CN215112717U - Light hydrocarbon gasification safe start protection system - Google Patents
Light hydrocarbon gasification safe start protection system Download PDFInfo
- Publication number
- CN215112717U CN215112717U CN202022803240.9U CN202022803240U CN215112717U CN 215112717 U CN215112717 U CN 215112717U CN 202022803240 U CN202022803240 U CN 202022803240U CN 215112717 U CN215112717 U CN 215112717U
- Authority
- CN
- China
- Prior art keywords
- gasification
- subsystem
- gas
- air
- safety
- 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 relates to the technical field of gasification systems, in particular to a light hydrocarbon gasification safe start protection system, which comprises a safety protection system, wherein the safety protection system comprises a waste heat flue gas preheating and air supply subsystem, an oil supply regulating subsystem, an oil atomization air subsystem, a composite gas making subsystem, a gasified fuel gas and residual liquid light hydrocarbon oil circulating subsystem, a safe pressure relief and bleeding subsystem, a safety control and alarm interlocking protection and anti-static explosion protection subsystem; the beneficial effects are that: the utility model provides a light hydrocarbon gasification safety start protection pipe-line system mainly is in order to prevent that the potential safety hazard that probably exists from appearing in light hydrocarbon gasification and the transportation process, stops the emergence of incident, and especially gasification starts and stops the operating mode in stage and more complicated and unstable, accident appears easily. Therefore, the safety pipeline system is designed for the safety risks, and corresponding measures are taken to prevent the safety risks in the bud.
Description
Technical Field
The utility model relates to a gasification system technical field specifically is light hydrocarbon gasification safe start protection system.
Background
The light hydrocarbon oil and mixed gasified gas in the light hydrocarbon gasification system are all inflammable and explosive articles. Therefore, the safety of each part of the whole system and the production process is required to be emphasized more, the guiding principles of safe design, safe manufacturing, safe installation and safe operation are realized, the safety specification is obeyed, the safety principle is adhered to, the safety belief is established, and the safe operation is ensured; therefore, the utility model provides a light hydrocarbon gasification safe start protection system is used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light hydrocarbon gasification safety start protection system to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: light hydrocarbon gasification safety start protection system, including the safety protection system, the safety protection system includes that the waste heat flue gas preheats air supply subsystem, and the subsystem is adjusted in the fuel feeding, and oil atomization air subsystem, compound system gas subsystem, gasification gas and remaining liquid light hydrocarbon oil circulation subsystem, safe pressure release and diffusion subsystem, safety control and warning interlocking protection and antistatic explosion-proof protection subsystem, the waste heat flue gas preheats air supply subsystem and includes: air mixing check valves, mixed air pressure, a booster fan, a mixed air check valve, a combined preheater, an air electric heater and a mixed air regulating valve.
Preferably, the oil supply regulation subsystem comprises: the fuel oil pressure transmitter, the main fuel oil electromagnetic valve, the main fuel oil regulating valve, the bypass fuel oil switch valve, the bypass fuel oil electromagnetic valve, the fuel oil check valve and the fuel oil preheater.
Preferably, the oil atomizing air subsystem comprises: the device comprises an air compressor, a condensate separation filter, a compressed air solenoid valve and an air pressure regulator.
Preferably, the composite gas production subsystem comprises: the device comprises a composite gasification nozzle, a gas safety valve, a gasification tank air pressure monitoring device, a gasification tank body, a heating medium heater, a heating medium temperature controller, a gas-gas separator, a residual liquid level meter and a residual liquid level detector.
Preferably, the gasification fuel gas and residual liquid light hydrocarbon oil circulation subsystem comprises: the fuel gas circulating system comprises an oil return check valve, an air mixing check valve, an oil return pump, a residual liquid switch valve, a fuel gas circulating electromagnetic valve, a booster fan and an air mixing check valve.
Preferably, the safety pressure relief and venting subsystem comprises: gas safety valve, gasifier atmospheric pressure monitoring, diffusion solenoid valve and diffusion pipe.
Preferably, the safety control and alarm interlocking protection and anti-static explosion protection subsystem comprises: the device comprises a gasification tank air pressure monitoring device, an increased gas mixing device, an outlet gas pressure sensor, an outlet gas temperature sensor, a device for monitoring and outputting hot gas quality, a gasification chamber gas temperature device and an air heater outlet air temperature device.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a light hydrocarbon gasification safety start protection pipe-line system mainly is in order to prevent that the potential safety hazard that probably exists from appearing in light hydrocarbon gasification and the transportation process, stops the emergence of incident, and especially gasification starts and stops the operating mode in stage and more complicated and unstable, accident appears easily. Therefore, the safety pipeline system is designed for the safety risks, and corresponding measures are taken to prevent the safety risks in the bud.
Drawings
FIG. 1 is a block diagram of the safety protection system of the present invention;
fig. 2 is a flow chart of the safety protection system of the present invention.
In the figure: 1. a fuel pressure transmitter, 2, a main fuel electromagnetic valve, 3, a main fuel regulating valve, 4, a bypass fuel switch valve, 5, a bypass fuel electromagnetic valve, 6, an air compressor, 7, an oil return check valve, 8, a condensate separation filter, 9, a compressed air electromagnetic valve, 10, an air pressure regulator, 11, a fuel check valve, 12, an air mixing check valve, 13, a composite gasification nozzle, 14, a fuel safety valve, 15, a gasification tank air pressure monitoring device, 16, a gasification tank body, 17, an increased gas mixing device, 18, a heat medium heater, 19, a heat medium temperature controller, 20, an oil return pump, 21, an outlet fuel gas pressure, 22, an outlet fuel gas temperature sensor, 23, a device for monitoring and outputting the quality of the hot gas, 24, a bleeding electromagnetic valve, 25, a bleeding pipe, 26, a raffinate switch valve, 27, a fuel separator, 28, a raffinate liquid level meter, 29, a raffinate liquid level detector, 30. the system comprises a fuel gas circulating electromagnetic valve, a mixed air pressure device, a booster fan, a mixed air check valve, a combined preheater, an air electric heater, a mixed air adjusting valve, a fuel oil preheater, a gasification chamber fuel gas temperature device and an air heater outlet air temperature device, wherein the fuel gas circulating electromagnetic valve is 31, the booster fan is 32, the mixed air check valve is 33, the combined preheater is 34, the combined preheater is 35, the air electric heater is 36, the mixed air adjusting valve is 37, the fuel oil preheater is 38, and the air heater outlet air temperature device is 39.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution:
1. during cold start (start for the first time or after long-time stop work)
A. Preheating preparation: firstly, an air electric heater 35 in a combined preheater 34, a heat medium heater 18 in a gasification tank body 16, an air compressor 6 and a low-temperature auxiliary heater on an oil supply pipeline are started, when the temperature of air in the combined preheater 34 and the temperature of heat medium in the gasification tank body 16 reach corresponding set temperatures, a controller outputs an instruction, a fuel delivery pump is started, the opening of a main fuel oil regulating valve 3 is adjusted to a starting valve position, after the pressure of fuel oil is stable, a main fuel oil electromagnetic valve 2, a compressed air electromagnetic valve 9 and a booster fan 32 are simultaneously opened, and a gasification system is switched to an oil injection gasification stage.
B. Gas circulation starting: because the equipment in the gasification system is all in a low-temperature state at the initial stage of cold start, the gasification efficiency is influenced, and part of light hydrocarbon oil can not be fully gasified, and the calorific value of the mixed fuel gas is lower. At this time, the gas circulation solenoid valve 30 is opened to heat part of the low calorific value mixed gas and then draw back the heated gas, and the heated gas is pressurized to be used as mixed air to participate in gasification again. Along with the continuous and repeated circulation gasification of the mixed gas in the gasification system, the temperature and the pressure of the mixed gas in the gasification system continuously rise, when the pressure of the mixed gas rises to a set value of the discharge air pressure, the safety system automatically opens the discharge electromagnetic valve 24, partial low-heat-value mixed gas is discharged to the air through the discharge pipe 25, and the pressure of the mixed gas is maintained to be stable; when the temperature of the mixed gas reaches a normal value, the bleeding electromagnetic valve 24 is closed, gas supply is started for a user, the boiler is ignited to operate, at the moment, the gasification system closes the gas circulation electromagnetic valve 30, the normal gasification stage is switched to operate, and the input fuel quantity is automatically adjusted according to the gas consumption.
C. Waste heat and flue gas input: after the combustion equipment such as a boiler and the like normally operates, the system automatically starts a smoke fan, hot smoke is sent into a combined preheater 34 after passing through a filter condenser, firstly, a fuel oil pipeline is heated, the temperature of the fuel oil is raised, meanwhile, a fuel oil auxiliary electric heater stops working, then the hot smoke enters an air electric heater 35 to be mixed with air, when the temperature of the mixed air reaches a set value, the air electric heater also stops working, and after pressurization of a booster fan 32, the hot smoke is sent into a composite gasification nozzle 13 to participate in gasification.
2. Hot start (the restarting of gasification system after temporary work stop due to gas load change)
A. Hot start conditions: based on the temperature of the air outlet of the combined preheater 34 and the temperature of the mixed gas in the gasification tank body 16 not lower than the lowest set value, the air electric heater 35 and the heat medium heater 18 in the gasification tank body 16 are in working states because the gasification system is in a standby state at the moment, and the constant temperature heating function is achieved.
B. The hot start process of the gasification system comprises the following steps: when a user gas device (combustor) starts to be put into operation, the gasification system receives a starting signal and then sequentially starts the oil transfer pump, the main fuel oil electromagnetic valve 2, the main fuel oil regulating valve 3, the compressed air electromagnetic valve 9, the booster fan 32 and the booster fan are opened, and gasified fuel and gasification media which participate in system operation, such as fuel oil, compressed air, mixed air and the like enter the composite gasification nozzle 13 through corresponding pipeline systems respectively to participate in gasification.
3. Assisted manual start
When the automatic fuel oil adjusting function is lost due to some reason, manual gasification can be realized by adopting a manual scheme, firstly, the bypass fuel oil switch valve 4 is manually adjusted to a starting opening, then the fuel oil pump bypass fuel oil electromagnetic valve 5, the compressed air electromagnetic valve 9, the booster fan, the flue gas fan and the like are started to start gasification, the starting is completed, then the opening of the manual fuel oil adjusting valve is manually adjusted properly according to the actual load requirement by referring to the fuel oil flow and the fuel gas flow, a proper amount of fuel oil is provided, mixed fuel gas with a corresponding amount and a corresponding heat value is generated, and the combustion demand of the fuel gas equipment is met.
4. Recovery of gasified residue
Because of the imperfection of the initial gasification condition of the gasification system, part of the gasification residual oil can be generated and is sent to the oil delivery pipe through the oil return pump to participate in the gasification again, and the start and stop of the oil return pump are controlled by the liquid level of the residual oil.
Safety protection during gasification start-up operation
1. Gasification system pressure protection
a. Oil pressure monitoring, alarming and overpressure safety relief of oil storage tank
b. Fuel pressure regulation, monitoring and alarming
c. Gasification pressure monitoring, alarm interlocking and safety valve discharging in gasification tank
d. Hybrid air pressure monitoring and alarming
e. Pressure monitoring, controlling, alarm interlocking, safety relief valve and pressure relief of mixed gas outlet
f. Atomized air pressure monitoring and alarming
2. Gasification system temperature control protection
a. Fuel temperature detection and alarm
b. Mixed air temperature detection and alarm
c. Gasification temperature monitoring, adjusting and alarming in gasification tank
d. Monitoring, controlling and alarming heat medium temperature
e. Temperature monitoring, adjusting and alarming for mixed gas outlet
3. Monitoring, controlling and alarming for liquid level of residual liquid in gasification system
4. Mixed gas heat value monitoring and alarming
5. Positive pressure explosion-proof control cabinet, explosion-proof sensor and explosion-proof fuel pump motor
6. Oil delivery pipe and gas pipe anti-static and lightning grounding device for oil storage tank
7. Combustible gas leakage detection, cut-off and alarm interlock.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Light hydrocarbon gasification safe start protection system, including the safety protection system, its characterized in that: the safety protection system comprises a waste heat flue gas preheating air supply subsystem, an oil supply adjusting subsystem, an oil atomization air subsystem, a composite gas making subsystem, a gasified gas and residual liquid light hydrocarbon oil circulating subsystem, a safety pressure relief and bleeding subsystem, a safety control and alarm interlocking protection and antistatic explosion-proof protection subsystem, wherein the subsystems are connected sequentially through a pipeline, and the waste heat flue gas preheating air supply subsystem comprises: a mixed air check valve (12), a mixed air pressure (31), a booster fan (32), a mixed air check valve (33), a combined preheater (34), an air electric heater (35) and a mixed air regulating valve (36); the safe pressure relief and venting subsystem comprises: the system comprises a gas safety valve (14), a gasification tank air pressure monitoring device (15), a bleeding solenoid valve (24) and a bleeding pipe (25), wherein the structures are sequentially connected through a pipeline; the safety control and alarm interlocking protection and anti-static explosion-proof protection subsystem comprises: the device comprises a gasification tank air pressure monitoring device (15), an increased gas mixing device (17), an outlet gas pressure device (21), an outlet gas temperature sensor (22), a device for monitoring and outputting hot gas quality (23), a gasification chamber gas temperature device (38) and an air heater outlet air temperature device (39), wherein the structures are sequentially connected through a pipeline.
2. The light hydrocarbon gasification safe start-up protection system of claim 1, wherein: the oil supply regulation subsystem includes: the fuel oil pressure transmitter (1), the main fuel oil electromagnetic valve (2), the main fuel oil regulating valve (3), the bypass fuel oil switch valve (4), the bypass fuel oil electromagnetic valve (5), the fuel oil check valve (11) and the fuel oil preheater (37) are sequentially connected through pipelines.
3. The light hydrocarbon gasification safe start-up protection system of claim 1, wherein: the oil atomizing air subsystem includes: air compressor machine (6), lime set separation filter (8), compressed air solenoid valve (9) and air pressure regulator (10), above-mentioned structure connects gradually through the pipeline.
4. The light hydrocarbon gasification safe start-up protection system of claim 1, wherein: the composite gas production subsystem comprises: the device comprises a composite gasification nozzle (13), a gas safety valve (14), a gasification tank air pressure monitoring device (15), a gasification tank body (16), a heat medium heater (18), a heat medium temperature controller (19), a gas-gas separator (27), a residual liquid level meter (28) and a residual liquid level detector (29), wherein the composite gasification nozzle, the gas safety valve (14), the gasification tank air pressure monitoring device, the gasification tank body, the heat medium heater, the residual liquid level meter and the residual liquid level detector are sequentially connected through pipelines.
5. The light hydrocarbon gasification safe start-up protection system of claim 1, wherein: the gasification fuel gas and residual liquid light hydrocarbon oil circulating subsystem comprises: the device comprises an oil return check valve (7), an air mixing check valve (12), an oil return pump (20), a residual liquid switch valve (26), a gas circulation solenoid valve (30), a booster fan (32) and an air mixing check valve (33), which are sequentially connected through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022803240.9U CN215112717U (en) | 2020-11-28 | 2020-11-28 | Light hydrocarbon gasification safe start protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022803240.9U CN215112717U (en) | 2020-11-28 | 2020-11-28 | Light hydrocarbon gasification safe start protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215112717U true CN215112717U (en) | 2021-12-10 |
Family
ID=79263027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022803240.9U Active CN215112717U (en) | 2020-11-28 | 2020-11-28 | Light hydrocarbon gasification safe start protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215112717U (en) |
-
2020
- 2020-11-28 CN CN202022803240.9U patent/CN215112717U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104534508B (en) | A kind of biogas safe combustion controls device and control method | |
| CN107905898B (en) | Fuel system of miniature gas turbine and control method thereof | |
| CN103629693A (en) | Control system and control method of LNG immersion combustion gasifier | |
| US4885999A (en) | Pulverized coal firing method and equipment therefor | |
| CN215112717U (en) | Light hydrocarbon gasification safe start protection system | |
| CN202613486U (en) | Gas energy storage type safe and energy-saving pressure-stabilizing boiler oil supply system | |
| CN115288894B (en) | Methanol fuel supply system | |
| EP2115359B1 (en) | Method for controlling the supply of fuel gas to a gas-turbine burner | |
| CN216244387U (en) | Automatic fuel pressure control system | |
| CN213146620U (en) | Oil-fired boiler oil circuit system and oil-fired boiler | |
| CN112648634A (en) | Novel combined liquid light hydrocarbon gasification system | |
| CN108613197B (en) | Device for recycling heat energy of RTO incinerator and application method thereof | |
| CN108253447B (en) | Biomass coupling pulverized coal combustion system and control method thereof | |
| CN208253645U (en) | Biomass couples pulverized coal combustion system | |
| CN105889907A (en) | Circulating fluidized bed boiler ignition device and ignition control method thereof | |
| CN203081625U (en) | Remote oil supply system of crane fuel tank | |
| CN111442189A (en) | Pressure boosting gas equipment | |
| CN110469866A (en) | A kind of gasification installation | |
| CN217031211U (en) | Sludge combustible gas hot-blast stove ignition control system | |
| CN218347466U (en) | Fuel supply system for gas turbine | |
| CN215633681U (en) | Automatic water replenishing device for high-pressure replenishing water of furnace water circulating pump | |
| CN211893689U (en) | Fuel heating vehicle | |
| CN220017387U (en) | VOC waste gas treatment system of horizontal-vertical mixing gluing unit | |
| CN215216417U (en) | Multi-energy combined intelligent heating device | |
| CN113422091B (en) | Combustion dehydrogenation system for metal-air battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |