CN208275371U - A kind of hydric safe feeding mechanism - Google Patents

Abstract

The utility model discloses a kind of hydric safe feeding mechanisms, including intake pipe connection, three-way valve, main gas dry tank, No.1 check valve, No. two check valves, No. three check valves, pressure-regulating valve, No. four check valves, preheating chamber, heating coil, flow control valve, expanded rubber air bag, secondary gas drying chamber, the intake pipe connection is sequentially connected the intake interface of main gas dry tank, pressure-regulating valve, heating coil, flow control valve and reaction kettle along the gas supply direction of hydrogen；The main gas dry tank is in parallel with secondary gas drying chamber.This is practical can be dried the hydrogen being supplied in reaction kettle and the pre-heat treatment, the phenomenon that cold wet hydrogen causes reactor temperature to fluctuate is added to reduce, so that temperature fluctuation is varied down in tolerance interval.This is practical by the way that the drying device that can switch is arranged, and ensure that the continuity of equipment work.This practical heating device can be arranged far from hydrogen supply line simultaneously, improve safety.

Description

A kind of hydric safe feeding mechanism

Technical field

The utility model relates to hydrogenation plant in heavy oil catalytic cracking process, specifically a kind of hydric safe feeding mechanism.

Background technique

Under normal temperature and pressure, hydrogen is that one kind is easily burnt, colorless and transparent, odorless, tasteless gas.Hydrogen is in the world The smallest gas of the density known.It in the catalytic cracking reaction for carrying out heavy oil, generally requires to carry out to add hydrogen, being hydrocracked is catalysis The improvement of cracking technology.Catalytic cracking is carried out under hydro condition, be can inhibit the dehydrogenative condensation reaction occurred when catalytic cracking, is kept away Exempt from the generation of coke.

And when equipment work at present, the hydrogen for adding hydrogen pipeline to add does not have humidity and temperature control system, causes some wet It spends big and too low temperature gas and is supplied to the problem for causing temperature fluctuation big in reaction kettle, seriously affect the efficiency of reaction.

Utility model content

In order to solve the problems in the existing technology, the purpose of the utility model is to provide a kind of supplies of hydric safe to fill It sets.

In order to achieve the above-mentioned object of the invention, the utility model uses technical solution as described below:

A kind of hydric safe feeding mechanism, including intake pipe connection, three-way valve, main gas dry tank, No.1 check valve, No. two check valves, No. three check valves, pressure-regulating valve, No. four check valves, preheating chamber, heating coil, flow control valve, expansion rubber Glue air bag, secondary gas drying chamber, the intake pipe connection are sequentially connected main gas dry tank, pressure along the gas supply direction of hydrogen Regulating valve, heating coil, flow control valve and reaction kettle intake interface；The main gas dry tank and secondary gas drying chamber Parallel connection, and the air inlet port of secondary gas drying chamber is connected between intake pipe connection and main gas dry tank by three-way valve On pipeline, and the gas outlet of secondary gas drying chamber is connected to the pipe between main gas dry tank and pressure-regulating valve by tee tube On road, and No.1 check valve, secondary gas drying chamber are connected between the corresponding tee tube of secondary gas drying chamber and main gas dry tank Gas outlet connect No. two check valves, wherein No.1 check valve flows out the hydrogen of winner's gas dry tank gas outlet unidirectionally, two Number check valve flows out the hydrogen of secondary gas drying chamber gas outlet unidirectionally；The air inlet and outlet end mouth of the pressure-regulating valve by pair The tee tube answered is in parallel with the air inlet/outlet of expanded rubber air bag, expanded rubber air bag air inlet and pressure-regulating valve air outlet Between pipeline on connect No. four check valves, on the pipeline between expanded rubber air bag gas outlet and pressure-regulating valve air inlet port No. three check valves are connected, No. four check valves flow the hydrogen at pressure-regulating valve air outlet to expanded rubber air bag, and No. three check valves flow the hydrogen at expanded rubber air bag gas outlet to pressure-regulating valve air inlet port；The heating coil It is arranged in preheating chamber.

Further, the preheating chamber is connected with the both ends port sealing of heating coil, and preheating chamber is connected by two root canal roads The oil inlet and outlet of logical hot oil tank, wherein connects circulating pump, hot oil on the root canal road between the oil outlet and preheating chamber of hot oil tank Electric heater unit is installed in tank.

Further, the top of the main gas dry tank and secondary gas drying chamber offers screw thread mouth, screw thread mouth spiral shell Line connects lid, is connected between lid and screw thread mouth by sealing ring, and the medial surface of lid is formed with internal thread hole, internal screw thread Hole is threadedly coupled the screw thread of mesh enclosure port, desiccant-filled in mesh enclosure.

Further, the main gas dry tank and secondary gas drying chamber are stainless cylinder of steel.

Further, the expanded rubber air bag with a thickness of 3-5mm.

Due to the adoption of the above technical scheme, the utility model has following superiority: originally practical to react being supplied to Hydrogen in kettle is dried and the pre-heat treatment, and the phenomenon that cold wet hydrogen causes reactor temperature to fluctuate is added to reduce, So that temperature fluctuation is varied down in tolerance interval.This practical expanded rubber air bag that is added in a device is for avoiding warm The pressure damage connecting interface of middle cataclysm improves safety, reduces security risk.This is practical by the way that the drying that can switch is arranged Device ensure that the continuity of equipment work.This practical heating device can be arranged far from hydrogen supply line simultaneously, improve Safety.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of hydric safe feeding mechanism.

Fig. 2 is the structural schematic diagram of main gas dry tank and secondary gas drying chamber in hydric safe feeding mechanism.

In figure: 1, intake pipe connection；2, three-way valve；3, main gas dry tank；4, No.1 check valve；5, No. two it is unidirectional Valve；6, No. three check valves；7, pressure-regulating valve；8, No. four check valves；9, preheating chamber；10, heating coil；11, flow control valve； 12, circulating pump；13, hot oil tank；14, electric heater unit；15, expanded rubber air bag；16, secondary gas drying chamber；17, mesh enclosure；18, Lid.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.

In conjunction with Fig. 1~2, in the utility model embodiment, a kind of hydric safe feeding mechanism, including intake pipe connection 1, three Port valve door 2, main gas dry tank 3,7, No. four check valve 5, three of No.1 check valve 4, two check valve 6, pressure-regulating valve lists To valve 8, preheating chamber 9, heating coil 10, flow control valve 11, circulating pump 12, hot oil tank 13, electric heater unit 14, expanded rubber Air bag 15, secondary gas drying chamber 16, mesh enclosure 17 and lid 18, the intake pipe connection 1 successively connect along the gas supply direction of hydrogen Connect the intake interface of main gas dry tank 3, pressure-regulating valve 7, heating coil 10, flow control valve 11 and reaction kettle.

The main gas dry tank 3 is in parallel with secondary gas drying chamber 16, and the air inlet port of secondary gas drying chamber 16 passes through Three-way valve 2 is connected on the pipeline between intake pipe connection 1 and main gas dry tank 3, and the outlet of secondary gas drying chamber 16 Mouth is connected on the pipeline between main gas dry tank 3 and pressure-regulating valve 7 by tee tube, and secondary gas drying chamber 16 is corresponding Tee tube and main gas dry tank 3 between connect No.1 check valve 4, the gas outlet of secondary gas drying chamber 16 connect No. two it is unidirectional Valve 5, wherein No.1 check valve 4 flows out the hydrogen of 3 gas outlet of winner's gas dry tank unidirectionally, and No. two check valves 5 make secondary gas The hydrogen of 16 gas outlet of body drying chamber unidirectionally flows out, so that can be between main gas dry tank 3 and secondary gas drying chamber 16 Use is switched over by three-way valve 2, main gas dry tank 3 and the desiccant in secondary gas drying chamber 16 is conveniently replaceable, protects The degree of drying for demonstrate,proving hydrogen supply is stablized.

The top of the main gas dry tank 3 and secondary gas drying chamber 16 offers screw thread mouth, and screw thread mouth is threadedly coupled Lid 18 is connected between lid 18 and screw thread mouth by sealing ring, and the medial surface of lid 18 is formed with internal thread hole, internal screw thread Hole is threadedly coupled the screw thread of 17 port of mesh enclosure, desiccant-filled in mesh enclosure 17, so as to carry out to the hydrogen flowed into tank body It is dry, avoid the excessive influence catalytic cracking reaction of humidity.

The main gas dry tank 3 and secondary gas drying chamber 16 are stainless cylinder of steel, sturdy and durable.

The air inlet and outlet end mouth of the pressure-regulating valve 7 passes through the air inlet/outlet of corresponding tee tube and expanded rubber air bag 15 Parallel connection connects No. four check valves 8 on the pipeline between 7 air outlet of 15 air inlet of expanded rubber air bag and pressure-regulating valve, swollen No. three check valves 6, No. four check valves are connected on pipeline between swollen 15 gas outlet of rubber pneumatic bag and 7 air inlet port of pressure-regulating valve 8 flow the hydrogen at 7 air outlet of pressure-regulating valve to expanded rubber air bag 15, and No. three check valves 6 to expand rubber Hydrogen at 15 gas outlet of glue air bag is flowed to 7 air inlet port of pressure-regulating valve, is used to put down using expanded rubber air bag 15 herein The pressure that hydrogen expanded by heating generates in weighing apparatus heating coil 10 being capable of excess pressure when swell increment is excessive in heating coil 10 Hydrogen send back to pressure-regulating valve 7 before, by expanded rubber air bag 15 can effectively alleviate hydrogen heating expansion to valve With the impact force of interface, safety is improved.

The expanded rubber air bag 15 with a thickness of 3-5mm.

The heating coil 10 is arranged in preheating chamber 9, and preheating chamber 9 is connected with the both ends port sealing of heating coil 10, Preheating chamber 9 is connected to the oil inlet and outlet of hot oil tank 13 by two root canal roads, wherein between the oil outlet of hot oil tank 13 and preheating chamber 9 Circulating pump 12 is connected on one root canal road, is realized and is recycled pre- hot hydrogen, guarantees that hydrogen is supplied to the inside temperature for being in pyroreaction kettle Degree fluctuation reduces, and electric heater unit 14 is installed in hot oil tank 13, the oil stored in hot oil tank 13 is transformer oil, i.e., non-flammable Oil guarantees safety, originally practical that hot oil tank 13 can be arranged far from preheating chamber 9, avoids security risk caused by electric appliance.

Claims (5)

1. a kind of hydric safe feeding mechanism, including intake pipe connection (1), three-way valve (2), main gas dry tank (3), No.1 Check valve (4), No. two check valves (5), No. three check valves (6), pressure-regulating valve (7), No. four check valves (8), preheating chamber (9), Heating coil (10), flow control valve (11), expanded rubber air bag (15) and secondary gas drying chamber (16), which is characterized in that institute It states intake pipe connection (1) and is sequentially connected main gas dry tank (3), pressure-regulating valve (7), heating dish along the gas supply direction of hydrogen Manage the intake interface of (10), flow control valve (11) and reaction kettle；The main gas dry tank (3) and secondary gas drying chamber (16) in parallel, and the air inlet port of secondary gas drying chamber (16) is connected to intake pipe connection (1) and main gas by three-way valve (2) On pipeline between body drying chamber (3), and the gas outlet of secondary gas drying chamber (16) is connected to main gas dry by tee tube On pipeline between tank (3) and pressure-regulating valve (7), and the corresponding tee tube of secondary gas drying chamber (16) and main gas dry tank (3) No.1 check valve (4) are connected between, the gas outlet of secondary gas drying chamber (16) connects No. two check valves (5), wherein No.1 list Flow out the hydrogen of winner gas dry tank (3) gas outlet unidirectionally to valve (4), No. two check valves (5) make secondary gas drying chamber (16) hydrogen of gas outlet unidirectionally flows out；The air inlet and outlet end mouth of the pressure-regulating valve (7) passes through corresponding tee tube and expansion The air inlet/outlet of rubber pneumatic bag (15) is in parallel, between expanded rubber air bag (15) air inlet and pressure-regulating valve (7) air outlet Pipeline on connect No. four check valves (8), between expanded rubber air bag (15) gas outlet and pressure-regulating valve (7) air inlet port No. three check valves (6) are connected on pipeline, No. four check valves (8) make the hydrogen at pressure-regulating valve (7) air outlet to expansion Rubber pneumatic bag (15) flowing, and No. three check valves (6) adjust the hydrogen at expanded rubber air bag (15) gas outlet to pressure The flowing of valve (7) air inlet port；Heating coil (10) setting is in preheating chamber (9).

2. hydric safe feeding mechanism according to claim 1, which is characterized in that the preheating chamber (9) and heating coil (10) both ends port sealing connection, preheating chamber (9) are connected to the oil inlet and outlet of hot oil tank (13) by two root canal roads, wherein hot oil Circulating pump (12) are connected on a root canal road between the oil outlet and preheating chamber (9) of tank (13), installation electricity adds in hot oil tank (13) Thermal (14).

3. hydric safe feeding mechanism according to claim 1, which is characterized in that the main gas dry tank (3) and pair The top of gas dry tank (16) offers screw thread mouth, and screw thread mouth is threadedly coupled lid (18), lid (18) and screw thread mouth it Between connected by sealing ring, and the medial surface of lid (18) is formed with internal thread hole, and internal thread hole is threadedly coupled mesh enclosure (17) end Mouthful screw thread, it is desiccant-filled in mesh enclosure (17).

4. hydric safe feeding mechanism according to claim 1 or 3, which is characterized in that the main gas dry tank (3) with Secondary gas drying chamber (16) is stainless cylinder of steel.

5. hydric safe feeding mechanism according to claim 1, which is characterized in that the thickness of the expanded rubber air bag (15) Degree is 3-5mm.