CN212390344U - Oxygen removing water system of energy-saving catalytic cracking device - Google Patents
Oxygen removing water system of energy-saving catalytic cracking device Download PDFInfo
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- CN212390344U CN212390344U CN202021034158.8U CN202021034158U CN212390344U CN 212390344 U CN212390344 U CN 212390344U CN 202021034158 U CN202021034158 U CN 202021034158U CN 212390344 U CN212390344 U CN 212390344U
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Abstract
The utility model discloses an energy-saving catalytic cracking unit oxygen-eliminating water system, including oxygen-eliminating device, feed water heater, exhaust-heat boiler, middling pressure deoxidization water pump, low pressure deoxidization water pump and valve. An energy-saving pipeline is connected between the inlet pipeline of the feed water heater and the pipeline at the other end of the fourth valve, a seventh valve, an electric valve and an eighth valve are sequentially arranged on the energy-saving pipeline, and a ninth valve is connected between the left end of the seventh valve and the right end of the eighth valve; a pressure transmitter and a safety valve are arranged on the pipeline at the right end of the eighth valve; the pressure transmitter is electrically connected with the signal end of the controller, and the output end of the controller is electrically connected with the electric valve. The utility model relates to a rationally, reform transform easily, it reduces catalytic cracking device middling pressure deoxidization water for low pressure deoxidization water through pressure-controlled valve to supply low pressure steam pocket and each temperature and pressure reducer to use, stopped low pressure deoxidization water pump, reduced the power consumption of device.
Description
Technical Field
The utility model relates to a technical field is reformed transform to the oil refining equipment, concretely relates to energy-saving catalytic cracking unit deoxidization water system.
Background
At present, 140 ten thousand tons of catalytic cracking devices meet the requirements of normal production, a medium-pressure deoxygenation water pump and a low-pressure deoxygenation water pump are respectively provided, the using amount of medium-pressure deoxygenation water is larger and is about 145t/h, the using amount of low-pressure deoxygenation water is smaller and is only about 5t/h, and the load of the medium-pressure deoxygenation water pump still has allowance. In addition, the catalytic device has more pumps, the workload of operators and maintenance personnel is large, the labor load of related personnel can be effectively reduced after the low-pressure deoxygenation water pump is stopped, and the maintenance cost of accessories of the pumps is reduced.
Disclosure of Invention
The utility model aims at providing an energy-saving catalytic cracking unit deoxidization water system to the defect that prior art exists, aim at a low pressure deoxidization water pump of outage, reduce the consumption of device electric quantity.
The technical scheme is as follows: energy-saving catalytic cracking unit deoxidization water system, including oxygen-eliminating device, feed water heater, exhaust-heat boiler, middling pressure deoxidization water pump, low pressure deoxidization water pump and valve, the one end of oxygen-eliminating device exit end through first valve pipe connection second valve and the one end of fourth valve, the entry end of middling pressure deoxidization water pump is connected to the other end of second valve, the delivery end of middling pressure deoxidization water pump passes through the third valve and connects feed water heater entry end, and feed water heater exit end connects the exhaust-heat boiler entry end, and the middling pressure steam drum pipeline is connected to the exhaust-heat boiler exit end, low pressure deoxidization water pump entry end is connected to the other end of fourth valve, and low pressure steam drum pipeline, temperature reduction pressure reducer pipeline and solvent tank pipeline are connected through the fifth valve to low pressure deoxidization water pump exit end. An energy-saving pipeline is connected between the inlet pipeline of the feed water heater and the pipeline at the other end of the fourth valve, a seventh valve, an electric valve and an eighth valve are sequentially arranged on the energy-saving pipeline, and a ninth valve is connected between the left end of the seventh valve and the right end of the eighth valve; a pressure transmitter and a safety valve are arranged on the pipeline at the right end of the eighth valve; the pressure transmitter is electrically connected with the signal end of the controller, and the output end of the controller is electrically connected with the electric valve.
The first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve are all manual regulating valves.
The controller is a programmable controller.
Compared with the prior art, the utility model, have following advantage: reasonable in design, transformation are easy, and it reduces catalytic cracking unit middling pressure deoxidization water for low pressure deoxidization water through pressure-controlled valve to supply low pressure steam pocket and each temperature and pressure reducer to use, stopped low pressure deoxidization water pump, reduced the power consumption of device.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, an energy-saving catalytic cracking unit deoxygenated water system comprises a deoxygenator 1, a feed water heater 2, a waste heat boiler 3, a medium-pressure deoxygenation water pump 4, a low-pressure deoxygenation water pump 5 and valves, wherein an outlet end of the deoxygenator 1 is connected with one end of a second valve 12 and one end of a fourth valve 14 through a first valve 11, the other end of the second valve 12 is connected with an inlet end of the medium-pressure deoxygenation water pump 4, an outlet end of the medium-pressure deoxygenation water pump 4 is connected with an inlet end of the feed water heater 2 through a third valve 13, an outlet end of the feed water heater 2 is connected with an inlet end of the waste heat boiler 3, an outlet end of the waste heat boiler 3 is connected with the medium-pressure steam drum pipeline 6, the other end of the fourth valve 14 is connected with an inlet end of the low-pressure deoxygenation water pump, and a sixth valve 16 is connected between the inlet of the feed water heater 2 and the top of the deaerator 1 through a pipeline. An energy-saving pipeline 10 is connected between an inlet pipeline of the feed water heater 2 and the other end pipeline of the fourth valve 14, a seventh valve 17, an electric valve 20 and an eighth valve 18 are sequentially arranged on the energy-saving pipeline 10, and a ninth valve 19 is connected between the left end of the seventh valve 17 and the right end of the eighth valve 18; a pressure transmitter 21 and a safety valve 22 are arranged on the pipeline at the right end of the eighth valve 18; the pressure transmitter 21 is electrically connected with a signal end of the controller 23, and an output end of the controller 23 is electrically connected with the electric valve 20. The first valve 11 to the ninth valve 19 are all manual regulating valves. The controller 23 is a programmable controller. The sixth valve 16 is used for maintenance pressure relief.
When the device is operated, the fourth valve, the fifth valve 15 and the low-pressure deoxygenation water pump 5 are closed; after medium-pressure deoxygenated water passes through a medium-pressure deoxygenation water pump 4 from a deoxygenator 1, most of the medium-pressure deoxygenated water flows to a residual boiler water supply heater 2, and is heated by a residual boiler to each medium-pressure steam drum pipeline 6, a small part of the medium-pressure deoxygenated water flows to a fractionation low-pressure steam drum pipeline 7, a temperature and pressure reduction device pipeline 8 and a solvent tank pipeline 9 through an energy-saving pipeline 10 of DN50, an electric valve 20, a seventh valve 17 and an eighth valve 18 at the front end and the rear end of the electric valve are mounted on the energy-saving pipeline 10 for auxiliary pressure adjustment, a ninth valve 19 is additionally arranged to prevent the electric valve 20 from being damaged for maintenance, a pressure transmitter 21 is mounted behind the electric valve 20 and is electrically connected with a controller 23, the pressure value sensed by the pressure; in order to ensure the safety of the equipment, a safety valve 22 is arranged on the pipeline, and then the energy-saving pipeline 10 is connected to the outlet pipeline of the low-pressure deoxygenated water pump, so that water supply to each required position is realized. After the system is transformed, the low-pressure deoxygenation water pump is stopped, and the electricity cost is saved by about 48 ten thousand yuan each year. When the electric valve and the controller thereof are in failure or are closed, the fourth valve, the fifth valve 15 and the low-pressure deoxygenation water pump 5 can be opened to supply water to each required position.
The utility model relates to a rationally, reform transform easily, it reduces catalytic cracking device middling pressure deoxidization water for low pressure deoxidization water through pressure-controlled valve to supply low pressure steam pocket and each temperature and pressure reducer to use, stopped low pressure deoxidization water pump, reduced the power consumption of device.
Claims (3)
1. The deoxygenation water system of the energy-saving catalytic cracking device comprises a deoxygenator, a feed water heater, a waste heat boiler, a medium-pressure deoxygenation water pump, a low-pressure deoxygenation water pump and a valve, wherein the outlet end of the deoxygenator is connected with one end of a second valve and one end of a fourth valve through a first valve pipeline, the other end of the second valve is connected with the inlet end of the medium-pressure deoxygenation water pump, the outlet end of the medium-pressure deoxygenation water pump is connected with the inlet end of the feed water heater through a third valve, the outlet end of the feed water heater is connected with the inlet end of the waste, the other end of the fourth valve is connected with the inlet end of a low-pressure deoxygenation water pump, the outlet end of the low-pressure deoxygenation water pump is connected with a fractionation low-pressure steam drum pipeline, a temperature and pressure reduction device pipeline and a solvent tank pipeline through a fifth valve, the pipe connection has the sixth valve, its characterized in that between feedwater heater entry and the oxygen-eliminating device top: an energy-saving pipeline is connected between the inlet pipeline of the feed water heater and the pipeline at the other end of the fourth valve, a seventh valve, an electric valve and an eighth valve are sequentially arranged on the energy-saving pipeline, and a ninth valve is connected between the left end of the seventh valve and the right end of the eighth valve; a pressure transmitter and a safety valve are arranged on the pipeline at the right end of the eighth valve; the pressure transmitter is electrically connected with the signal end of the controller, and the output end of the controller is electrically connected with the electric valve.
2. The oxygen removal water system of the energy-saving catalytic cracking unit of claim 1, wherein: the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve are all manual regulating valves.
3. The oxygen removal water system of the energy-saving catalytic cracking unit of claim 1, wherein: the controller is a programmable controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021034158.8U CN212390344U (en) | 2020-06-08 | 2020-06-08 | Oxygen removing water system of energy-saving catalytic cracking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021034158.8U CN212390344U (en) | 2020-06-08 | 2020-06-08 | Oxygen removing water system of energy-saving catalytic cracking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212390344U true CN212390344U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202021034158.8U Active CN212390344U (en) | 2020-06-08 | 2020-06-08 | Oxygen removing water system of energy-saving catalytic cracking device |
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| CN (1) | CN212390344U (en) |
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2020
- 2020-06-08 CN CN202021034158.8U patent/CN212390344U/en active Active
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