Cooling system for high-pressure burner of gasification furnace

Abstract

The utility model relates to a cooling system for a high-pressure burner of a gasification furnace, and belongs to the cooling technology of the burner of the gasification furnace. The high-pressure burner nozzle cooling system of the gasification furnace comprises a storage unit, a burner nozzle cooling unit, a detection unit and a heat recovery unit, the storage unit comprises a cooling water buffer tank, the burner nozzle cooling unit comprises the gasification furnace and a gasification furnace burner nozzle on the outer wall of the gasification furnace, the detection unit comprises a separator and a detection device, and the heat recovery unit is connected with the separator. The heat recovery unit comprises a low-pressure steam generator. The system further comprises a pump. The cooling water buffer tank is provided with the pressurizing port and the pressure relief port, and the cooling water buffer tank and the whole high-pressure burner cooling system of the gasification furnace are set as a high-pressure system, so that when a pump or other devices are damaged and suddenly stopped, circulating cooling water in the system can return to the cooling water buffer tank according to the gravity of the circulating cooling water; and therefore, the burner is continuously cooled.

Description

Technical Field

[0001] The utility model relates to a gasification furnace burner cooling technology, in particular to a gasification furnace high-pressure burner cooling system. Background Art

[0002] The temperature of the combustion chamber of a coal gasifier is generally over a thousand degrees. The burner of the gasifier will be subjected to extremely high temperatures during the operation of the gasifier. In such a high temperature environment, the metal material of the burner head will heat up rapidly and be damaged. In order to extend the life of the burner, a cooling coil is generally installed outside the burner to protect and extend the service life of the burner by circulating cooling water.

[0003] For example, patent CN107090314B discloses a cooling method and cooling system for a gasification burner, which includes: a gasification burner, a cooling water tank, a pressure pump and a heat exchanger; the gasification burner includes a burner body; the burner body includes a burner base and a base shell, the base shell is covered on the outside of the burner base, and a cooling channel is formed between the burner base and the base shell; the gasification burner also includes a cooling water jacket, which is covered on the outside of the burner body; the cooling water jacket is connected to the cooling water tank, the pressure pump and the heat exchanger in sequence, and the cooling water outlet of the heat exchanger is connected to the cooling water jacket.

[0004] CN216005771U discloses a cooling water system for a process burner of a gasifier, comprising a process burner and a circulating cooling system. The head of the process burner is provided with a cooling section, the water inlet and outlet of which are both connected to the circulating cooling system; and the system also includes: an online analysis device for online detection and analysis of CO content.

[0005] The traditional burner cooling system is generally a combination of the above-mentioned cooling water tank, heat exchanger and detector. The devices in the system are all connected to the atmosphere and are normal pressure systems. In addition, a pump is often required to provide power for the fluid during the cooling water circulation process. If the cooling water pan is damaged during the burner cooling process, the cooling water in the system will overflow.

[0006] In summary, in the traditional gasifier burner cooling process, it is often necessary to circulate cooling water through the cooling water pan to cool the gasifier burner. However, the traditional system is often a normal pressure system. When the system is damaged or stopped suddenly, the circulating cooling water in the system cannot flow back, which is still a problem that needs to be solved urgently. Utility Model Content

[0007] In response to the above problems, the utility model provides a gasifier high-pressure burner cooling system. By setting up a high-pressure system, when the pump or other device is damaged or stopped suddenly, the circulating cooling water in the system can return to the cooling water buffer tank according to its own gravity.

[0008] The utility model provides a gasification furnace high-pressure burner cooling system. According to the flow direction of circulating cooling water, the system includes a storage unit, a burner cooling unit, a detection unit and a heat recovery unit;

[0009] The storage unit includes a cooling water buffer tank;

[0010] The burner cooling unit includes a gasifier and a gasifier burner on the outer wall of the gasifier;

[0011] The detection unit includes a separator and a detection device;

[0012] The heat recovery unit includes a low-pressure steam generator;

[0013] The cooling water buffer tank is located directly below or obliquely below the low-pressure steam generator, and the low-pressure steam generator is located directly below or obliquely below the separator;

[0014] The cooling water buffer tank is provided with a pressure charging port, a pressure relief port, a water inlet and a water outlet;

[0015] The outer wall of the gasifier burner is provided with a cooling coil and a cooling water jacket;

[0016] The low-pressure steam generator is provided with a circulating cooling water inlet, a circulating cooling water outlet, a low-temperature boiler water inlet and a steam outlet. The circulating cooling water inlet of the low-pressure steam generator is connected to the water outlet of the separator through a pipeline, and the circulating cooling water outlet of the low-pressure steam generator is connected to the water inlet of the cooling water buffer tank through a pipeline.

[0017] Furthermore, the pressure charging port and the pressure relief port of the cooling water buffer tank are located above the cooling water buffer tank, and the water inlet and the water outlet of the cooling water buffer tank are located below the cooling water buffer tank.

[0018] Furthermore, high-pressure gas is passed through the pressure charging port and the pressure relief port of the cooling water buffer tank, and circulating cooling water is passed through the water inlet and the water outlet of the cooling water buffer tank, and the circulating cooling water is medium-pressure and high-temperature boiler water.

[0019] Furthermore, the number of the gasifiers is greater than or equal to 1. When the number of the gasifiers is 2, the gasifiers include a first gasifier and a second gasifier.

[0020] Furthermore, each of the gasifiers has four gasifier burners. When the number of the gasifier burners is four, the gasifier burners are located in the front, rear, left, and right directions of the gasifier.

[0021] Furthermore, the cooling coil is provided with a water inlet and a water outlet, and the water inlet of the cooling coil is connected to the water outlet of the cooling water buffer tank through a pipeline.

[0022] Furthermore, a pump is provided between a pipe connecting the water outlet of the cooling water buffer tank and the water inlet of the cooling coil.

[0023] Furthermore, the cooling water jacket is located inside the cooling coil.

[0024] Furthermore, the separator is provided with a water inlet, a water outlet and a gas outlet.

[0025] Furthermore, the water inlet of the separator is connected to the water outlet of the cooling coil through a pipeline.

[0026] Furthermore, the number of the separators is consistent with the number of the gasifiers, and all cooling coils of the gasifier burner on one gasifier are connected to a corresponding separator.

[0027] Furthermore, the detection device is arranged at the gas outlet of the separator to detect the gas composition at the gas outlet of the separator.

[0028] Further, when the number of the separator and the number of the detection device are both 1, the separator includes a first separator, and the detection device includes a first detection device.

[0029] Furthermore, when the number of the separators and the number of the detection devices are both 2, the separator further includes a second separator, and the detection device further includes a second detection device.

[0030] Furthermore, low-temperature and low-pressure boiler water is passed through the low-temperature boiler water inlet of the low-pressure steam generator. The low-pressure steam generator absorbs heat from the circulating cooling water and then heats the low-temperature and low-pressure boiler water with the absorbed heat. The heated steam is evaporated from the steam outlet of the low-pressure steam generator for reuse.

[0031] Furthermore, valves are installed on the pipes in the system; and detection instruments are installed on the pipes connecting the pump and the water inlet of the cooling coil for detecting the temperature, pressure and flow of the circulating cooling water.

[0032] Beneficial effects of the utility model:

[0033] 1. The traditional gasifier burner cooling system is a normal pressure system. When the cooling coil in the system is damaged, the circulating cooling water in the system cannot flow back, leakage occurs, and the gasifier burner cannot be cooled. The utility model sets a pressure charging port and a pressure relief port on the cooling water buffer tank, and sets the cooling water buffer tank and the entire gasifier high-pressure burner cooling system as a low-pressure system. When the pump or other device is damaged or stopped suddenly, high-pressure gas is introduced into the pressure charging port of the cooling water buffer tank, so that the circulating cooling water in the cooling water buffer tank continues to be cooled under the action of the high-pressure gas. The burner of the gasifier is cooled. At this time, the circulating cooling water passes through the low-pressure steam generator for heat exchange and then enters the ditch from the circulating cooling water outlet of the low-pressure steam generator. At the same time, the circulating cooling water in the utility model can be set according to the position of the separator, low-pressure steam generator and cooling water buffer tank, so that the circulating cooling water uses its own gravity to return to the cooling water buffer tank, thereby achieving the effect of energy saving and improving productivity. At the same time, the utility model also introduces a low-pressure steam generator to recover the heat in the system and then utilize it, which further improves the environmental protection performance and energy-saving effect of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the structure of the high-pressure burner cooling system of the gasifier in Example 1;

[0035] Figure 2 Schematic diagram of the structure of the high-pressure burner cooling system of the gasifier in Example 2;

[0036] Figure 3 It is a partial enlarged view of a in this embodiment 1;

[0037] The names of the numbers in the figure are: 1. Cooling water buffer tank; 2. Pump; 301. First gasifier; 401. Second gasifier; 501. First separator; 502. Second separator; 601. First detection device; 602. Second detection device; 7. Low-pressure steam generator; A. Storage unit; B. Burner cooling unit; C. Detection unit; D. Heat recovery unit. DETAILED DESCRIPTION

[0038] The utility model is described in detail below with reference to the embodiments:

[0039] The utility model provides a gasification furnace high-pressure burner cooling system, which solves the defect that the cooling coil of the burner cannot continue to cool when it is damaged through a simple gravity system and a low-pressure device, and recovers the heat in the system, greatly improving its environmental protection characteristics.

[0040] Example 1

[0041] The utility model provides a gasification furnace high-pressure burner cooling system. According to the flow direction of circulating cooling water, the system includes a storage unit A, a burner cooling unit B, a detection unit C and a heat recovery unit D;

[0042] The storage unit A includes a cooling water buffer tank 1;

[0043] The burner cooling unit B includes a gasifier and a gasifier burner on the outer wall of the gasifier;

[0044] The detection unit C includes a separator and a detection device;

[0045] The heat recovery unit D includes a low-pressure steam generator 7;

[0046] The cooling water buffer tank 1 is located directly below or obliquely below the low-pressure steam generator 7, and the low-pressure steam generator 7 is located directly below or obliquely below the separator;

[0047] The cooling water buffer tank 1 is provided with a pressure charging port, a pressure relief port, a water inlet and a water outlet;

[0048] The outer wall of the gasifier burner is provided with a cooling coil and a cooling water jacket;

[0049] The low-pressure steam generator 7 is provided with a circulating cooling water inlet, a circulating cooling water outlet, a low-temperature boiler water inlet and a steam outlet. The circulating cooling water inlet of the low-pressure steam generator 7 is connected to the water outlet of the separator through a pipeline, and the circulating cooling water outlet of the low-pressure steam generator 7 is connected to the water inlet of the cooling water buffer tank through a pipeline.

[0050] In this embodiment, the pressure charging port and the pressure relief port of the cooling water buffer tank 1 are located above the cooling water buffer tank 1, and the water inlet and the water outlet of the cooling water buffer tank 1 are located below the cooling water buffer tank 1; the pressure charging port and the pressure relief port of the cooling water buffer tank 1 are connected to high-pressure gas, and the water inlet and the water outlet of the cooling water buffer tank 1 are connected to circulating cooling water, and the circulating cooling water is medium-pressure high-temperature boiler water;

[0051] The number of the gasifiers is greater than or equal to 1. When the number of the gasifiers is 1, the gasifier includes a first gasifier 301.

[0052] The number of gasifier burners of each gasifier is 4. When the number of gasifier burners is 4, the gasifier burners are located in the front, rear, left and right directions of the gasifier;

[0053] The cooling coil is provided with a water inlet and a water outlet, and the water inlet of the cooling coil is connected to the water outlet of the cooling water buffer tank 1 through a pipeline;

[0054] A pump 2 is provided between the pipe connecting the water outlet of the cooling water buffer tank 1 and the water inlet of the cooling coil; the cooling water jacket is located inside the cooling coil;

[0055] The separator is provided with a water inlet, a water outlet and a gas outlet; the water inlet of the separator is connected to the water outlet of the cooling coil through a pipeline; the number of the separators is consistent with the number of the gasifiers, and all the cooling coils of the gasifier burner on one gasifier are connected to a corresponding separator;

[0056] The detection device is arranged at the gas outlet of the separator to detect the gas composition at the gas outlet of the separator;

[0057] The number of the separator and the number of the detection device are both 1, the separator includes a first separator 501, and the detection device includes a first detection device 601;

[0058] The low-temperature boiler water inlet of the low-pressure steam generator 7 is supplied with low-temperature and low-pressure boiler water. The low-pressure steam generator 7 absorbs heat from the circulating cooling water and heats the low-temperature and low-pressure boiler water with the absorbed heat. The heated steam is evaporated from the steam outlet of the low-pressure steam generator 7 for reuse.

[0059] Valves are installed on the pipes in the system; detection instruments are installed on the pipes connecting the pump 2 and the water inlet of the cooling coil for detecting the temperature, pressure and flow of the circulating cooling water.

[0060] Example 2

[0061] The utility model provides a gasification furnace high-pressure burner cooling system. According to the flow direction of circulating cooling water, the system includes a storage unit A, a burner cooling unit B, a detection unit C and a heat recovery unit D;

[0062] The storage unit A includes a cooling water buffer tank 1;

[0063] The burner cooling unit B includes a gasifier and a gasifier burner on the outer wall of the gasifier;

[0064] The detection unit C includes a separator and a detection device;

[0065] The heat recovery unit D includes a low-pressure steam generator 7;

[0066] The cooling water buffer tank 1 is located directly below or obliquely below the low-pressure steam generator 7, and the low-pressure steam generator 7 is located directly below or obliquely below the separator;

[0067] The cooling water buffer tank 1 is provided with a pressure charging port, a pressure relief port, a water inlet and a water outlet;

[0068] The outer wall of the gasifier burner is provided with a cooling coil and a cooling water jacket;

[0069] The low-pressure steam generator 7 is provided with a circulating cooling water inlet, a circulating cooling water outlet, a low-temperature boiler water inlet and a steam outlet. The circulating cooling water inlet of the low-pressure steam generator 7 is connected to the water outlet of the separator through a pipeline, and the circulating cooling water outlet of the low-pressure steam generator 7 is connected to the water inlet of the cooling water buffer tank through a pipeline.

[0070] In this embodiment, the pressure charging port and the pressure relief port of the cooling water buffer tank 1 are located above the cooling water buffer tank 1, and the water inlet and the water outlet of the cooling water buffer tank 1 are located below the cooling water buffer tank 1; the pressure charging port and the pressure relief port of the cooling water buffer tank 1 are connected to high-pressure gas, and the water inlet and the water outlet of the cooling water buffer tank 1 are connected to circulating cooling water, and the circulating cooling water is medium-pressure high-temperature boiler water;

[0071] The number of the gasifiers is 2, and the gasifiers include a first gasifier 301 and a second gasifier 401;

[0072] The number of gasifier burners of each gasifier is 4. When the number of gasifier burners is 4, the gasifier burners are located in the front, rear, left and right directions of the gasifier;

[0073] The cooling coil is provided with a water inlet and a water outlet, and the water inlet of the cooling coil is connected to the water outlet of the cooling water buffer tank 1 through a pipeline;

[0074] A pump 2 is provided between the pipe connecting the water outlet of the cooling water buffer tank 1 and the water inlet of the cooling coil; the cooling water jacket is located inside the cooling coil;

[0075] The separator is provided with a water inlet, a water outlet and a gas outlet; the water inlet of the separator is connected to the water outlet of the cooling coil through a pipeline; the number of the separators is consistent with the number of the gasifiers, and all the cooling coils of the gasifier burner on one gasifier are connected to a corresponding separator;

[0076] The detection device is arranged at the gas outlet of the separator to detect the gas composition at the gas outlet of the separator;

[0077] The number of the separators and the detection devices are both 2, the separators include a first separator 501 and a second separator 502, and the detection devices include a first detection device 601 and a second detection device 602;

[0078] The low-temperature boiler water inlet of the low-pressure steam generator 7 is supplied with low-temperature and low-pressure boiler water. The low-pressure steam generator 7 absorbs heat from the circulating cooling water and heats the low-temperature and low-pressure boiler water with the absorbed heat. The heated steam is evaporated from the steam outlet of the low-pressure steam generator 7 for reuse.

[0079] Valves are installed on the pipes in the system; detection instruments are installed on the pipes connecting the pump 2 and the water inlet of the cooling coil for detecting the temperature, pressure and flow of the circulating cooling water.

[0080] Based on the above, it can be seen that the gasification furnace high-pressure burner cooling system of the utility model has a wide range of applications, low cost, and extremely high market prospects.

[0081] The above description is merely a preferred embodiment of the present invention and does not constitute any other limitation to the present invention. Any modification or equivalent variation based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. A gasifier high pressure burner cooling system, characterized in that: According to the flow direction of the circulating cooling water, the system includes a storage unit (A), a burner cooling unit (B), a detection unit (C) and a heat recovery unit (D); The storage unit (A) comprises a cooling water buffer tank (1); The burner cooling unit (B) includes a gasifier and a gasifier burner on the outer wall of the gasifier; The detection unit (C) includes a separator and a detection device; The heat recovery unit (D) includes a low-pressure steam generator (7); The cooling water buffer tank (1) is located directly below or obliquely below the low-pressure steam generator (7), and the low-pressure steam generator (7) is located directly below or obliquely below the separator; The cooling water buffer tank (1) is provided with a pressure charging port, a pressure relief port, a water inlet and a water outlet; The outer wall of the gasifier burner is provided with a cooling coil and a cooling water jacket; The low-pressure steam generator (7) is provided with a cooling water inlet, a cooling water outlet, a low-temperature boiler water inlet and a steam outlet. The cooling water inlet of the low-pressure steam generator (7) is connected to the water outlet of the separator through a pipeline, and the cooling water outlet of the low-pressure steam generator (7) is connected to the water inlet of the cooling water buffer tank through a pipeline.

2. The gasifier high pressure burner cooling system according to claim 1, characterized in that: The pressure charging port and the pressure relief port of the cooling water buffer tank (1) are located above the cooling water buffer tank (1), and the water inlet and the water outlet of the cooling water buffer tank (1) are located below the cooling water buffer tank (1).

3. The gasifier high pressure burner cooling system according to claim 1, characterized in that: The number of the gasifiers is greater than or equal to 1. When the number of the gasifiers is 2, the gasifiers include a first gasifier (301) and a second gasifier (401).

4. The gasifier high pressure burner cooling system according to claim 1, characterized in that: The number of gasifier burners of each gasifier is 4. When the number of the gasifier burners is 4, the gasifier burners are located in the front, rear, left and right directions of the gasifier.

5. The gasification furnace high pressure burner cooling system according to claim 1, characterized in that: A pump (2) is provided between a pipe connecting the water outlet of the cooling water buffer tank (1) and the water inlet of the cooling coil.

6. The gasifier high pressure burner cooling system according to claim 1, characterized in that: The cooling water jacket is located inside the cooling coil.

7. The gasification furnace high pressure burner cooling system according to claim 1, characterized in that: The separator is provided with a water inlet, a water outlet and a gas outlet.

8. The gasifier high pressure burner cooling system according to claim 1, characterized in that: The number of the separators is consistent with the number of the gasifiers, and all the cooling coils of the gasifier burners on one gasifier are connected to a corresponding separator.

9. The gasification furnace high pressure burner cooling system according to claim 1, characterized in that: The detection device is arranged at the gas outlet of the separator to detect the gas composition at the gas outlet of the separator.

10. The gasification furnace high pressure burner cooling system according to claim 1, characterized in that: The low-temperature boiler water inlet of the low-pressure steam generator (7) is supplied with low-temperature low-pressure boiler water. The low-pressure steam generator (7) absorbs heat from the circulating cooling water and heats the low-temperature low-pressure boiler water with the absorbed heat. The heated steam is evaporated from the steam outlet of the low-pressure steam generator (7) for reuse.

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