CN106906005A - A kind of fine coal pressure conveyer device and method - Google Patents

A kind of fine coal pressure conveyer device and method Download PDF

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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
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CN
China
Prior art keywords
fine coal
stop valve
lock hopper
pressure
pressurising
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CN201710249990.6A
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Chinese (zh)
Inventor
袁金刚
朱玉营
彭书
郑帅
石剑
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航天长征化学工程股份有限公司
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Priority to CN201710249990.6A priority Critical patent/CN106906005A/en
Publication of CN106906005A publication Critical patent/CN106906005A/en

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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46Gasification of granular or pulverulent flues in suspension
    • C10J3/48Apparatus; Plants
    • C10J3/50Fuel charging devices
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2200/00Details of gasification apparatus
    • C10J2200/15Details of feeding means

Abstract

The present invention provides a kind of fine coal pressure conveyer device, for solving the problems, such as the pressurization of fine coal lock hopper and nitrogen or carbon dioxide maximum discharge in pressure leak process.The fine coal pressure conveyer device includes the fine coal filter, fine coal basin, fine coal lock hopper, fine coal feedstock vessel, lock hopper filter and the multistage equalizer tank that are vertically arranged;Fine coal filter, fine coal basin, fine coal lock hopper, fine coal feedstock vessel successively straight down connection and two-by-two between be provided with related valve, fine coal lock hopper is connected by balancing pipeline stop valve with fine coal feedstock vessel;External high pressure air inlet distinguishes fine coal lock hopper and fine coal feedstock vessel;The pressurising mouthful of equalizer tanks at different levels and pressure relief opening are connected by valve with lock hopper filter respectively, and the pressure relief opening of equalizer tanks at different levels is also connected by the air filling cone and inflation flute pipe of valve and fine coal lock hopper, and lock hopper filter is also connected by valve and fine coal filter.The nitrogen or carbon dioxide usage amount and discharge capacity of the fine coal pressure conveyer device are small, environment-friendly.

Description

A kind of fine coal pressure conveyer device and method

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。
CN201710249990.6A 2017-04-17 2017-04-17 A kind of fine coal pressure conveyer device and method CN106906005A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

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