.7, comprises a heat exchange forced circulation system, a water replenishing system and an overheated steam circulation system, wherein the overheated steam circulation system comprises an overheated steam heat exchanger set, one path of a steam outlet of the heat exchange forced circulation system is connected with an external saturated steam pipe network, the other path of the steam outlet of the heat exchange forced circulation system is connected with an inlet of the overheated steam heat exchanger set through a recirculating steam pipe, and an outlet of the overheated steam heat exchanger set is connected with an external overheated steam pipe; the water charging system comprises a buffer water tank, a deoxidizing water pump, a deaerator, a deoxidizing water tank and a water feeding pump, wherein the deoxidizing water pump is arranged between the buffer water tank and the deaerator, and the deoxidizing water tank is connected with the saturated steam drum through the water feeding pump. The patent application can effectively, safely and reliably recover the waste heat of the raw coke oven gas, and cyclically convert the heat exchange medium into medium-pressure steam and low-pressure steam. However, in the process of superheating saturated steam, the number of the superheating ascending pipes is too large due to design reasons, or the steam of the waste heat recovery system fluctuates due to the reasons of periodic change and maintenance of the temperature of the raw coke oven gas, so that the temperature of the superheated steam fluctuates. The superheated steam fluctuates periodically, which not only affects the temperature of the grid-connected steam system and influences the fluctuation of the working conditions of subsequent steam users, but also causes the situation that the temperature of the superheated heat exchanger is too high, and causes damage to the superheated heat exchanger.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defect that the temperature of the superheated steam of the waste heat recovery system of the coke oven crude gas is not easy to control, and provides a waste heat recovery system for regulating and controlling the temperature of the superheated steam used by the waste heat of the crude gas, adopting the technical proposal of the utility model, a connecting pipeline is arranged between a saturated steam main pipe and a superheated steam inlet main pipe of a riser circulating heat exchange system, an electric regulating valve is additionally arranged on the connecting pipeline, when the temperature of the superheated steam generated in the superheated heat exchange system is overhigh, the connecting pipeline can be communicated through the electric regulating valve, and a certain amount of steam mixture is supplemented to the superheated heat exchange system by utilizing the pressure difference between the saturated steam main pipe and the superheated steam inlet main pipe, thereby reducing the temperature of the superheated steam in the superheated heat exchange system, ensuring the stability of the subsequent processes, and the riser superheater in the overheating heat exchange system is prevented from being damaged by high temperature, and the running stability and reliability of the waste heat recovery system are improved.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a waste heat recovery system of regulation and control raw coke oven gas waste heat utilization superheated steam temperature, including water supply system, tedge circulation heat transfer system and superheated heat transfer system, water supply system be connected with tedge circulation heat transfer system's water inlet for carry the desalination deoxidization water among the tedge circulation heat transfer system, the saturated steam export of tedge circulation heat transfer system be connected with superheated heat transfer system through superheated steam admission house steward, be arranged in sending into superheated heat transfer system with the saturated steam that produces among the tedge circulation heat transfer system and heat up into superheated steam, the saturated steam admission house steward and the superheated steam of tedge circulation heat transfer system between be equipped with the connecting tube, the connecting tube on be equipped with electrical control valve.
Furthermore, the electric control valve is in communication connection with the controller, and the controller is in communication connection with a temperature sensor arranged at a main superheated steam outlet of the superheated heat exchange system and used for adjusting the opening and closing of the electric control valve and the flow according to the main superheated steam outlet temperature detected by the temperature sensor.
Furthermore, one end of the connecting pipeline extends into the superheated steam inlet main pipe, and the flow direction of the connecting pipeline in the superheated steam inlet main pipe is consistent with that of the superheated steam inlet main pipe.
Furthermore, the ascending pipe circulating heat exchange system comprises a steam drum, a forced circulation pump, an ascending pipe heat exchanger and a steam distributing cylinder, wherein the steam drum is connected with a water supply system, the ascending pipe heat exchanger and the steam drum are connected through the forced circulation pump to form a circulating loop, the ascending pipe heat exchanger is connected to the steam drum through a saturated steam main pipe, the steam drum is connected to the steam distributing cylinder, and the steam distributing cylinder is connected to the overheating heat exchange system through an overheating steam inlet main pipe.
Furthermore, the superheating heat exchange system comprises a riser superheater, the branch cylinder is connected to the riser superheater through a superheated steam inlet main pipe, and a superheated steam main outlet of the riser superheater is connected to a user steam pipe network.
Furthermore, the water supply system comprises a buffer water tank, an oxygen removal pump, a deaerator and a water supply pump, wherein a water inlet of the buffer water tank is connected with demineralized water, a water outlet of the buffer water tank is connected to the deaerator through the deaerator, and the deaerator is connected to the steam pocket through the water supply pump.
Furthermore, one branch of the branch cylinder is connected to the deaerator through a pipeline.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:
(1) the utility model relates to a waste heat recovery system for regulating and controlling the temperature of superheated steam for utilizing waste heat of raw coke oven gas, a connecting pipeline is arranged between a saturated steam main pipe and a superheated steam inlet main pipe of a circulating heat exchange system of the ascending pipe, an electric regulating valve is additionally arranged on the connecting pipeline, when the temperature of the superheated steam generated in the superheated heat exchange system is overhigh, can be communicated with a connecting pipeline through an electric regulating valve, a certain amount of water-vapor mixture is supplemented to the superheated heat exchange system by utilizing the pressure difference between the saturated steam-water main pipe and the superheated steam inlet main pipe, thereby reducing the temperature of the superheated steam in the superheated heat exchange system, ensuring the stability of subsequent processes and the stability of a steam pipe network system, the riser superheater in the overheating heat exchange system is prevented from being damaged by high temperature, and the running stability and reliability of the waste heat recovery system are improved; the pressure difference is utilized to supplement the water-vapor mixture to the overheating heat exchange system, so that the steam yield of the overheating steam is further improved; meanwhile, the pipeline design is simple, and the low-cost transformation of the existing raw gas waste heat recovery system is facilitated;
(2) the utility model discloses a waste heat recovery system of regulation and control raw coke oven gas waste heat utilization superheated steam temperature, its electrical control valve and controller communication connection, the controller with locate the temperature sensor communication connection in the superheated steam total exit of superheated heat transfer system for the switching and the flow size of the total export temperature of superheated steam that detects according to temperature sensor adjustment electrical control valve, the automatic adjustment of electrical control valve is controlled according to the total export temperature of superheated steam, when the total export temperature of superheated steam exceeds the setting value, the governing valve position is opened, increase steam-water mixture, make the temperature descend; when the temperature is reduced and is lower than the set temperature, the valve position of the regulating valve is closed, the steam-water mixture is reduced, and the temperature is raised again, so that the aim of stabilizing the temperature of the superheater of the riser is fulfilled; the temperature of the superheated steam is accurately controlled and is convenient to control;
(3) the utility model discloses a waste heat recovery system of raw coke oven gas waste heat utilization superheated steam temperature of regulation and control, its one end of connecting tube stretches into the superheated steam admission main, and the flow direction of connecting tube in the superheated steam admission main is unanimous with the flow direction of superheated steam admission main, makes the benefit effect of steam-water mixture better;
(4) the utility model discloses a waste heat recovery system of regulation and control raw coke oven gas waste heat utilization superheated steam temperature, its tedge circulation heat transfer system include the steam pocket, force circulation pump, tedge heat exchanger and branch cylinder, and superheated heat transfer system includes the tedge over heater, utilizes the saturated steam soda house steward of tedge circulation heat transfer system and the connecting tube design between the superheated steam admission house steward, has made things convenient for the nimble selection of quantity of tedge over heater, has improved waste heat recovery system's application flexibility and practicality.
Drawings
Fig. 1 is a schematic diagram of the waste heat recovery system for regulating and controlling the temperature of the superheated steam for utilizing the waste heat of the raw gas.
The reference numerals in the schematic drawings illustrate:
1. a buffer water tank; 2. an oxygen removal pump; 3. a deaerator; 4. a feed pump; 5. a steam drum; 6. a forced circulation pump; 7. a riser heat exchanger; 8. a cylinder is divided; 9. a riser superheater; 10. a saturated steam main; 11. a superheated steam inlet manifold; 12. connecting a pipeline; 13. an electric control valve.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Examples
As shown in fig. 1, the waste heat recovery system for regulating and controlling the temperature of superheated steam used by waste heat of raw coke oven gas of the embodiment comprises a water supply system, an ascending tube circulating heat exchange system and a superheated heat exchange system, wherein the water supply system is connected with a water inlet of the ascending tube circulating heat exchange system and is used for conveying desalted and deaerated water to the ascending tube circulating heat exchange system, a saturated steam outlet of the ascending tube circulating heat exchange system is connected with the superheated heat exchange system through a superheated steam inlet main pipe 11 and is used for conveying saturated steam generated in the ascending tube circulating heat exchange system into the superheated heat exchange system to be heated into superheated steam, a connecting pipe 12 is arranged between a saturated steam main pipe 10 and a superheated steam inlet main pipe 11 of the ascending tube circulating heat exchange system, and an electric regulating valve 13 is arranged on the. The saturated steam-water main pipe 10 is internally provided with a steam-water mixture, the pressure in the saturated steam-water main pipe 10 is greater than that in the superheated steam intake main pipe 11, and a certain amount of steam-water mixture is supplemented to the superheated heat exchange system by utilizing the pressure difference between the saturated steam-water main pipe 10 and the superheated steam intake main pipe 11, so that the temperature of superheated steam in the superheated heat exchange system is reduced, the temperature stability of the superheated steam in the superheated heat exchange system is ensured, the stability of subsequent processes and the stability of a steam pipe network system are ensured, the damage of a riser superheater in the superheated heat exchange system due to high temperature is avoided, and the stability and the reliability of the operation of the waste heat recovery system; the pressure difference is utilized to supplement the water-vapor mixture to the overheating heat exchange system, so that the steam yield of the overheating steam is further improved; meanwhile, the pipeline design is simple, and the low-cost transformation of the existing raw gas waste heat recovery system is facilitated.
In this embodiment, the electric control valve 13 is in communication connection with a controller, the controller is in communication connection with a temperature sensor arranged at a main superheated steam outlet of the superheated heat exchange system, and is configured to adjust the opening and closing and the flow of the electric control valve 13 according to the main superheated steam outlet temperature detected by the temperature sensor, and control the automatic adjustment of the electric control valve 13 according to the main superheated steam outlet temperature; when the temperature is reduced and is lower than the set temperature, the valve position of the regulating valve is closed, the steam-water mixture is reduced, and the temperature is raised again, so that the aim of stabilizing the temperature of the superheater of the riser is fulfilled; the temperature of the superheated steam is accurately controlled and is convenient to control. Furthermore, one end of the connecting pipe 12 extends into the superheated steam inlet main pipe 11, and the flow direction of the connecting pipe 12 in the superheated steam inlet main pipe 11 is consistent with the flow direction of the superheated steam inlet main pipe 11, so that the supplementing effect of the steam-water mixture is better.
As shown in fig. 1, in this embodiment, the ascending tube circulating heat exchange system includes a steam drum 5, a forced circulation pump 6, ascending tube heat exchangers 7 and a steam-distributing cylinder 8, the steam drum 5 is connected to a water supply system, the water supply system supplies desalted and deaerated water to the steam drum 5, the ascending tube heat exchangers 7 are connected to the steam drum 5 through the forced circulation pump 6 to form a circulation loop, so that the desalted and deaerated water circularly flows and rises in the ascending tube heat exchangers 7 to form saturated steam, a plurality of the ascending tube heat exchangers 7 are converged into a saturated steam-water main pipe 10, the ascending tube heat exchangers 7 are connected to the steam drum 5 through the saturated steam-water main pipe 10, a steam outlet of the steam drum 5 is connected to the steam-distributing cylinder 8, and the steam-distributing cylinder 8 is connected. The superheated heat exchange system comprises an ascending pipe superheater 9, the steam distributing cylinder 8 is connected to the ascending pipe superheater 9 through a superheated steam inlet main pipe 11, and a superheated steam main outlet of the ascending pipe superheater 9 is connected to a user steam pipe network. The water supply system comprises a buffer water tank 1, a deoxygenation pump 2, a deoxygenator 3 and a water supply pump 4, wherein a water inlet of the buffer water tank 1 is connected with demineralized water, a water outlet of the buffer water tank 1 is connected to the deoxygenator 3 through the deoxygenation pump 2, and the deoxygenator 3 is connected to a steam pocket 5 through the water supply pump 4; one branch of the gas distributing cylinder 8 is connected to the deaerator 3 through a pipeline. By utilizing the design of a connecting pipeline between a saturated steam main pipe 10 and an overheated steam main pipe 11 of the ascending pipe circulating heat exchange system, the pressure difference between the saturated steam main pipe 10 and the overheated steam main pipe 11 is the sum of the resistance of a saturated steam return pipe steam return drum and the resistance of a steam drum steam main pipe to the overheated ascending pipe, so that the flexible selection of the number of the ascending pipe overheaters is facilitated, and the application flexibility and the practicability of the waste heat recovery system are improved. Preferably, the connecting duct 12 is located as close as possible to the riser superheater 9, avoiding heat losses.
The utility model relates to a waste heat recovery system for regulating and controlling the temperature of superheated steam for utilizing waste heat of raw coke oven gas, a connecting pipeline is arranged between a saturated steam-water main pipe and a superheated steam inlet main pipe of the ascending pipe circulating heat exchange system, an electric regulating valve is additionally arranged on the connecting pipeline, when the temperature of the superheated steam generated in the superheated heat exchange system is overhigh, can be communicated with a connecting pipeline through an electric regulating valve, a certain amount of water-vapor mixture is supplemented to the superheated heat exchange system by utilizing the pressure difference between the saturated steam-water main pipe and the superheated steam inlet main pipe, thereby reducing the temperature of the superheated steam in the superheated heat exchange system, ensuring the stability of subsequent processes and the stability of a steam pipe network system, and the riser superheater in the overheating heat exchange system is prevented from being damaged by high temperature, and the running stability and reliability of the waste heat recovery system are improved. And the scheme has the advantages of simple site operation and less increase of pipelines and equipment, and is convenient for low-cost transformation of the existing raw coke oven gas waste heat recovery system.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides a waste heat recovery system of regulation and control raw coke oven gas waste heat utilization superheated steam temperature, includes water supply system, tedge circulation heat transfer system and superheated heat transfer system, water supply system be connected with tedge circulation heat transfer system's water inlet for carry the desalination deoxidization water among the tedge circulation heat transfer system, tedge circulation heat transfer system's saturated steam export be connected with superheated heat transfer system through superheated steam admission house steward (11), be arranged in sending into superheated heat transfer system with the saturated steam that produces among the tedge circulation heat transfer system and heat up into superheated steam, its characterized in that: a connecting pipeline (12) is arranged between a saturated steam main pipe (10) and a superheated steam inlet main pipe (11) of the ascending pipe circulating heat exchange system, and an electric regulating valve (13) is arranged on the connecting pipeline (12).
2. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 1, is characterized in that: the electric control valve (13) is in communication connection with the controller, the controller is in communication connection with a temperature sensor arranged at a superheated steam main outlet of the superheated heat exchange system, and the controller is used for adjusting the opening and closing of the electric control valve (13) and the flow according to the temperature of the superheated steam main outlet detected by the temperature sensor.
3. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 2, is characterized in that: one end of the connecting pipeline (12) extends into the superheated steam inlet main pipe (11), and the flow direction of the connecting pipeline (12) in the superheated steam inlet main pipe (11) is consistent with the flow direction of the superheated steam inlet main pipe (11).
4. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 1, 2 or 3, wherein: the ascending pipe circulating heat exchange system comprises a steam drum (5), a forced circulation pump (6), an ascending pipe heat exchanger (7) and a steam distributing cylinder (8), wherein the steam drum (5) is connected with a water supply system, the ascending pipe heat exchanger (7) is connected with the steam drum (5) through the forced circulation pump (6) to form a circulating loop, the ascending pipe heat exchanger (7) is connected to the steam drum (5) through a saturated steam-water main pipe (10), the steam drum (5) is connected to the steam distributing cylinder (8), and the steam distributing cylinder (8) is connected to the overheating heat exchange system through an overheated steam inlet main pipe (11).
5. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 4, is characterized in that: the superheated heat exchange system comprises a riser superheater (9), the steam distributing cylinder (8) is connected to the riser superheater (9) through a superheated steam inlet main pipe (11), and a superheated steam main outlet of the riser superheater (9) is connected to a user steam pipe network.
6. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 5, is characterized in that: the water supply system include buffer tank (1), deoxidization pump (2), oxygen-eliminating device (3) and feed water pump (4), the water inlet of buffer tank (1) be connected with the demineralized water, the delivery port of buffer tank (1) be connected to oxygen-eliminating device (3) through oxygen-eliminating pump (2), oxygen-eliminating device (3) be connected to steam pocket (5) through feed water pump (4).
7. The waste heat recovery system for regulating and controlling the temperature of the superheated steam for waste heat utilization of the raw coke oven gas as claimed in claim 6, is characterized in that: one branch of the air distributing cylinder (8) is connected into the deaerator (3) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020518509.6U CN212252556U (en) | 2020-04-10 | 2020-04-10 | Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020518509.6U CN212252556U (en) | 2020-04-10 | 2020-04-10 | Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212252556U true CN212252556U (en) | 2020-12-29 |
Family
ID=73984303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020518509.6U Active CN212252556U (en) | 2020-04-10 | 2020-04-10 | Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212252556U (en) |
-
2020
- 2020-04-10 CN CN202020518509.6U patent/CN212252556U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020181675A1 (en) | Flexible coal-fired power generation system, and operation method therefor | |
| CN101806230B (en) | System and method for using sintering waste heat to generate electricity | |
| CN108302946B (en) | Flue gas waste heat recycling device based on organic Rankine cycle and control system | |
| WO2020181677A1 (en) | Flexible hybrid solar/coal-fired power generation system and operation method | |
| CN103452600A (en) | Steam turbine generating system with indirect regulation on regenerative side and primary frequency regulating method | |
| CN201436467U (en) | Natural circulation structure of dry quenched coke boiler economizer | |
| WO2015149572A1 (en) | Energy-conserving boiler | |
| CN212252556U (en) | Waste heat recovery system for regulating and controlling temperature of superheated steam for waste heat utilization of raw gas | |
| CN203718744U (en) | Flue gas waste heat recovery exhaust gas temperature control system | |
| CN206538377U (en) | Coke oven coke oven uprising tube raw coke oven gas waste heat recovery co-generation unit | |
| CN111878802A (en) | Heat utilization system of slag cooler and low-temperature economizer of circulating fluidized bed heat supply unit | |
| CN101706222B (en) | Transformation heat accumulator system | |
| CN206145660U (en) | Hydrophobic water level regulating system of heating network heater | |
| CN102865572A (en) | Flue gas recirculating temperature-regulation system of novel double reheating power station boiler | |
| CN203499733U (en) | Steam turbine power generation system adopting regeneration-side indirect regulation | |
| CN203258631U (en) | Medium-temperature medium-pressure dual-pressure heat recovery boiler with self-deoxygenizing system | |
| CN206319918U (en) | Combined-cycle power plant's carbonated drink backheat and residual heat integrative, which are utilized, puies forward effect system | |
| CN205481240U (en) | Novel series connection heat supply network drainage system | |
| CN211424362U (en) | Deaerator preheating system capable of improving steam output supplied from back pressure unit | |
| CN105423398B (en) | One kind series connection heat supply network draining system | |
| CN206973512U (en) | A kind of spent acid cracking waste heat recovery system | |
| CN112768101A (en) | System and method for starting nuclear power unit of high-temperature gas cooled reactor by sliding pressure | |
| CN202092115U (en) | System for improving pressure of desuperheating water of superheater | |
| CN203656895U (en) | Device for preventing low temperature corrosion on coal economizer heating surfaces | |
| CN208473941U (en) | A kind of heat supply cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |