CN107913645A - A kind of hydrogenation reaction feed system of achievable energy regenerating - Google Patents
A kind of hydrogenation reaction feed system of achievable energy regenerating Download PDFInfo
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- CN107913645A CN107913645A CN201610886597.3A CN201610886597A CN107913645A CN 107913645 A CN107913645 A CN 107913645A CN 201610886597 A CN201610886597 A CN 201610886597A CN 107913645 A CN107913645 A CN 107913645A
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- pump
- turbine
- pressure
- hydrogenation
- pressure separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
Abstract
The present invention relates to a kind of hydrogenation reaction feed system of achievable energy regenerating, including heating furnace, hydrogenation reactor, low pressure separator, high-pressure separator, turbine booster pump, middle pressure feed pump and raw material surge tank, turbine booster pump to include turbine side and pump side.Heating furnace is connected with hydrogenation reactor, and the discharge port of hydrogenation reactor is connected to high-pressure separator.High-pressure separator discharge port is divided into two-way, is connected to low pressure separator through high-pressure low-flow regulating valve all the way, is connected to low pressure separator through the turbine side of turbine booster pump and counterbalance valve all the way.The pump side of feed pump and turbine booster pump is pressed to be connected to heating furnace entrance in raw material surge tank warp.The pressure energy of hydrogenation reaction high-pressure separator out-feed liquid is converted into the pressure energy of hydrogenation feeding liquid by the present invention, reduces hydrogenation process energy consumption and production cost.Since hydrogenation feed pump pressure reduces, the sealing performance of system is improved, is conducive to extend the stable operation cycle of hydrogenation plant.
Description
Technical field
The invention belongs to Petrochemical Production Technologies field, is related to a kind of hydrogenation reaction feed system, and in particular to a kind of
The hydrogenation reaction feed system of energy regenerating can be achieved.
Background technology
Hydrogenation refers to that in the presence of a catalyst the adduction of some chemical substances and hydrogen is reacted.Hydrogen addition technology is mainly used in
The industries such as oil refining, chemical industry and coal chemical industry.Hydrogen addition technology is divided into hydrofinishing and is hydrocracked two fields, hydrofinishing and hydrogenation
Process flow is not distinguished significantly in principle, and process equipment configuration is also substantially similar, generally comprises hydrogenation reaction, generation
Oily heat exchange, cooling, piece-rate system, hydrogenating materials charging and circulation hydrogen system.The reaction pressure of hydrofinishing generally 2~
10MPa, for the reaction pressure being hydrocracked generally in 8~20 MPa, hydrogenation reaction pressure is higher, the driving of hydrogenation reaction feed pump
Power is bigger.Hydrofinishing and the reaction discharging being hydrocracked enter high-pressure separator, and oil gas is carried out in high-pressure separator
Separation, the high pressure out-feed liquid after separation enter low pressure separator after pressure reducing valve depressurizes and separate.The pressure of high-low pressure separator
Difference is very big, and the out-feed liquid of high-pressure separator carries huge pressure energy, in order to save the energy, existing hydrogenation technique technology
It is that the high pressure out-feed liquid of high-pressure separator is imported hydraulic turbine to recover energy.Hydraulic turbine as high-pressure hydrogenation feed pump
The pressure energy of high-pressure separator out-feed liquid is driven feedstock oil feed pump by two drivings into mechanical energy, and motor is fed as hydrogenation
First driving of high-pressure pump, when hydraulic turbine, which is contributed, to do work, the driving output power of motor of hydrogenation charging high-pressure pump reduces, from
And achieve the purpose that to reduce driving power needed for hydrogenation charging high-pressure pump.Being hydrogenated with charging hydraulic turbine Energy Recovery Technology has
Following shortcoming：1. high-pressure hydrogenation feed pump and hydraulic turbine all use multi-level form, every pump and hydraulic turbine have 2 it is overhanging
Axis often leaks, it is necessary to complicated high pressure-temperature mechanical seal and auxiliary flushing shielding system, causes production accident, tie up
Repair costly.2. hydraulic turbine energy recovery efficiency in high pressure, medium-small flow operating mode is low.3. hydraulic turbine working range is narrow,
It is suitable only for more constant operating mode.When the flow of hydraulic turbine is less than the 40% of metered flow, hydraulic turbine not only cannot
Output power can also consume power of motor.4. hydraulic turbine is rigidly connected with clutch, motor, speed increaser and High pressure feeding pump,
Energy transmission link is more, efficiency is low, and unit is complicated, bulky, causes installation and repairing difficulty big.
The content of the invention
The object of the present invention is to provide a kind of hydrogenation reaction feed system of achievable energy regenerating, hydrogenation reaction high pressure
The pressure energy of separator out-feed liquid is converted into the pressure energy of hydrogenation feeding liquid, to reduce the driving power needed for hydrogenation feed pump,
Hydrogenation process energy consumption and production cost are reduced, improves the sealing performance of feed pump, extends the cycle of operation of hydrogenation plant.
The technical scheme is that：The hydrogenation reaction feed system of energy regenerating can be achieved, including heating furnace, hydrogenation are instead
Answer device, low pressure separator, high-pressure separator and raw material surge tank.Heating furnace is connected with hydrogenation reactor, and hydrogenation reactor goes out
Material mouth is connected to high-pressure separator.Feed system is equipped with turbine booster pump and middle pressure feed pump, and turbine booster pump includes turbine side
And pump side.High-pressure separator discharge port is divided into two-way, is connected to low pressure separator through high-pressure low-flow regulating valve all the way, passes through all the way
The turbine side of turbine booster pump and counterbalance valve are connected to low pressure separator.Feed pump and turbine booster pump are pressed in raw material surge tank warp
Pump side be connected to heating furnace entrance.
Feed system is equipped with Liquid level adjusting valve and High pressure feeding pump, and high-pressure separator discharge port is connected by Liquid level adjusting valve
To low pressure separator, raw material surge tank is connected to heating furnace entrance by High pressure feeding pump.Turbine booster pump is by pump case, pump leaf
Wheel, pump shaft and turbo wheel are formed, and impeller of pump, pump shaft and turbo wheel are sealingly mounted in pump case.Impeller of pump and turbine leaf
Wheel is connected by pump shaft, and centre bearing is housed among pump shaft.The pump side of turbine booster pump is equipped with pump intake and pump discharge, and turbine increases
The turbine side of press pump is equipped with turbine entrance and turbine exports.Feed system is equipped with stop valve, flow control valve and check valve, high pressure
Separator discharge port is connected by stop valve with flow control valve, the outlet of flow control valve and high-pressure low-flow regulating valve and saturating
The turbine entrance connection of flat booster pump, the pump discharge of turbine booster pump are connected to heating furnace entrance through check valve.Turbine booster pump
Exported equipped with insulating liquid entrance and insulating liquid, feed system is equipped with turbine booster pump isolation fluid circulation, insulating liquid cyclic system
System includes insulating liquid high-pressure pump, filter and check-valves.Insulating liquid high-pressure pump is connected to insulating liquid by filter and check-valves
Entrance, insulating liquid outlet are connected to raw material surge tank through pressure reducing valve.High-pressure separator separates for high pressure hot separator or cold anticyclone
Device, the insulating liquid for isolating fluid circulation are hydrogenation plant product oil or the feed liquid of cold high pressure separator outlet.
The turbo wheel of turbine booster pump is converted into high-pressure separator out-feed liquid pressure energy the mechanical energy of pump shaft, impeller of pump
The mechanical energy of pump shaft is converted into again the pressure energy of hydrogenation feeding liquid.High pressure feeding pump is full flow total head high-pressure pump, is being added
Come into operation when hydrogen production device is driven and turbine booster pump breaks down.The totally-enclosed turbine that is installed on of all rotational parts of turbine booster pump increases
In press pump high pressure barrel-type casing, do not have overhanging rotation axis, therefore turbine booster pump is not required to high pressure-temperature mechanical seal and its auxiliary punching
Wash shielding system.
In hydrogenation reactor, material liquid and hydrogen carry out hydrogenation reaction under catalyst action, and hydrogenation reactor goes out
The separation that feed liquid carries out gas-liquid with entering high-pressure separator after hydrogenation feeding liquid heat exchange reduction temperature, high-pressure separator out-feed liquid warp
Enter turbine booster pump after flow-rate adjustment valve regulation flow, hydrogenation high pressure out-feed liquid and medium pressure hydrogenation are realized in turbine booster pump
The energy exchange of feeding liquid, enters low pressure separator after hydrogenation out-feed liquid decompression.Hydrogenation reaction low pressure feed liquid is through medium pressure hydrogenation
Feed pump enters turbine booster pump after once boosting and carries out secondary booster, enters hydrogenation instead after being increased to pressure needed for hydrogenation reaction
Answer system.Insulating liquid that turbine booster pump is sealed by centre bearing realizes isolating to hydrogenation feeding liquid and out-feed liquid, insulating liquid
It is pumped into by insulating liquid high-pressure pump or cold high pressure separator high pressure out-feed liquid provides.
The hydrogenation reaction feed system of the achievable energy regenerating of the present invention is by adding turbine booster pump, by hydrogenation reaction height
The pressure energy of pressure separator out-feed liquid is converted into the pressure energy of hydrogenation feeding liquid, can reduce lift needed for hydrogenation charging high-pressure pump
30~60%, 30~60% of driving power needed for hydrogenation charging high-pressure pump is reduced, advantageously reduces hydrogenation process energy consumption and production
Cost.The turbo wheel and impeller of pump of turbine booster pump are sealed in pump case, with the discharging of product oil or cold high pressure separator
Liquid is isolated, and sealing effect is good, No leakage and feed liquid pollution problem.Turbine boosting pump structure is simple, easy to implement, manufacture and operation
Cost is low.Since hydrogenation feed pump pressure reduces, the sealing performance of system is improved, is conducive to extend the stable fortune of hydrogenation plant
The row cycle.
Brief description of the drawings
Fig. 1 is the flow diagram of the achievable energy regenerating hydrogenation reaction feed system of the present invention；
Fig. 2 is turbine booster pump fundamental diagram；
Fig. 3 is turbine booster pump insulating liquid flow diagram；
Fig. 4 is high-pressure separator liquid level control principle drawing；
Fig. 5 is flow diagram of the prior art using the hydrogenation reaction feed system of cold high pressure separator；
Fig. 6 is flow diagram of the prior art using the hydrogenation reaction feed system of high pressure hot separator；
Fig. 7 is hydrogenated with feed system flow diagram for prior art energy regenerating hydraulic turbine four-in-one unit.
Wherein：1-hydrogen gas compressor, 2-circulating hydrogen compressor, 3-heat exchanger, 4-heating furnace, 5-hydrogenation are anti-
Answer device, 6-low pressure separator, 7-regulating valve, 8-high-pressure separator, 9-air cooler, 10-High pressure feeding pump, 11-heat exchange
Room, 12-hydrocracking reaction room, 13-high pressure hot separator, 14-regulating valve, 15-thermal low-pressure separators, 16-speedup
Case, 17-motor, 18-clutch, 19-hydraulic turbine, 20-stop valve, 21-flow control valve, 22-insulating liquid high pressure
Pump, 23-filter, 24-raw material surge tank, 25-middle pressure feed pump, 26-turbine booster pump, 27-counterbalance valve, 28-it is high
Pressure control valve for small flows, 29-Liquid level adjusting valve, 30-turbine entrance, 31-centre bearing, 32-pump discharge, 33-be pumped into
Mouth, the outlet of 34-pump case, 35-impeller of pump, 36-pump shaft, 37-turbo wheel, 38-turbine, 39-pressure reducing valve, 40-every
Chaotropic outlet, 41-check valve, 42-check-valves, 43-insulating liquid entrance.
Embodiment
With reference to embodiment and attached drawing, the present invention is described in detail.The scope of the present invention is not limited to embodiment,
Those skilled in the art make any change in the range of the claims in the present invention restriction and fall within the scope of protection of the invention.
The hydrogenation reaction feed system of the achievable energy regenerating of the present invention is as shown in Figure 1, including heating furnace 4, hydrogenation reaction
Device 5, low pressure separator 6, high-pressure separator 8, Liquid level adjusting valve 29, High pressure feeding pump 10, turbine booster pump 26, middle pressure feed pump
25 and raw material surge tank 24.As shown in Fig. 2, turbine booster pump is by pump case 34,37 structure of impeller of pump 35, pump shaft 36 and turbo wheel
Into impeller of pump, pump shaft and turbo wheel are sealingly mounted in pump case.Impeller of pump is connected with turbo wheel by pump shaft, pump shaft
Centre is equipped with centre bearing 31.Turbine booster pump two is respectively turbine side and pump side, and turbine side is equipped with turbine entrance 30 and thoroughly
Clear mouth 38, pump side is equipped with pump intake 33 and pump discharge 32.Pressure feed pump is connected to turbine booster pump in raw material surge tank warp
Pump intake, pump discharge are connected to heating furnace entrance by check valve 41.As spare, the a-road-through of raw material surge tank is excessive to be pressed into
Material pump is connected to heating furnace entrance.Heating furnace is connected with hydrogenation reactor, and the discharge port of hydrogenation reactor is connected to high pressure separation
Device.The discharge port of high-pressure separator is divided into two-way, and all the way to be spare, low pressure separator is connected to by Liquid level adjusting valve 29, and one
Road is connected to flow control valve 21 by stop valve 20.Flow-rate adjustment valve outlet is divided into two-way again, all the way through high-pressure low-flow tune
Section valve 28 is connected to low pressure separator, and another way is connected to the turbine entrance of turbine booster pump, and turbine outlet passes through counterbalance valve 27
It is connected to low pressure separator.Feed system is equipped with turbine booster pump isolation fluid circulation, as shown in figure 3, insulating liquid cyclic system
System includes insulating liquid high-pressure pump 22, pressure reducing valve 39, filter 23 and check-valves 42, and turbine booster pump 26 is equipped with insulating liquid entrance 43
With insulating liquid outlet 40.Insulating liquid high-pressure pump is connected to insulating liquid entrance by filter and check-valves, and insulating liquid is exported through subtracting
Pressure valve is connected to raw material surge tank 24, and the insulating liquid for isolating fluid circulation is hydrogenation plant product oil.
Feed pump 25 is pressed to arrive the pump intake of turbine booster pump in raw material surge tank in hydrogenating materials warp, in turbine booster pump
Enter heating furnace 4 through check valve 41 after pump side pressurization, added after being heated to the temperature of technological requirement into hydrogenation reactor 5
Hydrogen reacts.Hydrogenation reaction product is separated through upper part discharge port to high-pressure separator 8, and the feed liquid after separation is divided into two parts,
A part arrives low pressure separator 6 through high-pressure low-flow regulating valve 28, and another part is through turbine booster pump turbine side and counterbalance valve 27
Into low pressure separator.Pressure energy is converted into mechanical energy by turbo wheel 37, the impeller of pump of pump side is passed to by pump shaft 36
35, then convert mechanical energy into the pressure energy of hydrogenation charging.The insulating liquid of turbine booster pump by hydrogenation plant product oil by every
Supplied after the supercharging of chaotropic high-pressure pump, insulating liquid outlet is provided with check-valves, and to avoid mutual leakage, high_voltage isolation liquid is through accurate mistake
Enter turbine booster pump insulating liquid entrance through flowmeter and check-valves after filter impurity screening particle, insulating liquid is pressurized by turbine
Hydrogenation feed surge tank is returned after the centre bearing of pump after exporting and passing through pressure reducing valve.Isolation lubrication flow needed for turbine booster pump
Very little is measured, to be hydrogenated with the 1%~2% of feed rate.
Middle pressure feed pump is lift feed pump in full flow, middle pressure feed pump 25 and 26 tandem work of turbine booster pump
Make, it is common to complete hydrogenation feeding liquid boosting task.As shown in figure 4, the liquid level and pressure of high-pressure separator 8 are by flow control valve
21st, 27 coordinated signals of high-pressure low-flow regulating valve 28 and counterbalance valve.High pressure feeding pump 10 is the stand-by pump of turbine booster pump, saturating
High pressure feeding pump, High pressure feeding pump and high-pressure separator are used when flat booster pump and middle pressure feed pump disable or hydrogenation plant is driven
Liquid level adjusting valve 29 on 8 discharge opening pipelines is applied in combination.
After hydrogenation feed system using achievable energy recovery turbine booster pump, the high pressure of hydrogenation reaction high-pressure separator
Out-feed liquid directly carries out energy exchange with hydrogenation reaction low pressure feed liquid, and energy conversion efficiency is higher than 50%, hydrogenation reaction feed pump
Required motor driving power is greatly lowered, and is reached as high as 60%, is advantageously reduced energy consumption.Because hydrogenation feed pump pressure reduces, improve
The sealing performance of device, is conducive to extend production run cycle of hydrogenation plant.
Claims (6)
1. a kind of hydrogenation reaction feed system of achievable energy regenerating, including heating furnace（4）, hydrogenation reactor（5）, low pressure point
From device（6）, high-pressure separator（8）With raw material surge tank（24）, the heating furnace is connected with hydrogenation reactor, the hydrogenation reaction
The discharge port of device is connected to high-pressure separator, it is characterized in that：The feed system is equipped with turbine booster pump（26）Material is pressed into in
Pump（25）, the turbine booster pump includes turbine side and pump side；The high-pressure separator discharge port is divided into two-way, all the way through high pressure
Control valve for small flows（28）Low pressure separator is connected to, all the way through the turbine side of turbine booster pump and counterbalance valve（27）It is connected to low
Press separator；The pump side of feed pump and turbine booster pump is pressed to be connected to heating furnace entrance in the raw material surge tank warp.
2. the hydrogenation reaction feed system of achievable energy regenerating according to claim 1, it is characterized in that：The charging system
System is equipped with Liquid level adjusting valve（29）And High pressure feeding pump（10）；The high-pressure separator（8）Discharge port is connected by Liquid level adjusting valve
It is connected to low pressure separator；The raw material surge tank（24）Heating furnace is connected to by High pressure feeding pump（4）Entrance.
3. the hydrogenation reaction feed system of achievable energy regenerating according to claim 1, it is characterized in that：The turbine increases
Press pump is by pump case（34）, impeller of pump（35）, pump shaft（36）And turbo wheel（37）Form, the impeller of pump, pump shaft and turbine
Impeller seals is installed in pump case；Impeller of pump is connected with turbo wheel by pump shaft, and centre bearing is housed among the pump shaft
（31）；The pump side of the turbine booster pump is equipped with pump intake（33）And pump discharge（32）；The turbine side of the turbine booster pump is set
There is turbine entrance（30）Exported with turbine（38）.
4. the hydrogenation reaction feed system of achievable energy regenerating according to claim 3, it is characterized in that：The charging system
System is equipped with stop valve（20）, flow control valve（21）And check valve（41）；The high-pressure separator（8）Discharge port passes through stop valve
It is connected with flow control valve, outlet and the high-pressure low-flow regulating valve of the flow control valve（28）With turbine booster pump（26）'s
Turbine entrance（30）Connection；The turbine booster pump（26）Pump discharge（32）Heating furnace is connected to through check valve（4）Entrance.
5. the hydrogenation reaction feed system of achievable energy regenerating according to claim 3, it is characterized in that：The turbine increases
Press pump（26）Equipped with insulating liquid entrance（43）Exported with insulating liquid（40）；The feed system is followed equipped with turbine booster pump insulating liquid
Loop system, isolation fluid circulation include insulating liquid high-pressure pump（22）, filter（23）And check-valves（42）；The insulating liquid is high
Press pump is connected to insulating liquid entrance by filter and check-valves, and the insulating liquid outlet is through pressure reducing valve（39）Raw material is connected to delay
Rush tank（24）.
6. the hydrogenation reaction feed system of achievable energy regenerating according to claim 5, it is characterized in that：The high pressure point
It is high pressure hot separator or cold high pressure separator from device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886597.3A CN107913645A (en) | 2016-10-11 | 2016-10-11 | A kind of hydrogenation reaction feed system of achievable energy regenerating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886597.3A CN107913645A (en) | 2016-10-11 | 2016-10-11 | A kind of hydrogenation reaction feed system of achievable energy regenerating |
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| CN107913645A true CN107913645A (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610886597.3A Pending CN107913645A (en) | 2016-10-11 | 2016-10-11 | A kind of hydrogenation reaction feed system of achievable energy regenerating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330469A (en) * | 2019-07-27 | 2019-10-15 | 河南心连心化学工业集团股份有限公司 | Energy recycle device and energy reclaiming method in a kind of crude furfuryl alcohol separation process |
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| CN201763614U (en) * | 2010-09-25 | 2011-03-16 | 朱生 | Pitot turbine booster pump |
| CN103939356A (en) * | 2014-05-12 | 2014-07-23 | 上海成峰流体设备有限公司 | Energy recycling booster pump and application thereof |
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| JPS59101539A (en) * | 1982-11-30 | 1984-06-12 | Hino Motors Ltd | Turbosupercharging device |
| EP1930397A1 (en) * | 2006-10-26 | 2008-06-11 | Petrochina Company Limited | Apparatus and method for increasing the concentration of recycle hydrogen in high pressure hydrogenation reactor |
| CN101721951A (en) * | 2009-10-12 | 2010-06-09 | 杨守志 | Energy-saving hydrogenation feeding process |
| CN201763614U (en) * | 2010-09-25 | 2011-03-16 | 朱生 | Pitot turbine booster pump |
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| 杨守智等: "天然气脱硫脱碳富液能量回收方法的研究与选择", 《石油与天然气化工》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330469A (en) * | 2019-07-27 | 2019-10-15 | 河南心连心化学工业集团股份有限公司 | Energy recycle device and energy reclaiming method in a kind of crude furfuryl alcohol separation process |
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Application publication date: 20180417 |