CN107652990A - A kind of pyrolysis oven feed system - Google Patents
A kind of pyrolysis oven feed system Download PDFInfo
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- CN107652990A CN107652990A CN201711002946.1A CN201711002946A CN107652990A CN 107652990 A CN107652990 A CN 107652990A CN 201711002946 A CN201711002946 A CN 201711002946A CN 107652990 A CN107652990 A CN 107652990A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 177
- 230000009466 transformation Effects 0.000 claims abstract description 129
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 88
- 239000000463 material Substances 0.000 claims abstract description 69
- 239000000872 buffer Substances 0.000 claims abstract description 63
- 230000003139 buffering effect Effects 0.000 claims abstract description 46
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 description 11
- 239000003245 coal Substances 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 5
- 101150101019 PI21 gene Proteins 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005007 materials handling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010433 powder painting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B31/00—Charging devices
- C10B31/02—Charging devices for charging vertically
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of pyrolysis oven feed system, charging for high pressure pyrolysis oven, including normal pressure tank, transformation tank, pressure pan and nitrogen buffer tank, the normal pressure material entrance of the normal pressure material outlet connection transformation tank of normal pressure tank, the variable blank holder entrance of the variable blank holder outlet connection pressure pan of transformation tank, the high binder outlet of pressure pan connects the high binder entrance of pyrolysis oven by the first rotatory feeder valve, first buffering entrance of the first buffer outlet connection normal pressure tank of nitrogen buffer tank, second buffering entrance of the second buffer outlet connection transformation tank, 3rd buffering entrance of the 3rd buffer outlet connection pressure pan, 4th buffer outlet connects the 4th buffering entrance of high binder outlet.The feed system of the present invention can be the safe and reliable pressurization of material, realize the continuous operation of pyrolysis oven under high pressure by the cooperation of normal pressure tank, transformation tank, pressure pan.
Description
Technical field
The invention belongs to materials-handling technology field, more particularly to a kind of feed system for high pressure pyrolysis oven.
Background technology
China is a rich coal, oil starvation, the country of few gas, and this will determine China in the master of a very long time energy resource consumption from now on
Will be based on coal resources.However, low-order coal occupies more than 55% in the coal resources in China, contain in middle low-order coal substantial amounts of
Volatile matter, directly burning not only cause energy waste, can also cause environmental pollution.Therefore, the high-efficiency cleaning of middle low-order coal utilizes
Environmental problem can not only be improved, moreover it is possible to create huge economic and social benefits.
Pyrolysis oven is the equipment of low-order coal in currently used processing, and pyrolysis oven generally all can only be in normal pressure or pressure-fired
Under the conditions of run, thus stove shape is big, and single stove disposal ability is low.Want to realize and carry out pyrolytic reaction under high pressure, it is necessary first to solve
Certainly the problem of high pressure charging.
The conventional use of feeding manner of pyrolysis oven is：Feed screw and air-flow conveying.The bearing connection of feed screw
Place's leakage powder amount is big, and environmental protection and safety cannot ensure.During air-flow feeding, because charging rate is fast, into pyrolysis oven after generally stop
Stay the time very short, material can not be properly completed pyrolytic reaction in a short time, thus the yield of oil/gas product can be affected,
During longtime running, economy and earning rate are all poor.It is badly in need of developing a kind of feed arrangement suitable for high pressure pyrolysis oven.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of pyrolysis oven feed system, for the charging of high pressure pyrolysis oven, energy
Enough accurate control feed rates, pipe-line equipment will not be denuded, recovery has used the substantial amounts of dirty nitrogen of discharge, ensured economy and
System run all right.
The present invention provides a kind of pyrolysis oven feed system, for the charging of pyrolysis oven, including：
Normal pressure tank, top are provided with material inlet, and bottom exports provided with normal pressure material, and side wall is provided with the first buffering entrance；
Transformation tank, positioned at the lower section of the normal pressure tank, top is provided with normal pressure material entrance, and bottom exports provided with variable blank holder, side
Wall is provided with the second buffering entrance, and the normal pressure material outlet of the normal pressure tank connects the normal pressure material entrance of the transformation tank；
Pressure pan, positioned at the lower section of the transformation tank, top is provided with variable blank holder entrance, the 3rd buffering entrance, and bottom is provided with
The high binder outlet of multiple back tapers, the variable blank holder outlet of the transformation tank connects the variable blank holder entrance of the pressure pan, described
The high binder outlet of pressure pan connects the high binder entrance of the pyrolysis oven, the high binder outlet by the first rotatory feeder valve
It is provided with the 4th buffering entrance；
Nitrogen buffer tank, provided with the first buffer outlet, the second buffer outlet, the 3rd buffer outlet, the 4th buffer outlet and
Nitrogen inlet, first buffer outlet connect the first buffering entrance of the normal pressure tank, and second buffer outlet connects institute
State the second buffering entrance of transformation tank, the 3rd buffer outlet connects the 3rd buffering entrance of the pressure pan, and the described 4th
4th buffering entrance of the buffer outlet connection high binder outlet；
The connecting line of all parts is provided with control valve.
In some embodiments of the present invention, pyrolysis oven feed system also includes discharge filter and nitrogen storage tank；The change
Tank is pressed to be provided with row's exhaust outlets；The discharge filter is provided with discharge gas entrance, powder outlet and crosses air filtration outlet；The nitrogen
Storage tank was provided with air filtration entrance；The top of the normal pressure tank is provided with powder entrance；Row's exhaust outlets connection institute of the transformation tank
The discharge gas entrance of discharge filter is stated, the powder outlet of the discharge filter is described often by the connection of the second rotatory feeder valve
The powder entrance of tank is pressed, the mistake air filtration outlet of the discharge filter connects the mistake air filtration entrance of the nitrogen storage tank.
As preferred embodiments of the present invention, more sintering metal filter sticks, the sintered gold are provided with the discharge filter
Category filter stick surface spraying has filter membrane.
The pyrolysis oven feed system of the present invention further comprises supercharger；The nitrogen storage tank is provided with nitrogen outlet, described
The nitrogen outlet of nitrogen storage tank connects the air inlet of the supercharger, and the gas outlet of the supercharger connects the nitrogen buffer tank
Nitrogen inlet.
In the following examples of the present invention, return valve is provided between the air inlet of the supercharger and gas outlet.
In some embodiments of the invention, the transformation tank is provided with transformation balance entrance, and the pressure pan is provided with transformation
Equalization vent, the transformation equalization vent connect the transformation balance entrance.
In some embodiments of the invention, the connecting tube between the normal pressure tank, transformation tank, pressure pan and pyrolysis oven
Road is provided with expansion joint.
In some embodiments of the invention, the transformation tank includes the first transformation tank and the second transformation tank；Described first
Transformation tank is connected with the normal pressure tank, pressure pan and nitrogen buffer tank；The second transformation tank and the normal pressure tank, pressure pan and
Nitrogen buffer tank is connected.
In some embodiments of the invention, set on connecting line of first buffer outlet with the first buffering entrance
There is pressure-regulating valve；Low pressure Fluidizer is provided with the normal pressure tank, the low pressure Fluidizer is connected with the described first buffering entrance.
In some embodiments of the invention, high pressure Fluidizer, the high pressure Fluidizer and institute are provided with the transformation tank
State the connection of the second buffering entrance.
Pyrolysis oven feed system provided by the invention, a kind of safe and reliable feeding manner is provided for high pressure pyrolysis oven,
Continuous operation can be achieved；High binder outlet shares a pressure pan, increases the volume for the device for storing high binder；Transformation tank is arranged
The dust-laden nitrogen recycling put utilizes, and cuts operating costs；Nitrogen is filtered using sintering metal filter stick, improves and was vented
The heat resisting and pressure resisting and impact resistance of filter；Passing through the alternate feed of two transformation tanks, it is ensured that material is sufficient in pressure pan,
Ensure the continuity of production.
Brief description of the drawings
Fig. 1 is the schematic diagram of the system of the embodiment of the present invention.
Fig. 2 is the schematic diagram of the control unit of the system of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and examples, the embodiment of the present invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is for illustrative purposes only, rather than limitation of the present invention.
" connection " in the present invention, unless otherwise clear and definite regulation or limit, should broadly understood, can be direct phase
It is connected even or by intermediary.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of pyrolysis oven feed system, for entering for high pressure pyrolysis oven 4
Material, the system include：Normal pressure tank 1, transformation tank 2, pressure pan 3, nitrogen buffer tank 5, discharge filter 6, nitrogen storage tank 7 and supercharging
Machine 8.Fed by the lock hopper of normal pressure-transformation-high pressure, there is provided a kind of safe and reliable material forced feed system, pass through
The cooperation of each control valve and miscellaneous part, realize automatically controlling for charging.
Normal pressure tank 1 is the tank body of closing, is the storage device of material under normal pressure, positioned at the top of feed system.Normal pressure
The top of tank 1 is provided with material inlet and powder entrance, and bottom exports provided with normal pressure material, and side wall is provided with the first buffering entrance.Come
Normal pressure tank 1 is entered by material inlet from the material of upstream, is exported discharge by normal pressure material as needed.
Transformation tank 2 is the tank body of closing, and positioned at the lower section of normal pressure tank 1, the top of transformation tank 2 is provided with normal pressure material entrance, bottom
Exported provided with variable blank holder, side wall is provided with the second buffering entrance, and the normal pressure material of the normal pressure material outlet connection transformation tank of normal pressure tank enters
Mouthful, the material that normal pressure tank 1 is discharged enters transformation tank 2 by normal pressure material entrance.
In embodiments of the present invention, transformation tank 2 includes the first transformation tank 21 and the second transformation tank 22.First transformation tank 21 wraps
Including the first normal pressure material entrance, the outlet of the first variable blank holder, the second buffering entrance A and the second buffering entrance B, the second transformation tank 22 includes
Second normal pressure material entrance, the outlet of the second variable blank holder, the second buffering entrance C and the second buffering entrance D.The normal pressure material of normal pressure tank 1 goes out
Mouth connects the first normal pressure material entrance and the second normal pressure material entrance respectively.
Pressure pan 3 includes the tank body of closing, and positioned at the lower section of transformation tank 2, top is buffered into provided with variable blank holder entrance, the 3rd
Mouthful, bottom is provided with the high binder outlet 31 of multiple back tapers, and the variable blank holder of the variable blank holder outlet connection pressure pan 3 of transformation tank 2 enters
Mouthful, the high binder outlet of pressure pan 3 connects the high binder entrance of pyrolysis oven 4, high binder outlet by the first rotatory feeder valve 32
It is provided with the 4th buffering entrance.
In the present embodiment, pressure pan 3 includes the first variable blank holder entrance and the second variable blank holder entrance, and the of the first transformation tank 21
First variable blank holder entrance of one variable blank holder outlet connection pressure pan 3, the second variable blank holder outlet connection high pressure of the second transformation tank 22
Second variable blank holder entrance of tank 3, the variable blank holder in the first transformation tank 21 and the second transformation tank 22 can be respectively fed to pressure pan 3.
Pressure pan 3 includes three high binder outlet 31, and more high binder outlets 31 can be also set according to actual conditions.Three
Individual high binder outlet 31 shares a tank body, compared with each high binder exports 31 settings, one liftout storehouse, total appearance of tank body
Product is bigger, reduces number of devices and equipment manufacturing costs, advantageously reduces plant investment cost.First rotatory feeder valve 32 is adopted
With VFC, inlet amount can be adjusted according to temperature in pyrolysis oven 4 and the load needed.
Nitrogen buffer tank 5 provides required nitrogen, the source of the gas as each tank pressurising, pressurize for each tank body.Nitrogen buffers
Tank 5 is provided with the first buffer outlet, the second buffer outlet, the 3rd buffer outlet, the 4th buffer outlet and nitrogen inlet, the second buffering
Outlet includes the second buffer outlet A and the second buffer outlet B.First buffering entrance of the first buffer outlet connection normal pressure tank 1, the
Second buffering entrance A of two buffer outlet A the first transformations of connection tanks 21 and the second buffering entrance B, the second buffer outlet B connections the
Second buffering entrance C of two transformation tanks 22 and the second buffering entrance D, the 3rd of the 3rd buffer outlet connection pressure pan 3 is buffered into
Mouthful, the 4th buffer outlet connects the 4th buffering entrance of high binder outlet 31.Pressure regulation is additionally provided with the top of nitrogen buffer tank 5 to go out
Mouthful, the pressure regulation for nitrogen buffer tank 5.
The connecting line of all parts is provided with control valve, needs execution on-off action depending on technique during operation, makes each
Tank connection or mutually isolated, control valve include switch valve, pressure-regulating valve and flow control valve etc..It is provided with and weighs on each tank
Instrument, for measuring the weight of material in each tank.In order to avoid influence of the thermal stress to weighing, in normal pressure tank 1, transformation tank 2, high pressure
Connecting line between tank 3 and pyrolysis oven 4 is provided with expansion joint 9, and expansion joint 9 can offset pipeline etc. because heat caused by thermal expansion should
Power, avoid having an impact weighing instrument measurement.
In order to reclaim dust-laden nitrogen, the also settable discharge filter 6 of system, nitrogen storage tank 7 of the present embodiment.
Discharge filter 6 is provided with discharge gas entrance, powder outlet and crosses air filtration outlet, and discharge gas entrance includes the first discharge
Gas entrance and second row outlet entrance, the first transformation tank 21 are provided with first row exhaust outlets, and the second transformation tank 22 is provided with the
Two row's exhaust outlets.First row exhaust outlets connect with first row outlet entrance, and second row exhaust outlets enter with second row outlet
Mouth connection.When transformation tank 2 needs exhaust, the gas in transformation tank 2 is discharged by arranging exhaust outlets, afterwards into exhaust gas filter
Device 6.That is the gas of the first transformation tank 21 is discharged by first row exhaust outlets, and the gas of the second transformation tank 22 passes through the second discharge
Gas outlet discharge.
More sintering metal filter sticks, the filtering for gas are provided with discharge filter 6.Sintering metal filter stick surface spraying
There is filter membrane, filter membrane with the metal powder painting of metal filter stick same material by forming so that its pore diameter is smaller, improves it
Resistance to abrasion.
Sintering metal filter stick can all filter out solid particle of all particle diameters more than 0.3 micron, the nitrogen after filtering
In solid content be less than 1mg/Nm3.Can avoid glowing etc. the generation of accident using sintering metal filter stick, and plant maintenance amount is small, work
Skill reliability is high.The powder outlet of discharge filter 6 connects the powder entrance of normal pressure tank 1, row by the second rotatory feeder valve 61
The powder being collected into air filter 6 sends back to normal pressure tank 1 with the second rotatory feeder valve 61 again, and for producing, it is former to save production
Material.
Nitrogen storage tank 7 is the storage device of nitrogen, is provided with air filtration entrance and nitrogen outlet, the filtering of discharge filter 6
The mistake air filtration entrance of gas outlet connection nitrogen storage tank 7.Gas after discharge filter 6 filters is available nitrogen, by nitrogen
Gas is passed through nitrogen storage tank 7 and stored.
In order to which the nitrogen in nitrogen storage tank 7 is passed through into nitrogen buffer tank 5, set between nitrogen storage tank 7 and nitrogen buffer tank 5
There is supercharger 8.The air inlet of the nitrogen outlet connection supercharger 8 of nitrogen storage tank 7, the gas outlet connection nitrogen buffering of supercharger 8
The nitrogen inlet of tank 5.Nitrogen in nitrogen storage tank 7 enters nitrogen buffer tank 5 after being pressurizeed by supercharger 8, realizes nitrogen again
Utilize, reduce the supplement of fresh nitrogen.
Nitrogen after filtering enters nitrogen storage tank 7, and because the capacity of pressure pan 3 is seldom, and transformation tank 2 is interval
Property exhaust, in order to prevent supercharger 8 occur surge, damage equipment, nitrogen storage tank 7 be additionally provided with supplement nitrogen inlet 71, it is sustainable
One low-pressure nitrogen is passed through to be supplemented.
Transformation tank 2 is provided with transformation balance entrance, and pressure pan 3 is provided with transformation equalization vent, transformation equalization vent connection transformation
Entrance is balanced, to realize when variable blank holder enters pressure pan 3, the pressure balance between transformation tank 2 and pressure pan 3.In this implementation
In example, the first transformation tank 21 is provided with the first transformation balance entrance, and the second transformation tank 22 is provided with the second transformation balance entrance, pressure pan
3 are provided with the first transformation equalization vent and the second transformation equalization vent, the first transformation equalization vent connect the first transformation balance into
Mouthful, the second transformation equalization vent connects the second transformation balance entrance.
Buffered in the first buffer outlet and first and pressure-regulating valve PV03 is provided with the connecting line of entrance, in normal pressure tank 1
Provided with low pressure Fluidizer, low pressure Fluidizer is connected with the first buffering entrance.During operation, the nitrogen that nitrogen buffer tank 5 is sent out passes through
After pressure-regulating valve PV03 decompressions, low pressure Fluidizer is passed through, the material in the normal pressure material exit of normal pressure tank 1 is fluidized, prevented
Material is compacted in tank, can not blanking, cause pyrolysis oven 4 to stop.
High pressure Fluidizer is provided with transformation tank 2, high pressure Fluidizer is connected with the second buffering entrance.From nitrogen buffer tank 5
High pressure nitrogen each high pressure Fluidizer is sent into after each governor valve control flow, purging fluidisation is carried out to the material in tank, prevented
Material tapering in tank is built bridge because being squeezed, and putty occurs, influences blanking.
Several high-pressure aerated devices are additionally provided with transformation tank 2, for being passed through elevated pressure nitrogen into tank when transformation tank 2 boosts
Gas, pressurising speed is improved, save the pressurising time, ensure system operation.Aerator occurs to lead to during putty in transformation tank 2
Enter high pressure nitrogen and carry out unimpeded, the tank is recovered blanking as early as possible.
Feed system is automatically controlled in order to realize, weighing instrument and pressure transmitter are installed on each tank body, each
Different control valves is set according to demand on individual connecting line.Weighing instrument WI01 is provided with normal pressure tank 1, for monitoring normal pressure tank
Weight of material in 1.Weighing instrument WI21 and pressure transmitter PI21 is provided with the first transformation tank 21, for monitoring the first transformation
The weight and pressure of material in tank 21.Weighing instrument WI22 and pressure transmitter PI22 is provided with the second transformation tank 22, for supervising
Survey the weight and pressure of material in the second transformation tank 22.Weighing instrument WI03 and pressure transmitter PI03 is provided with pressure pan 3, is used
In the weight and pressure of material in monitoring pressure pan 3.Pyrolysis oven 4 is provided with pressure transmitter PI04, monitors the pressure of pyrolysis oven 4
Power.Nitrogen buffer tank 5 is provided with pressure transmitter PI05, monitors the pressure in nitrogen buffer tank 5.
The system of the present embodiment is performed automatically by pre-set programs, without manual operation during normal operation, you can realize transformation
Tank acts from the blanking of trend pressure pan, isolation, pressure release, reception normal pressure tank supplied materials, pressurising, standby etc..
This feed system is designed as normal pressure tank volume：Single transformation tank volume：High pressure tank volume is 4~5:1.2~1.5:2
~2.5, preferably 4：1.2：2.So, (low weight signal is commonly designed after the material in pressure pan 3 triggers low weight signal
The weight for the material contained for the single transformation tank volume less than 1.05 times), the short time is interior by the material in the first transformation tank 21
Pressure pan 3 is all sent into, then it is separated by with pressure pan 3 and left, and is still full material in pressure pan 3.In letting out for the first transformation tank 21
During pressure, material feeding, pressurising, when triggering low weight signal again such as the material in pressure pan 3, the material of the second transformation tank 22 is sent
Pressure pan 3 is removed, then isolates the second transformation tank 22, for the second transformation tank during pressure release, material feeding, pressurising, the first transformation tank 21 is complete
Into pressurising, wait pressure pan 3 to occur blanking after low weight signal again, circulate according to this.
The charging flow of the feed system of the present embodiment is as follows, and the original state of initialization system is：
1. in the operation of the first rotatory feeder valve, in the operation of the second rotatory feeder valve, there is material and with pressure in pressure pan,
Fed to pyrolysis oven.
2. a liang transformation tank has been filled with material, and has boosted to close with high pressure pressure tank.
3. in supercharger operation, pressure is high in nitrogen buffer tank.
4. each valve position is correct.
Blanking：With the charging to pyrolysis oven, the material in pressure pan 3 gradually decreases, as the weighing instrument WI03 of pressure pan
After sending the low signal of weight, flow control valve FV11 and FV12 are opened, the material in the first transformation tank 21 is fluidized.Such as
Fruit pressure transmitter PI21 and PI03 pressure differential≤10kPa, then open switch valve XV12 and XV13, close flow control valve
FV12, the material in the first transformation tank 21 will be fallen under gravity into pressure pan 3.When the weighing instrument of the first transformation tank
After WI21 sends the low signal of weight, closing switch valve XV12 and XV13 and flow control valve FV11, make the first transformation tank 21
Isolate with pressure pan 3.
Pressure release：After switch valve XV12 and XV13 and flow control valve FV11 confirms to close, system presses default pressure release speed,
Pressure-regulating valve PV11, switch valve XV14 are slowly opened, makes the pressure release of the first transformation tank 21.When pressure transmitter PI21 measured values≤
After 0.02MPa, it is believed that the first transformation tank pressure release is completed.Pressure is set to adjust on the pipeline that transformation tank is connected with discharge filter
Valve, pressure at expulsion is can adjust, prevent the excessive damage equipment of tolerance, set switch valve to can ensure that the stabilization of isolation.
Material feeding：Open switch valve XV11 to feed into the first transformation tank 21, when weight of material triggering claims in the first transformation tank
After the high signal of weight instrument WI21 weight, it is believed that the first transformation tank 21 has been filled with material, and closing switch valve XV11 and XV14, pressure are adjusted
Valve PV11 is saved, makes the first transformation tank 21 and normal pressure tank 1, discharge filter 6 is separated by and left.
Pressurising：After first transformation tank 21 is isolated, flow control valve FV11 and FV12 is slowly opened by pre-set programs to
One transformation tank 21, which is passed through high pressure nitrogen, makes its boosting.When the first transformation pressure inside the tank (PI21 monitor values) is close to the internal pressure of pressure pan 3
During power (PI03 monitor values), flow control valve FV12 is closed successively, turns down flow control valve FV11, it is relatively low only to retain one flow
High pressure nitrogen material in transformation tank is fluidized, prevent that putty occurs in transformation tank, influence system operation.
Weighing instrument WI22 and pressure transmitter PI22, the second transformation tank 22 and normal pressure tank 1 are provided with the second transformation tank 22
Connecting pipeline be provided with switch valve XV21, be provided with switch valve XV22 and XV23 between the second transformation tank 22 and pressure pan 3, second
Be provided with flow control valve FV21 and FV22 between transformation tank 22 and nitrogen buffer tank 5, the second transformation tank 22 and discharge filter it
Between be provided with pressure-regulating valve PV21 and switch valve XV24.
The process of blanking → pressure release → material feeding → pressurising of second transformation tank 22 is similar to the first transformation tank 21.Become first
During pressing tank 21 pressure release, material feeding, pressurising, as there is low weight signal again in pressure pan 3, then from the second transformation tank 22 to pressure pan
3 blankings.
When the weight of material that the weighing instrument WI01 of normal pressure tank is monitored in normal pressure tank is low, by the material inlet of normal pressure tank 1
Fed to normal pressure tank, stop charging after reaching predetermined weight.First buffer mouth of normal pressure tank 1 and the connecting tube of nitrogen buffer tank 5
Road is provided with pressure-regulating valve PV03 and flow control valve FV04, for controlling pressure and flow into the nitrogen of normal pressure tank 1.
In the present embodiment, divide on the pipeline that the 4th buffering entrance of three high binder outlet 31 is connected with nitrogen buffer tank 5
Not She You flow control valve FV01, FV02, FV03, control nitrogen purging fluidisation is carried out to the material that high binder exports, prevent thing
Material tapering in tank is built bridge because being squeezed, and putty occurs, influences blanking.
Pressure-regulating valve PV01 is provided with the 3rd buffering entrance and the connecting line of nitrogen buffer tank 5, as intake valve, the
Three buffering entrances are also associated with pressure-regulating valve PV02, as atmospheric valve.Pressure transmitter PI03 signal control pressure regulation
Valve PV01 and PV02, when pressure inside the tank is less than setting value, atmospheric valve is closed automatically, opens intake valve；Conversely, work as pressure inside the tank
During higher than setting value, atmospheric valve is automatically opened up, closes intake valve.The control method is simple and practical, than the unity loop control of routine
A few transmitter, has saved cost of investment.
Pressure transmitter PI04 is installed, for monitoring the pressure in pyrolysis oven 4 on pyrolysis oven 4.
The pressure regulation of nitrogen buffer tank 5, which exports, passes through pressure-regulating valve PV04 and ft connection, closing presure under usual state
Regulating valve PV04, when needing that the pressure of nitrogen buffer tank 5 is adjusted or is vented, open pressure-regulating valve PV04.
First transformation tank 21 and the nitrogen containing powder of the pressure release of the second transformation tank 22 discharge enter discharge filter 6, pass through sintering
After the filtering of metal filter stick, powder sends back to normal pressure tank 1 by the second rotatory feeder valve 61, and for producing, the nitrogen after filtering is passed through
Nitrogen storage tank 7.
Switch valve XV81 is provided with the gas outlet of supercharger 8, return valve is provided between the air inlet of supercharger 8 and gas outlet
XV82, return valve XV82, closing switch valve XV81 are automatically opened up when 8 deficiency of air of supercharger, prevent equipment surge from damaging.
It should be noted that each embodiment above by reference to described by accompanying drawing only limits this to illustrate rather than
The scope of invention, it will be understood by those within the art that, it is right under the premise without departing from the spirit and scope of the present invention
The modification or equivalent substitution that the present invention is carried out, all should cover within the scope of the present invention.It is in addition, signified unless the context
Outside, the word occurred in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can combine any other embodiment all or part of use.
Claims (10)
1. a kind of pyrolysis oven feed system, the charging for pyrolysis oven, it is characterised in that including：
Normal pressure tank, top are provided with material inlet, and bottom exports provided with normal pressure material, and side wall is provided with the first buffering entrance；
Transformation tank, positioned at the lower section of the normal pressure tank, top is provided with normal pressure material entrance, and bottom exports provided with variable blank holder, in side wall
Provided with the second buffering entrance, the normal pressure material outlet of the normal pressure tank connects the normal pressure material entrance of the transformation tank；
Pressure pan, positioned at the lower section of the transformation tank, top is provided with variable blank holder entrance, the 3rd buffering entrance, and bottom is provided with multiple
The high binder outlet of back taper, the variable blank holder outlet of the transformation tank connect the variable blank holder entrance of the pressure pan, the high pressure
The high binder outlet of tank connects the high binder entrance of the pyrolysis oven by the first rotatory feeder valve, is set in the high binder outlet
There is the 4th buffering entrance；
Nitrogen buffer tank, provided with the first buffer outlet, the second buffer outlet, the 3rd buffer outlet, the 4th buffer outlet and nitrogen
Entrance, first buffer outlet connect the first buffering entrance of the normal pressure tank, and second buffer outlet connects the change
The second buffering entrance of tank is pressed, the 3rd buffer outlet connects the 3rd buffering entrance of the pressure pan, the 4th buffering
4th buffering entrance of the outlet connection high binder outlet；
The connecting line of all parts is provided with control valve.
2. pyrolysis oven feed system according to claim 1, it is characterised in that also including discharge filter and nitrogen storage
Tank；
The transformation tank is provided with row's exhaust outlets；
The discharge filter is provided with discharge gas entrance, powder outlet and crosses air filtration outlet；
The nitrogen storage tank was provided with air filtration entrance；
The top of the normal pressure tank is provided with powder entrance；
Row's exhaust outlets of the transformation tank connect the discharge gas entrance of the discharge filter, the powder of the discharge filter
Outlet connects the powder entrance of the normal pressure tank, the mistake air filtration outlet connection of the discharge filter by the second rotatory feeder valve
The mistake air filtration entrance of the nitrogen storage tank.
3. pyrolysis oven feed system according to claim 2, it is characterised in that more burnings are provided with the discharge filter
Metal filter stick is tied, the sintering metal filter stick surface spraying has filter membrane.
4. pyrolysis oven feed system according to claim 2, it is characterised in that further comprise supercharger；
The nitrogen storage tank is provided with nitrogen outlet, and the nitrogen outlet of the nitrogen storage tank connects the air inlet of the supercharger, institute
The gas outlet for stating supercharger connects the nitrogen inlet of the nitrogen buffer tank.
5. pyrolysis oven feed system according to claim 4, it is characterised in that the air inlet of the supercharger and gas outlet
Between be provided with return valve.
6. pyrolysis oven feed system according to claim 1, it is characterised in that the transformation tank provided with transformation balance into
Mouthful, the pressure pan is provided with transformation equalization vent, and the transformation equalization vent connects the transformation balance entrance.
7. pyrolysis oven feed system according to claim 1, it is characterised in that in the normal pressure tank, transformation tank, pressure pan
Connecting line between pyrolysis oven is provided with expansion joint.
8. pyrolysis oven feed system according to claim 1, it is characterised in that the transformation tank include the first transformation tank and
Second transformation tank；
The first transformation tank is connected with the normal pressure tank, pressure pan and nitrogen buffer tank；
The second transformation tank is connected with the normal pressure tank, pressure pan and nitrogen buffer tank.
9. pyrolysis oven feed system according to claim 1, it is characterised in that slow in first buffer outlet and first
The connecting line for pouring mouth is provided with pressure-regulating valve；
Low pressure Fluidizer is provided with the normal pressure tank, the low pressure Fluidizer is connected with the described first buffering entrance.
10. pyrolysis oven feed system according to claim 1, it is characterised in that high pressure is provided with the transformation tank and is fluidized
Device, the high pressure Fluidizer are connected with the described second buffering entrance.
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| CN201711002946.1A CN107652990A (en) | 2017-10-24 | 2017-10-24 | A kind of pyrolysis oven feed system |
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| CN108408414A (en) * | 2018-03-19 | 2018-08-17 | 中冶华天南京工程技术有限公司 | Novel powder material and the uniform transport system of tank |
| CN108504393A (en) * | 2018-06-01 | 2018-09-07 | 山东明泉新材料科技有限公司 | Energy-efficient fine coal pressurization conveying system |
| CN108726832A (en) * | 2018-06-01 | 2018-11-02 | 大庆高新区百世环保科技开发有限公司 | The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID |
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