CN106906005A - Pulverized coal pressurized conveying device and method - Google Patents
Pulverized coal pressurized conveying device and method Download PDFInfo
- Publication number
- CN106906005A CN106906005A CN201710249990.6A CN201710249990A CN106906005A CN 106906005 A CN106906005 A CN 106906005A CN 201710249990 A CN201710249990 A CN 201710249990A CN 106906005 A CN106906005 A CN 106906005A
- Authority
- CN
- China
- Prior art keywords
- fine coal
- stop valve
- lock hopper
- pressure
- pressurising
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 398
- 238000000034 method Methods 0.000 title claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 238000002309 gasification Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 28
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 14
- 239000001569 carbon dioxide Substances 0.000 abstract description 14
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 4
- 238000004080 punching Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a pulverized coal pressurizing and conveying device which is used for solving the problem of high emission of nitrogen or carbon dioxide in the processes of pulverized coal lock bucket pressurization and pressure release. The pulverized coal pressurizing and conveying device comprises a pulverized coal filter, a pulverized coal storage tank, a pulverized coal locking bucket, a pulverized coal feeding tank, a locking bucket filter and a multi-stage pressure equalizing tank which are vertically arranged; the pulverized coal filter, the pulverized coal storage tank, the pulverized coal locking hopper and the pulverized coal feeding tank are sequentially connected vertically and downwards, and related valves are arranged between every two pulverized coal locking hoppers which are communicated with the pulverized coal feeding tank through a balanced pipeline cut-off valve; the external high-pressure air inlet is respectively provided with a pulverized coal locking bucket and a pulverized coal feeding tank; the pressure charging port and the pressure releasing port of each stage of pressure equalizing tank are respectively connected with the lock bucket filter through a valve, the pressure releasing port of each stage of pressure equalizing tank is also connected with an inflation flute pipe through an inflation cone of the valve and the pulverized coal lock bucket, and the lock bucket filter is also connected with the pulverized coal filter through a valve. The pulverized coal pressurizing and conveying device is small in nitrogen or carbon dioxide consumption and emission and environment-friendly.
Description
Technical field
Coal Gasification Technology field of the present invention, particularly relates to a kind of fine coal pressure conveyer device and method.
Background technology
With expanding economy, the comprehensive utilization of coal increasingly attracts attention.It is very fast in the development of China for Coal Chemical Industry
Speed, coal liquifaction (coal direct liquefaction, indirect liquefaction), coal-to-olefin (MTO, MTP), coal aromatic hydrocarbons, natural gas from coal, coal second
Glycol, coal derived DME etc., have obtained important achievement.In addition to coal direct liquefaction, Modern Coal-based Chemical industrial chain is nearly all
It is technique source with Coal Gasification.Therefore, Coal Gasification Technology is the basal core of Modern Coal-based Chemical.Powdered coal pressuring gasified is a kind of
Important Coal Gasification Technology.
In recent years, persistently there is wide range of haze weather in China, and the concern that atmospheric environment triggers increasingly heats up.With shell,
GSP and the gasifying powder coal device fine coal that space flight stove is representative pressurize and supply unit needs greatly in fine coal pressurization and course of conveying
The gas (nitrogen or carbon dioxide) of amount, the gas flow in being released to air during the pressurization and pressure release accounts for total gas
The 40% of amount.The gas being released in air not only consumes substantial amounts of energy, and atmospheric environment brings certain pollution, special
It is not when pressurization and pumped (conveying) medium are carbon dioxide, to discharging substantial amounts of greenhouse gases in air.
The content of the invention
The present invention provides a kind of fine coal pressure conveyer device and method, for solving coal gasification apparatus fine coal pressurized delivered mistake
Highly energy-consuming and environmental issue in journey, specifically address the pressurization of fine coal lock hopper and nitrogen in pressure leak process or carbon dioxide maximum discharge and ask
Topic.
A kind of fine coal pressure conveyer device that the present invention is provided, including fine coal filter, fine coal basin, the powder being vertically arranged
Coal lock hopper, fine coal feedstock vessel, lock hopper filter and one-level equalizer tank are to N grades of equalizer tank；Brought out under the fine coal filter
Mouthful it is connected with the upper end feeding mouth of the fine coal basin by rotary discharge valve, the lower end discharging opening of fine coal basin passes sequentially through the
After one fine coal blanking stop valve, the second fine coal blanking stop valve and the fine coal lock hopper the connection of upper end feeding mouth, the fine coal
The lower end discharging opening of lock hopper is passed sequentially through after the 3rd fine coal blanking stop valve, the 4th fine coal blanking stop valve and fine coal feed
The upper end feeding mouth connection of tank, the lower end discharging opening of the fine coal feedstock vessel is connected by fine coal pipeline with outside gasification furnace, institute
Fine coal lock hopper is stated also to be connected with the fine coal feedstock vessel by balancing pipeline stop valve；External high pressure air inlet passes sequentially through
One pressurising stop valve, the second pressurising stop valve are connected with the air filling cone of the fine coal lock hopper, and external high pressure air inlet also leads to successively
Cross the first pressurising stop valve, the 3rd pressurising stop valve to be connected with the inflation flute pipe of the fine coal lock hopper, external high pressure air inlet leads to
The 4th pressurising stop valve is crossed to be connected with the fine coal feedstock vessel；The fine coal lock hopper top is also by fine coal blanking stop valve and lock
Struggle against the first interface connection of filter, and the pressurising mouthful of M grade equalizer tank passes through that M presses stop valve and the lock hopper filter
Two interfaces are connected, and the M grades of pressure relief opening of equalizer tank is connected by M pressure releases stop valve with the first end of the 5th pressurising stop valve, the
Second end of five pressurising stop valves is connected to the second interface of the lock hopper filter, the 5th pressurising by the 6th pressurising stop valve
Second end of stop valve is also communicated on the connecting line between the first pressurising stop valve and the second pressurising stop valve；It is described
Fine coal lock hopper is also connected by lock hopper pressure release stop valve with fine coal filter；The second interface of the lock hopper filter is also led to successively
Emptying stop valve, the 3rd pressure-regulating valve is crossed to be connected with the fine coal filter；The tapering of the fine coal basin and the powder
The low-pressure admission mouthful for being input into outer low pressure nitrogen is additionally provided between coal basin and the first fine coal blanking stop valve；Wherein, M
=1 ..., N, N are the number of equalizer tank.
In a preferred embodiment, it is also connected between the air filling cone of the second pressurising stop valve and the fine coal lock hopper
There is first pressure regulating valve, the second pressure is also associated between the 3rd pressurising stop valve and the inflation flute pipe of the fine coal lock hopper
Force regulating valve, the 4th pressure-regulating valve is also associated between the 4th pressurising stop valve and the fine coal feedstock vessel.
In a preferred embodiment, it is also associated with for balancing in the two between the fine coal filter and fine coal basin
The balance pipe of pressure.
In a preferred embodiment, the N=4.
The present invention also provides any of the above-described kind of application method of fine coal pressure conveyer device, including：
Fine coal lock hopper blowdown step；
Fine coal basin is to fine coal lock hopper blanking step；
Fine coal lock hopper pressurising step；
To fine coal feedstock vessel blanking step, the fine coal lock hopper is returned fine coal lock hopper again after being finished to fine coal feedstock vessel blanking
Perform the fine coal lock hopper blowdown step.
In a preferred embodiment, the fine coal lock hopper blowdown step includes：
Close the first pressurising stop valve, the second pressurising stop valve, the 3rd pressurising stop valve, the 5th pressurising stop valve, the 6th
Pressurising stop valve, the 3rd fine coal blanking stop valve, the 4th fine coal blanking stop valve, balance pipeline stop valve, first to N are pressed
Stop valve, first to N pressure releases stop valve, lock hopper pressure release stop valve, the first fine coal blanking stop valve, the second fine coal blanking cut-out
Valve, emptying stop valve；
Open M and press stop valve, the gases at high pressure in fine coal lock hopper is entered M grades of equalizer tank by lock hopper filter,
M is closed after to fine coal lock hopper and M grades of equalizer tank pressure balance press stop valve；Wherein, the initial value of M is 1；
Judge whether M is equal to N, if so, then performing next step, otherwise make M=M+1 and return to execution previous step；Its
In, N is the quantity of equalizer tank；
Lock hopper pressure release stop valve is opened so that remaining gas is by lock hopper pressure release stop valve and fine coal mistake in fine coal lock hopper
Filter is drained into air.
In a preferred embodiment, the fine coal basin includes to fine coal lock hopper blanking step：
Lock hopper pressure release stop valve, the first fine coal blanking stop valve, the second fine coal blanking stop valve are opened, so that fine coal basin
Interior fine coal under gravity blanking to fine coal lock hopper；
Fine coal lock hopper is full of closing lock hopper pressure release stop valve, the first fine coal blanking stop valve, the second fine coal blanking after fine coal
Stop valve.
In a preferred embodiment, the fine coal lock hopper pressurising step includes：
Open the 5th pressurising stop valve, the 6th pressurising stop valve；
Open K pressure releases stop valve so that in K grades of equalizer tank gas by lock hopper filter to fine coal lock hopper pressurising, treat K
K pressure release stop valves are closed after level equalizer tank and fine coal lock hopper pressure balance；The initial value of K is N；
Judge whether K is equal to N1, if so, then performing next step, otherwise make K=K-1 and return to execution previous step；Its
In, N1 is to specify positive integer and 1≤N1≤N；
Close the 6th pressurising stop valve；
The second pressurising stop valve, the 3rd pressurising stop valve are opened, and makes first pressure regulating valve and second pressure regulating valve
Switch to MANUAL CONTROL mode；
Open L pressure releases stop valve so that in L grades of equalizer tank gas respectively through fine coal lock hopper air filling cone and inflation flute
Pipe to fine coal lock hopper pressurising, after closing L pressure release stop valves after L grades of equalizer tank and fine coal lock hopper pressure balance；The initial value of L is
N1-1；
Judge whether L is equal to 1, if so, then performing next step, otherwise make L=L-1 and return to execution previous step；
Close the 5th pressurising stop valve；
Open the first pressurising stop valve, the gases at high pressure of external high pressure air inlet respectively by the air filling cone of fine coal lock hopper and
Inflation flute pipe is to fine coal lock hopper pressurising；
The second pressurising stop valve and first pressure regulating valve are closed after waiting scheduled duration, and opens emptying stop valve, made
3rd pressure-regulating valve throws automatic control mode；
After fine coal lock hopper and fine coal feedstock vessel pressure differential are less than predetermined threshold, close emptying stop valve and the 3rd pressure is adjusted
Section valve, and open balance pipeline stop valve；
When fine coal lock hopper and after fine coal feedstock vessel pressure balance, the first pressurising stop valve, the 3rd pressurising stop valve, the are closed
Two pressure-regulating valves.
In a preferred embodiment, the fine coal lock hopper includes to fine coal feedstock vessel blanking step：
When fine coal feedstock vessel is in predetermined low material position, opens the 3rd fine coal blanking stop valve and the 4th fine coal blanking is cut
Disconnected valve, so that fine coal is from the blanking of fine coal lock hopper to fine coal feedstock vessel；
When the fine coal whole blanking in fine coal lock hopper is finished or fine coal feedstock vessel is in predetermined high charge level, the 3rd powder is closed
Coal blanking stop valve, the 4th fine coal blanking stop valve, balance pipeline stop valve.
In a preferred embodiment, the predetermined threshold is 20KPa.
Above-mentioned technical proposal of the invention has the beneficial effect that：
In such scheme, nitrogen or carbon dioxide in fine coal pressurization and course of conveying are reduced by setting several equalizer tanks
Discharge, and first by the gas in several equalizer tanks during pressurization, fine coal is locked by gases at high pressure then
Bucket carries out pressurising, can make nitrogen or carbon dioxide usage amount and discharge capacity is small, environment-friendly, economically feasible.
Brief description of the drawings
A kind of fine coal pressure conveyer device structural representation that Fig. 1 is provided for the present invention；
Fig. 2 is the application method flow chart of fine coal pressure conveyer device provided in an embodiment of the present invention；
Fig. 3 is the specific implementation method flow chart of step S21；
Fig. 4 is the specific implementation method flow chart of step S22；
Fig. 5 is the specific implementation method flow chart of step S23；
Fig. 6 is the specific implementation method flow chart of step S24；
[description of reference numerals]
1st, balance pipe 2, the first punching press pipeline 3, the second punching press pipeline
101st, fine coal filter 102, fine coal basin 103, fine coal lock hopper
104th, fine coal feedstock vessel 105, lock hopper filter
XV-01, the first pressurising stop valve XV-02, the second pressurising stop valve
XV-03, the 3rd pressurising stop valve XV-04, rotary discharge valve
XV-05, lock hopper pressure release stop valve XV-06, the first fine coal blanking stop valve
XV-07, the second fine coal blanking stop valve XV-08, the 3rd fine coal blanking stop valve
XV-09, the 4th fine coal blanking stop valve XV-10, balance pipeline stop valve
XV-11, emptying stop valve XV-12, first press stop valve
XV-13, second press stop valve XV-14, the 3rd to press stop valve
XV-15, the 4th press stop valve XV-16, the first pressure release stop valve
XV-17, the second pressure release stop valve XV-18, the 3rd pressure release stop valve
XV-19, the 4th pressure release stop valve XV-20, the 5th pressurising stop valve
XV-21, the 6th pressurising stop valve XV-22, the 4th pressurising stop valve
XV-23, fine coal blanking stop valve PV-01, first pressure regulating valve
PV-02, second pressure regulating valve PV-03, the 3rd pressure-regulating valve
PV-04, the 4th pressure-regulating valve
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
A kind of fine coal pressure conveyer device structural representation that Fig. 1 is provided for the present invention, as shown in fig. 1, the device bag
Include fine coal filter 101, fine coal basin 102, fine coal lock hopper 103, fine coal feedstock vessel 104, the lock hopper filter 105 being vertically arranged
And one-level equalizer tank is to N grades of equalizer tank.Preferably, the number N=4 of equalizer tank, for convenience of representing in Fig. 1, has only drawn one-level
Equalizer tank, two grades of equalizer tanks, three-level equalizer tank and level Four equalizer tanks totally 4 equalizer tanks.
In Fig. 1, the lower end outlet of fine coal filter 101 is entered by rotary discharge valve XV-04 with the upper end of fine coal basin 102
Material mouth is connected, and the lower end discharging opening of fine coal basin 102 passes sequentially through the first fine coal blanking stop valve XV-06, the second fine coal blanking
After stop valve XV-07 and fine coal lock hopper 103 the connection of upper end feeding mouth, the lower end discharging opening of fine coal lock hopper 103 passes sequentially through the
Connect with the upper end feeding mouth of fine coal feedstock vessel 104 after three fine coal blanking stop valve XV-08, the 4th fine coal blanking stop valve XV-09
Connect, the lower end discharging opening of fine coal feedstock vessel 104 is connected by fine coal pipeline with outside gasification furnace, and fine coal lock hopper 103 is also by flat
Weighing apparatus pipeline stop valve XV-10 is connected with fine coal feedstock vessel 104；External high pressure air inlet passes sequentially through the first pressurising stop valve
XV-01, the second pressurising stop valve XV-02 are connected with the air filling cone of fine coal lock hopper 103, and external high pressure air inlet also passes sequentially through
One pressurising stop valve XV-01, the 3rd pressurising stop valve XV-03 are connected with the inflation flute pipe of fine coal lock hopper 103, external high pressure air inlet
Mouth is connected by the 4th pressurising stop valve XV-22 with fine coal feedstock vessel 104；Also cut by fine coal blanking the top of fine coal lock hopper 103
Disconnected valve XV-23 is connected with the first interface of lock hopper filter 105, and the M grades of pressurising of equalizer tank mouthful presses stop valve with lock by M
The second interface connection of bucket filter 105, the M grades of pressure relief opening of equalizer tank passes through M pressure releases stop valve and the 5th pressurising stop valve
The first end connection of XV-20, second end of the 5th pressurising stop valve XV-20 is connected to lock by the 6th pressurising stop valve XV-21
The second interface of bucket filter 105, second end of the 5th pressurising stop valve XV-20 is also communicated to the first pressurising stop valve XV-01
And on the second connecting line between pressurising stop valve XV-02；Fine coal lock hopper 103 also by lock hopper pressure release stop valve XV-05 with
Fine coal filter 101 is connected；The second interface of lock hopper filter 105 also passes sequentially through emptying stop valve XV-11, the 3rd pressure and adjusts
Section valve PV-03 is connected with fine coal filter 101；Fine coal basin 102 and the fine coal blanking stop valve of fine coal basin 102 and first
The low-pressure admission mouthful for being input into outer low pressure nitrogen is additionally provided between XV-06；Wherein, M=1 ..., N, N are equalizer tank
Number.
In Fig. 1 shown devices, the fine coal from coal mill system is delivered to fine coal often by conveying worm or pipeline
In the fine coal basin 102 of pressure, carbon dioxide or nitrogen with fine coal are by after fine coal filter 101, meeting environmental requirement
Gas be immediately discharged to air, the fine coal separated by fine coal filter 101 enters normal pressure by rotary discharge valve XV-04
In fine coal basin 102.Preferably, it is used to balance as shown in figure 1, setting one between fine coal basin 102 and fine coal filter 101
The balance pipe (1) of the two internal pressure, it is ensured that smoothly enter fine coal basin from the fine coal in coal mill system and fine coal filter 101
102.The tapering of fine coal basin 102 is connected with the low-pressure admission mouthful for being input into outer low pressure nitrogen, is prevented from air and enters powder
Coal basin 102, and ensure in fine coal basin 102 as inerting environment.Fine coal in fine coal basin 102 is passed through using Action of Gravity Field
Two fine coal blanking stop valves enter fine coal lock hopper 103, in order under preventing the first fine coal blanking stop valve XV-06, the second fine coal
Material stop valve XV-07 is blocked, and one low-pressure nitrogen is also passed on the first fine coal blanking stop valve XV-06 preceding pipelines.
As shown in fig. 1, in order to prevent the pressure difference between external high pressure air inlet and fine coal lock hopper 103 excessive, to fine coal
The air filling cone of lock hopper 103, inflation flute pipe cause to damage, it is preferable that on the first punching press pipeline (2) and the second punching press pipeline (3)
Increase pressure-regulating valve, specifically, as shown in fig. 1, in the second pressurising stop valve XV-02 and the air filling cone of fine coal lock hopper 103
Between connect first pressure regulating valve PV-01, between the 3rd pressurising stop valve XV-03 and the inflation flute pipe of fine coal lock hopper 103
Second pressure regulating valve PV-02 is connected with, similarly, is also connected between the 4th pressurising stop valve XV-22 and fine coal feedstock vessel 104
There is the 4th pressure-regulating valve PV-04.
In above-mentioned fine coal pressure conveyer device, nitrogen in fine coal pressurization and course of conveying is reduced by setting several equalizer tanks
The discharge of gas or carbon dioxide, and first by the gas in several equalizer tanks during pressurization, then by high pressure
Gas carries out pressurising to fine coal lock hopper, can make nitrogen or carbon dioxide usage amount and discharge capacity is small, environment-friendly, economically feasible.
Corresponding to fine coal pressure conveyer device provided in an embodiment of the present invention, the embodiment of the present invention also provides a kind of fine coal and adds
The application method of conveying device is pressed, as shown in Fig. 2 the method comprises the following steps S21-S24：
S21：Fine coal lock hopper pressure release；
S22：Fine coal basin is to fine coal lock hopper blanking；
S23：Fine coal lock hopper pressurising；
S24：Fine coal lock hopper is then returned to perform S21 to fine coal feedstock vessel blanking.
After step S24, the 4th pressurising stop valve XV-22 and the 4th pressure-regulating valve can be passed through by external high pressure air inlet
To the pressurising of fine coal feedstock vessel 104 after PV-04, the fine coal in fine coal feedstock vessel is set to pass through fine coal pipeline to gasification furnace, so far
Complete fine coal pressurization and the course of conveying of a cycle.
In order to ensure the stabilization to the coal flow of burner, the 4th pressure is passed through between fine coal feedstock vessel 104 and gasification furnace
The pressure of regulating valve PV-04 controls fine coal feedstock vessel 104 keeps a metastable pressure difference, generally control pressure difference be 0.4~
1.0MPa (setting value of this pressure differential depends on the load of gasification furnace).
Fig. 3 show the specific implementation method flow chart of step S21, as shown in Figure 3, comprises the following steps S301-
S306：
S301：All high-pressure system valves and low-pressure system valve that closing is connected with fine coal lock hopper 103.
Wherein, the high-pressure system valve being connected with fine coal lock hopper 103 includes：First pressurising stop valve XV-01, the second pressurising
Stop valve XV-02, the 3rd pressurising stop valve XV-03, the 5th pressurising stop valve XV-20, the 6th pressurising stop valve XV-21, the 3rd
Fine coal blanking stop valve XV-08, the 4th fine coal blanking stop valve XV-09, balance pipeline stop valve XV-10, first to N are pressed
Stop valve, the first to N pressure release stop valve, the low-pressure system valve being connected with fine coal lock hopper 103 include：Lock hopper pressure release stop valve
XV-05, the first fine coal blanking stop valve XV-06, the second fine coal blanking stop valve XV-07, emptying stop valve XV-11.If such as Fig. 1
Shown in N=4, using one to level Four equalizer tank, then described herein first to N press the stop valve to include shown in Fig. 1 the
One pressure stop valve XV-12, second pressure stop valve XV-13, the 3rd pressure stop valve XV- of pressure stop valve XV-14, the 4th
15, described first to N pressure releases stop valve includes the first pressure release stop valve XV-16, the second pressure release stop valve shown in Fig. 1
XV-17, the 3rd pressure release stop valve XV-18, the 4th pressure release stop valve XV-19.
S302：Open M and press stop valve, the gases at high pressure in fine coal lock hopper 103 is entered by lock hopper filter 105
M grades of equalizer tank.
S303：Stop valve is pressed when M is closed after fine coal lock hopper 103 and M grades of equalizer tank pressure balance；Wherein, M's is initial
Be worth is 1.
S304：Judge whether M is equal to N, if so, then performing step S306, otherwise perform step S305.
Wherein, N is the quantity of equalizer tank；
S305：Make M=M+1 and return to execution step S302.
S306：Lock hopper pressure release stop valve XV-05 is opened so that remaining gas is cut by lock hopper pressure release in fine coal lock hopper 103
Disconnected valve XV-05 and fine coal filter 101 are drained into air.
After the pressure release of fine coal lock hopper 103 is complete, the pressure of fine coal lock hopper 103 and fine coal basin 102 is equal with atmospheric pressure, with
Fine coal basin 102 just can be to the blanking of fine coal lock hopper 103 afterwards.
Fig. 4 show the specific implementation method flow chart of step S22, as shown in Figure 4, comprises the following steps S401-
S402：
S401：Open lock hopper pressure release stop valve XV-05, the first fine coal blanking stop valve XV-06, the second fine coal blanking cut-out
Valve XV-07.So that fine coal in fine coal basin 102 under gravity blanking to fine coal lock hopper 103.
S402：Fine coal lock hopper 103 is full of closing lock hopper pressure release stop valve XV-05, the first fine coal blanking stop valve after fine coal
XV-06, the second fine coal blanking stop valve XV-07.
Fig. 5 show the specific implementation method flow chart of step S23, as shown in Figure 5, comprises the following steps S501-
S516：
S501：Open the 5th pressurising stop valve XV-20, the 6th pressurising stop valve XV-21.
S502：Open K pressure releases stop valve so that in K grades of equalizer tank gas by lock hopper filter 105 to fine coal lock hopper
103 pressurisings.Wherein, the initial value of K is N.
S503：When closing K pressure release stop valves after K grades of equalizer tank and the pressure balance of fine coal lock hopper 103.
S504：Judge whether K is equal to N1, if so, then performing step S506, otherwise perform S505.
Wherein, N1 is to specify positive integer and 1≤N1≤N, it is preferable that as N=4, N1=3.
S505：Make K=K-1 and return to execution step S502.
S506：Close the 6th pressurising stop valve XV-21.
S507：The second pressurising stop valve XV-02, the 3rd pressurising stop valve XV-03 are opened, and makes first pressure regulating valve
PV-01 and second pressure regulating valve PV-02 switch to MANUAL CONTROL mode.
S508：Open L pressure release stop valves, make gas in L grades of equalizer tank respectively through the air filling cone of fine coal lock hopper 103 and
Inflation flute pipe is to the pressurising of fine coal lock hopper 103.Wherein, the initial value of L is N1-1.
S509：When closing L pressure release stop valves after L grades of equalizer tank and the pressure balance of fine coal lock hopper 103.
S510：Judge whether L is equal to 1, if so, then performing step S512, otherwise perform step S511.
S511：L=L-1 is made, and returns to execution step S508.
S512：Close the 5th pressurising stop valve XV-20.
S513：The first pressurising stop valve XV-01 is opened, the gases at high pressure of external high pressure air inlet pass through fine coal lock hopper respectively
103 air filling cone and inflation flute pipe is to the pressurising of fine coal lock hopper 103.
S514：The second pressurising stop valve XV-02 and first pressure regulating valve PV-01 is closed after waiting scheduled duration, and is beaten
Open sky stop valve XV-11, makes the 3rd pressure-regulating valve PV-03 throw automatic control mode.
S515：After fine coal lock hopper 103 and the pressure differential of fine coal feedstock vessel 104 are less than predetermined threshold, emptying stop valve is closed
XV-11 and the 3rd pressure-regulating valve PV-03, and open balance pipeline stop valve XV-10.
Preferably, predetermined threshold is 20KPa, when the pressure differential of fine coal lock hopper 103 and fine coal feedstock vessel 104 is less than 20KPa
And maintain more than 15s, then balance pipeline stop valve XV-10 is opened, make the pressure between fine coal lock hopper and fine coal feedstock vessel complete
It is equal.
S516：After fine coal lock hopper 103 and fine coal 104 pressure balance of feedstock vessel, the first pressurising stop valve XV-01 of closing,
3rd pressurising stop valve XV-03, second pressure regulating valve PV-02, the pressurising of fine coal lock hopper 103 are completed.
In embodiment illustrated in fig. 5, successively using level Four equalizer tank, three-level equalizer tank, two grades of equalizer tanks and one-level equalizer tank
Punching press is carried out to fine coal lock hopper 103, then recycles to come from the external high pressure air inlet of high-pressure carbon dioxide (or nitrogen)
Punching press is carried out to fine coal lock hopper 103.Equalizer tanks at different levels toward fine coal lock hopper 103 pressurising pipeline, and from high-pressure carbon dioxide or nitrogen
After the gas line mixing that gas surge tank comes, it is divided into three tunnels and (top of fine coal lock hopper 103, the bottom inflatable device of fine coal lock hopper 103 and fills
Siren pipe) fine coal lock hopper is pressurizeed, equalizer tank is so avoided in the Plenum Process of fine coal lock hopper 103 from fine coal lock hopper
103 top pressurisings cause to form hardened problem to fine coal punching press, and equalizer tank is locked by lock hopper filter 105 to fine coal
Struggle against during 103 punching presses, blowback can be carried out to lock hopper filter 105, it is to avoid lock hopper plugged filter.
Fig. 6 show the specific implementation method flow chart of step S24, as shown in Figure 6, comprises the following steps S601-
S602：
S601：When fine coal feedstock vessel 104 be in predetermined low material position when, open the 3rd fine coal blanking stop valve XV-08 and
4th fine coal blanking stop valve XV-09.So that fine coal is from the blanking of fine coal lock hopper 103 to fine coal feedstock vessel 104.
S602：When in fine coal lock hopper 103 fine coal whole blankings finish or fine coal feedstock vessel 104 be in predetermined high charge level
When, close the 3rd fine coal blanking stop valve XV-08, the 4th fine coal blanking stop valve XV-09, balance pipeline stop valve XV-10.Powder
Coal lock hopper 103 is finished to the blanking of fine coal feedstock vessel 104.
Fine coal pressurization that the present invention is provided and transportation scheme after the completion of fine coal lock hopper discharging, by by high pressure gas discharge
Pressure release is carried out to several equalizer tanks, when fine coal lock hopper needs pressurising, and first using equalizer tanks at different levels it is carried out pressurising with
After reuse high pressure admission mouthful pressurising, make nitrogen or carbon dioxide usage amount and discharge capacity be small, environment-friendly, economically feasible, mainly
Solve highly energy-consuming and environmental issue during the fine coal pressurized delivered of coal gasification apparatus, specifically address fine coal lock hopper pressurization and
Nitrogen or carbon dioxide maximum discharge problem in pressure leak process.In addition, in this scenario, being set between fine coal lock hopper and each equalizer tank
Lock hopper filter is put, has made during fine coal lock hopper pressure release the gases at high pressure containing fine coal dust by after lock hopper filter,
Dust is filtered, it is to avoid the dust in gases at high pressure is brought into equalizer tank, and reduces equalizer tanks at different levels and fine coal lock hopper
Between fill, each valve on pressure relief pipe contacts the probability of fine coal, further extends the service life of valve.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of fine coal pressure conveyer device, it is characterised in that including the fine coal filter (101), the fine coal basin that are vertically arranged
(102), fine coal lock hopper (103), fine coal feedstock vessel (104), lock hopper filter (105) and one-level equalizer tank are to N grades of equalizer tank；
The lower end outlet of the fine coal filter (101) is entered by rotary discharge valve (XV-04) with the upper end of the fine coal basin (102)
Material mouth is connected, and the lower end discharging opening of fine coal basin (102) passes sequentially through the first fine coal blanking stop valve (XV-06), the second fine coal
Blanking stop valve (XV-07) is connected with the upper end feeding mouth of the fine coal lock hopper (103) afterwards, under the fine coal lock hopper (103)
Bring out material mouth pass sequentially through the 3rd fine coal blanking stop valve (XV-08), the 4th fine coal blanking stop valve (XV-09) afterwards with the powder
The upper end feeding mouth connection of coal feedstock vessel (104), the lower end discharging opening of the fine coal feedstock vessel (104) by fine coal pipeline with it is outer
Portion's gasification furnace connection, the fine coal lock hopper (103) is also by balancing pipeline stop valve (XV-10) with the fine coal feedstock vessel
(104) it is connected；External high pressure air inlet passes sequentially through the first pressurising stop valve (XV-01), the second pressurising stop valve (XV-02)
Air filling cone with the fine coal lock hopper (103) is connected, and external high pressure air inlet also passes sequentially through the first pressurising stop valve (XV-
01), the 3rd pressurising stop valve (XV-03) is connected with the inflation flute pipe of the fine coal lock hopper (103), and external high pressure air inlet passes through
4th pressurising stop valve (XV-22) is connected with the fine coal feedstock vessel (104)；Fine coal lock hopper (103) top also passes through powder
Coal blanking stop valve (XV-23) is connected with the first interface of lock hopper filter (105), and the M grades of pressurising of equalizer tank mouthful is equal by M
Pressure stop valve is connected with the second interface of the lock hopper filter (105), and the M grades of pressure relief opening of equalizer tank is cut off by M pressure releases
Valve is connected with the first end of the 5th pressurising stop valve (XV-20), and the second end of the 5th pressurising stop valve (XV-20) is filled by the 6th
Pressure stop valve (XV-21) is connected to the second interface of the lock hopper filter (105), and the of the 5th pressurising stop valve (XV-20)
Two ends are also communicated on the connecting line between the first pressurising stop valve (XV-01) and the second pressurising stop valve (XV-02)；
The fine coal lock hopper (103) is also connected by lock hopper pressure release stop valve (XV-05) with fine coal filter (101)；The lock hopper mistake
The second interface of filter (105) also passes sequentially through emptying stop valve (XV-11), the 3rd pressure-regulating valve (PV-03) and the powder
Coal filter (101) is connected；The tapering of the fine coal basin (102) and the fine coal basin (102) and the first fine coal blanking
The low-pressure admission mouthful for being input into outer low pressure nitrogen is additionally provided between stop valve (XV-06)；Wherein, M=1 ..., N, N are
The number of equalizer tank.
2. fine coal pressure conveyer device as claimed in claim 1, it is characterised in that the second pressurising stop valve (XV-02)
First pressure regulating valve (PV-01), the 3rd pressurising cut-out are also associated with and the air filling cone of the fine coal lock hopper (103) between
Second pressure regulating valve (PV-02) is also associated between valve (XV-03) and the inflation flute pipe of the fine coal lock hopper (103), it is described
The 4th pressure-regulating valve (PV-04) is also associated between 4th pressurising stop valve (XV-22) and the fine coal feedstock vessel (104).
3. fine coal pressure conveyer device as claimed in claim 2, it is characterised in that the fine coal filter (101) and fine coal
The balance pipe (1) for balancing the two internal pressure is also associated between basin (102).
4. fine coal pressure conveyer device as claimed in claim 2, it is characterised in that the N=4.
5. the application method of fine coal pressure conveyer device described in a kind of any one of claim 2 to 4, it is characterised in that including：
Fine coal lock hopper blowdown step；
Fine coal basin is to fine coal lock hopper blanking step；
Fine coal lock hopper pressurising step；
To fine coal feedstock vessel blanking step, the fine coal lock hopper is returned and performed fine coal lock hopper again after being finished to fine coal feedstock vessel blanking
The fine coal lock hopper blowdown step.
6. the application method of fine coal pressure conveyer device as claimed in claim 5, it is characterised in that the fine coal lock hopper pressure release
Step includes：
Close the first pressurising stop valve (XV-01), the second pressurising stop valve (XV-02), the 3rd pressurising stop valve (XV-03),
Five pressurising stop valves (XV-20), the 6th pressurising stop valve (XV-21), the 3rd fine coal blanking stop valve (XV-08), the 4th fine coal
Blanking stop valve (XV-09), balance pipeline stop valve (XV-10), first to N press stop valve, first to N pressure releases to cut off
Valve, lock hopper pressure release stop valve (XV-05), the first fine coal blanking stop valve (XV-06), the second fine coal blanking stop valve (XV-07),
Emptying stop valve (XV-11)；
Open M and press stop valve, the inner gases at high pressure of fine coal lock hopper (103) is entered M grades by lock hopper filter (105)
Pressure tank, to fine coal lock hopper (103) and M grades of equalizer tank pressure balance after close M and press stop valve；Wherein, the initial value of M is 1；
Judge whether M is equal to N, if so, then performing next step, otherwise make M=M+1 and return to execution previous step；Wherein, N
It is the quantity of equalizer tank；
Lock hopper pressure release stop valve (XV-05) is opened so that remaining gas is by lock hopper pressure release stop valve in fine coal lock hopper (103)
(XV-05) and during fine coal filter (101) drains into air.
7. the application method of fine coal pressure conveyer device as claimed in claim 6, it is characterised in that the fine coal basin is to powder
Coal lock hopper blanking step includes：
Open lock hopper pressure release stop valve (XV-05), the first fine coal blanking stop valve (XV-06), the second fine coal blanking stop valve
(XV-07), so that fine coal in fine coal basin (102) under gravity blanking to fine coal lock hopper (103)；
Fine coal lock hopper (103) is full of closing lock hopper pressure release stop valve (XV-05), the first fine coal blanking stop valve (XV- after fine coal
06), the second fine coal blanking stop valve (XV-07).
8. the application method of fine coal pressure conveyer device as claimed in claim 7, it is characterised in that the fine coal lock hopper pressurising
Step includes：
Open the 5th pressurising stop valve (XV-20), the 6th pressurising stop valve (XV-21)；
K pressure releases stop valve is opened so that gas fills by lock hopper filter (105) to fine coal lock hopper (103) in K grades of equalizer tank
Pressure, after closing K pressure release stop valves after K grades of equalizer tank and fine coal lock hopper (103) pressure balance；The initial value of K is N；
Judge whether K is equal to N1, if so, then performing next step, otherwise make K=K-1 and return to execution previous step；Wherein,
N1 is to specify positive integer and 1≤N1≤N；
Close the 6th pressurising stop valve (XV-21)；
The second pressurising stop valve (XV-02), the 3rd pressurising stop valve (XV-03) are opened, and makes first pressure regulating valve (PV-01)
MANUAL CONTROL mode is switched to second pressure regulating valve (PV-02)；
Open L pressure releases stop valve so that in L grades of equalizer tank gas respectively through fine coal lock hopper (103) air filling cone and inflation flute
Pipe to fine coal lock hopper (103) pressurising, after closing L pressure release stop valves after L grades of equalizer tank and fine coal lock hopper (103) pressure balance；L
Initial value be N1-1；
Judge whether L is equal to 1, if so, then performing next step, otherwise make L=L-1 and return to execution previous step；
Close the 5th pressurising stop valve (XV-20)；
The first pressurising stop valve (XV-01) is opened, the gases at high pressure of external high pressure air inlet are respectively by fine coal lock hopper (103)
Air filling cone and inflation flute pipe are to fine coal lock hopper (103) pressurising；
The second pressurising stop valve (XV-02) and first pressure regulating valve (PV-01) are closed after waiting scheduled duration, and opens emptying
Stop valve (XV-11), makes the 3rd pressure-regulating valve (PV-03) throw automatic control mode；
After fine coal lock hopper (103) and fine coal feedstock vessel (104) pressure differential are less than predetermined threshold, emptying stop valve (XV- is closed
11) with the 3rd pressure-regulating valve (PV-03), and balance pipeline stop valve (XV-10) is opened；
After fine coal lock hopper (103) and fine coal feedstock vessel (104) pressure balance, the first pressurising stop valve (XV-01), the 3rd are closed
Pressurising stop valve (XV-03), second pressure regulating valve (PV-02).
9. the application method of fine coal pressure conveyer device as claimed in claim 8, it is characterised in that the fine coal lock hopper is to powder
Coal feedstock vessel blanking step includes：
When fine coal feedstock vessel (104) is in predetermined low material position, the 3rd fine coal blanking stop valve (XV-08) and the 4th powder are opened
Coal blanking stop valve (XV-09), so that fine coal is from (103) blanking of fine coal lock hopper to fine coal feedstock vessel (104)；
When in fine coal lock hopper (103) fine coal whole blankings finish or fine coal feedstock vessel (104) in predetermined high charge level when, close
3rd fine coal blanking stop valve (XV-08), the 4th fine coal blanking stop valve (XV-09), balance pipeline stop valve (XV-10).
10. the application method of fine coal pressure conveyer device as claimed in claim 8, it is characterised in that the predetermined threshold is
20KPa。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249990.6A CN106906005A (en) | 2017-04-17 | 2017-04-17 | Pulverized coal pressurized conveying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249990.6A CN106906005A (en) | 2017-04-17 | 2017-04-17 | Pulverized coal pressurized conveying device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106906005A true CN106906005A (en) | 2017-06-30 |
Family
ID=59210590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710249990.6A Pending CN106906005A (en) | 2017-04-17 | 2017-04-17 | Pulverized coal pressurized conveying device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106906005A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| 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 |
| CN111717667A (en) * | 2019-12-16 | 2020-09-29 | 新能能源有限公司 | Pulverized coal lock hopper discharging system and method |
| CN113697305A (en) * | 2021-10-11 | 2021-11-26 | 河南省中原大化集团有限责任公司 | Novel coal powder lock hopper sequential control automatic bridge breaking device and application method |
| CN115058263A (en) * | 2022-08-01 | 2022-09-16 | 陕西延长石油（集团）有限责任公司 | Pulverized coal pressurized continuous feeding device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112720A (en) * | 2013-02-18 | 2013-05-22 | 安徽晋煤中能化工股份有限公司 | High pressure conveyance gas recovery method |
| CN103328615A (en) * | 2011-02-25 | 2013-09-25 | 三菱重工业株式会社 | Fine coal powder supply system for coal gasification furnace |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN204918502U (en) * | 2015-08-27 | 2015-12-30 | 成都高科达科技有限公司 | A energy recuperation system for buggy pressurization and feed arrangement |
-
2017
- 2017-04-17 CN CN201710249990.6A patent/CN106906005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103328615A (en) * | 2011-02-25 | 2013-09-25 | 三菱重工业株式会社 | Fine coal powder supply system for coal gasification furnace |
| CN103112720A (en) * | 2013-02-18 | 2013-05-22 | 安徽晋煤中能化工股份有限公司 | High pressure conveyance gas recovery method |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN204918502U (en) * | 2015-08-27 | 2015-12-30 | 成都高科达科技有限公司 | A energy recuperation system for buggy pressurization and feed arrangement |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| CN107284883B (en) * | 2017-07-19 | 2024-01-23 | 陕西延长石油（集团）有限责任公司 | Intermittent lock hopper pressurized pulverized coal conveying device and conveying method |
| 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 |
| CN111717667A (en) * | 2019-12-16 | 2020-09-29 | 新能能源有限公司 | Pulverized coal lock hopper discharging system and method |
| CN113697305A (en) * | 2021-10-11 | 2021-11-26 | 河南省中原大化集团有限责任公司 | Novel coal powder lock hopper sequential control automatic bridge breaking device and application method |
| CN113697305B (en) * | 2021-10-11 | 2024-09-13 | 河南省中原大化集团有限责任公司 | Application method of pulverized coal lock hopper sequential control automatic bridge breaking device |
| CN115058263A (en) * | 2022-08-01 | 2022-09-16 | 陕西延长石油（集团）有限责任公司 | Pulverized coal pressurized continuous feeding device and method |
| CN115058263B (en) * | 2022-08-01 | 2024-04-16 | 陕西延长石油（集团）有限责任公司 | Pulverized coal pressurized continuous feeding device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106906005A (en) | Pulverized coal pressurized conveying device and method | |
| CN103112720B (en) | High pressure conveyance gas recovery method | |
| CN204918502U (en) | A energy recuperation system for buggy pressurization and feed arrangement | |
| CN102388152B (en) | Method for feeding a burden to a blast furnace | |
| CN108504393A (en) | Energy-efficient fine coal pressurization conveying system | |
| CN103662837A (en) | Dense-phase conveying system and method | |
| CN106122768B (en) | The method that air in more spherical tanks is replaced in disposable series connection | |
| CN202338768U (en) | Automatic filling device for electronic grade ultrapure ammonia | |
| CN206143140U (en) | Pulverized coal pressurization conveying system | |
| CN206969386U (en) | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device | |
| CN104046395B (en) | Gas-solid mixed material pressure continuous-reduction system | |
| CN114507550B (en) | Pressure control system of voltage transformation device | |
| CN107312573B (en) | Pipeline blowback device applied to lock bucket circulation and bridge removal processing system and processing technology thereof | |
| CN203907205U (en) | CNG (compressed natural gas) parallel type integrated preference automatic sequence control cabinet | |
| CN206827673U (en) | CNG discharge apparatus | |
| CN203345474U (en) | Powder storage system and mixing station | |
| CN106190330B (en) | Pulverized coal pressurized conveying system and method of coal gasification entrained flow bed | |
| CN107284883B (en) | Intermittent lock hopper pressurized pulverized coal conveying device and conveying method | |
| CN202272507U (en) | Long-distance and high-output continuous delivery pump | |
| CN202729345U (en) | Pneumatic dedusting system | |
| CN202744007U (en) | Vertically-arranged upward-feed type high-output continuous conveying pump | |
| CN108131562A (en) | A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device | |
| CN108980883B (en) | Biomass material lock and working method | |
| CN104514980B (en) | Liquefied natural gas unloading booster skid | |
| CN204661622U (en) | Powder lock hopper pressurizing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170630 |