CN207973234U - The powder system based on nitrogen closed conveying and supercharging recycling - Google Patents
The powder system based on nitrogen closed conveying and supercharging recycling Download PDFInfo
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- CN207973234U CN207973234U CN201820376934.9U CN201820376934U CN207973234U CN 207973234 U CN207973234 U CN 207973234U CN 201820376934 U CN201820376934 U CN 201820376934U CN 207973234 U CN207973234 U CN 207973234U
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Abstract
The utility model is related to a kind of the powder systems recycled based on nitrogen closed conveying and supercharging, are made of nitrogen-making device, nitrogen supercharging recycling device, pulverized coal bin system and storehouse pump the powder system；The nitrogen supercharging recycling device includes nitrogen gas tank after secondary ash collector, purification, nitrogen gas tank after nitrogen supercharging machine and pressurization, the entrance of nitrogen gas tank is also associated with the outlet of nitrogen air accumulator by pipeline after nitrogen gas tank and pressurization after the purification, and the entrance of the secondary ash collector is also associated with the outlet of nitrogen air accumulator by pipeline.The utility model uses the defeated powder mode of totally-enclosed nitrogen, be used as power by the nitrogen of qualified nitrogen and supercharging recycling and generates flow velocity in the duct and carry coal dust and is conveyed, and can convey any kind of coal dust, and safety anti-explosive performance height；Nitrogen is subjected to recycling, on the one hand saves energy loss, on the other hand reduces equipment of making nitrogen input and operating cost, reduces the cost of entire the powder system.
Description
Technical field
The utility model is related to the powder system technical fields of coal dust, and in particular to one kind being based on nitrogen closed conveying and increasing
Press the powder system of recycling.
Background technology
Coal dust is mainly delivered to coal by existing coal powder conveying system in a manner of Geldart-D particle from the storehouse of powder collecting system pump
Pulverized coal bin before powder boiler, pumped (conveying) medium are mostly compressed air or oxygen-enriched air.When conveying anchracite duff, defeated powder equipment opens
Dynamic, operation and shutdown can operate under non-inert atmosphere, and compressed air can be used in conveying gas；But when conveying mixed coal powder,
When bituminous coal powder, startup, operation and the shutdown of defeated powder equipment should all operate under non-inert atmosphere, and conveying gas also needs to use inertia
Gas, such as nitrogen.Therefore from safety anti-explosive angle, existing the powder system is inadequate for the adaptability of coal；Simultaneously
Coal dust conveying is carried out using compressed air, before coal dust is sent to boiler after pulverized coal bin, compressed air is directly externally discharged, and energy is caused
Loss, economy are poor.
Utility model content
In view of this, different types of coal can be conveyed the purpose of this utility model is to provide one kind and can be to nitrogen supercharging
Cycling and reutilization, solve energy loss and reduce nitrogen-making device equipment investment and operation cost based on nitrogen closed conveying and increasing
The powder system for pressing recycling, to solve the problems of the prior art.
A kind of the powder system based on nitrogen closed conveying and supercharging recycling of the utility model, is supplied by nitrogen circulation
System, pulverized coal bin system and storehouse pump the powder system are constituted；
The nitrogen circulation supply system is made of nitrogen-making device and nitrogen supercharging recycling device；
The nitrogen-making device includes screw-rod air compressor, high-efficiency degreasing device, combination type drying machines, dust filter unit, PSA groups
Nitrogen making machine is closed, the screw-rod air compressor is equipped with air intake, and the outlet of the screw-rod air compressor is connected efficiently by pipeline
The entrance of oil expeller, the outlet of the high-efficiency degreasing device connect the entrance of combination type drying machines by pipeline, and the combined type is dry
The outlet of dry machine connects the entrance of dust filter unit by pipeline, and the outlet of the dust filter unit connects PSA groups by pipeline
Close the outlet of nitrogen making machine；
The nitrogen-making device further includes nitrogen air accumulator, and the outlet of the PSA combinations nitrogen making machine connects nitrogen by pipeline
The outlet of the entrance of air accumulator, the nitrogen air accumulator pumps the powder system and nitrogen supercharging recycling dress by pipeline connections storehouse
It sets；
After the nitrogen supercharging recycling device includes nitrogen gas tank after secondary ash collector, purification, nitrogen supercharging machine and pressurization
The entrance of nitrogen gas tank, the secondary ash collector connects pulverized coal bin system by pipeline, and the outlet of the secondary ash collector passes through pipe
The entrance of nitrogen gas tank after road connection purification, the entrance of nitrogen gas tank exported through pipeline connection nitrogen supercharging machine after the purification,
The nitrogen supercharging machine outlet by pipeline connection pressurize after nitrogen gas tank entrance, after the pressurization outlet of nitrogen gas tank pass through
Pipeline connections storehouse pumps the powder system, and the entrance of nitrogen gas tank is also associated with nitrogen by pipeline after nitrogen gas tank and pressurization after the purification
The outlet of gas air accumulator, the entrance of the secondary ash collector are also associated with the outlet of nitrogen air accumulator, the two level by pipeline
The entrance of deduster is also associated with pulverized coal bin system；
The pulverized coal bin system includes pulverized coal bin, silo roof bag filter and air-introduced machine, and the silo roof bag filter is set
In the top of pulverized coal bin, and the entrance of silo roof bag filter connects the outlet air-introduced machine of pulverized coal bin set on storehouse by pipeline
The top of bag filter is pushed up, and the outlet of the entrance connection silo roof bag filter of air-introduced machine, the outlet of the air-introduced machine are logical
Piping connects the entrance of secondary ash collector；
Storehouse pump the powder system includes storehouse pump, outlet valve, house outlet reducing, inlet valve, an intake valve, secondary
Intake valve, unimpeded valve and instrument control device, the entrance of the storehouse pump pass through the outlet of nitrogen gas tank after pipeline connection is pressurizeed.
Preferably, the dust filter unit includes dust fine filter, HA grades of filters, and the entrance of the dust fine filter is logical
Piping connects combination type drying machines, and the outlet of the dust fine filter connects the entrance of HA grades of filters by pipeline, described
The outlet of HA grades of filters connects the entrance that PSA combines nitrogen making machine by pipeline, and the PSA combinations nitrogen making machine includes 2 bufferings
Tank and 2 adsorption towers, the outlet of the HA grades of filter are separately connected the entrance of 2 adsorption towers, each suction by pipeline
The entrance of the outlet connection surge tank of attached tower, the entrance of the outlet connection nitrogen air accumulator of the surge tank.
Preferably, the instrument control device includes controller, level-sensing device, pressure transmitter, flowmeter and oxygen analyzer,
The level-sensing device, pressure transmitter, flowmeter and oxygen analyzer are electrically connected controller.
Preferably, the storehouse pump the powder system further includes audible-visual annunciator, equipment anti-blockage structure and pipeline anti-clogging
Structure；The equipment anti-blockage structure includes sewage draining exit, and the audible-visual annunciator is electrically connected controller.
Preferably, the nitrogen-making device further includes instrument gas high pressure tank, and the instrument is with gas air accumulator using not
Become rusty steel air accumulator, and the outlet connection pulverized coal bunker of boiler pipeline switching valve solenoid valve box of the instrument gas high pressure tank enters
Mouthful, the entrance of instrument gas high pressure tank connects the outlet of HA grades of filters by pipeline.
Structure more than makes having the advantages that for the utility model：
The utility model uses the defeated powder mode of totally-enclosed nitrogen, passes through qualified nitrogen and the nitrogen of supercharging recycling
It generates flow velocity carrying coal dust in the duct as power to be conveyed, any kind of coal dust can be conveyed, no longer needed to because not
Different defeated powder equipments is individually used with coal, and safety anti-explosive performance is high.
Nitrogen is carried out recycling by the nitrogen supercharging recycling device that the utility model uses, compared to using compression
The defeated powder mode of air has conveyed directly externally discharge, on the one hand saves energy loss, on the other hand reduces equipment of making nitrogen throwing
Enter and operating cost.
Description of the drawings
By referring to the drawings to the description of the utility model embodiment, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the flow diagram of the nitrogen supercharging recycling device in the utility model；
Fig. 2 is the pulverized coal bin nitrogen recycling system schematic in the utility model；
Fig. 3 is the nitrogen-making device schematic diagram in the utility model；
Fig. 4 is the powder system flow diagram of the utility model based on nitrogen closed conveying and supercharging recycling.
In figure：1, first pipe；2, second pipe；3, third pipeline；4, the 4th pipeline；5, the 5th pipeline；6, the 6th pipe
Road；7, the 7th pipeline；8, the first sewage draining exit；9, the second sewage draining exit；10, house outlet reducing；11, secondary ash collector；12, net
Nitrogen gas tank after change；13, nitrogen supercharging machine；14, nitrogen gas tank after pressurizeing；15, oxygen analyzer；16, it is vented；17, the first reducing；18、
Second reducing；19, pneumatic ball valve reducing；20, the second pneumatic ball valve；21, first manual butterfly valve；22, the second Hand-operated butterfly valve；23、
Third Hand-operated butterfly valve；24, knife gate valve；25, manual ball valve；26, the first pneumatic ball valve；27, the 4th Hand-operated butterfly valve；28, the 5th hand
Dynamic butterfly valve；29, the first shut-off valve；30, the second shut-off valve；31, third shut-off valve；32, flange form flowmeter；33, third is manual
Ball valve；34, pulverized coal bin；35, third reducing；36, air-introduced machine；37, the 4th shut-off valve；38, ball valve；39, the first unimpeded valve；40、
Second unimpeded valve；41, screw-rod air compressor；42, high-efficiency degreasing device；43, combination type drying machines；44, dust fine filter；45、HA
Grade filter；46, PSA combines nitrogen making machine；47, nitrogen air accumulator；48, instrument gas high pressure tank；49, storehouse pumps；50, silo roof
Bag filter.
Specific implementation mode
Hereinafter reference will be made to the drawings is more fully described the various embodiments of the utility model.In various figures, identical
Element is indicated using same or similar reference numeral.For the sake of clarity, the various pieces in attached drawing are not drawn to paint
System.
Described embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on this reality
With the embodiment in novel, those of ordinary skill in the art without making creative work it is obtained it is all its
His embodiment, belongs to the range that the utility model is protected.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected to, can also be connected by intermediary brief introduction,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The specific meaning of language in the present invention.
As shown in Figs 1-4, a kind of the powder system based on nitrogen closed conveying and supercharging recycling of the utility model, by
Nitrogen circulation supply system, pulverized coal bin system and storehouse pump the powder system are constituted；
The nitrogen circulation supply system is made of nitrogen-making device and nitrogen supercharging recycling device；
The nitrogen-making device includes screw-rod air compressor 41, high-efficiency degreasing device 42, combination type drying machines 43, dust-filtering
Device, PSA combine nitrogen making machine 46, and the screw-rod air compressor 41 is equipped with air intake, and the outlet of the screw-rod air compressor 41 is logical
Piping connects the entrance of high-efficiency degreasing device 42, and the outlet of the high-efficiency degreasing device 42 connects combination type drying machines 43 by pipeline
Entrance, the combination type drying machines 43 outlet by pipeline connection dust filter unit entrance, the dust filter unit
Outlet connects the outlet that PSA combines nitrogen making machine 46 by pipeline；
The nitrogen-making device further includes nitrogen air accumulator 47, and the outlet of the PSA combinations nitrogen making machine 46 is connected by pipeline
The outlet of the entrance of nitrogen air accumulator 47, the nitrogen air accumulator 47 pumps the powder system and nitrogen supercharging again by pipeline connections storehouse
On the one hand circulator provides the nitrogen power that defeated powder needs to storehouse pump the powder system, is on the other hand being recycled to nitrogen supercharging
Device provides qualified nitrogen, for supplementing nitrogen gas concn, the nitrogen gas concn and pressure value being pressurized to needed for the pump the powder system of storehouse
After continue by nitrogen send to storehouse pump 49, again participate in storehouse pump the powder system.In view of being entirely based on nitrogen closed conveying and supercharging
The factors such as equipment needed for the powder system of recycling is more, seal for pipe joints problem and equipment are leaked out, during nitrogen supercharging,
Qualified nitrogen is continuously replenished, on the one hand reduces the oxygen content in coal dust transmission process in pipeline, on the other hand ensures conveying powder
Gas ratio.
The nitrogen supercharging recycling device includes nitrogen gas tank 12,13 and of nitrogen supercharging machine after secondary ash collector 11, purification
The entrance of nitrogen gas tank 14 after pressurization, the secondary ash collector 11 connects pulverized coal bin system, the secondary ash collector 11 by pipeline
Outlet by pipeline connection purify after nitrogen gas tank 12 entrance, after the purification outlet of nitrogen gas tank 12 nitrogen is connected by pipeline
The entrance of gas supercharger 13, the outlet of the nitrogen supercharging machine 13 connects the entrance of nitrogen gas tank 14 after pressurization by pipeline, described
After pressurization the outlet of nitrogen gas tank 14 by pipeline connections storehouse pump the powder system, after the purification nitrogen gas tank 12 and pressurization after nitrogen
The entrance of tank 14 is also associated with the outlet of nitrogen air accumulator 47 by pipeline, the entrance of the secondary ash collector 11 by pipeline also
It is connected with the outlet of nitrogen air accumulator 47；
The pulverized coal bin system includes pulverized coal bin 34, silo roof bag filter 50 and air-introduced machine 36, and the silo roof cloth bag removes
Dirt device 50 is set to the top of pulverized coal bin 34, and the entrance of silo roof bag filter 50 connects the outlet of pulverized coal bin 34 by pipeline,
The air-introduced machine 36 is set to the top of silo roof bag filter 50, and the entrance of air-introduced machine 36 connects going out for bag filter 50
Mouthful, the outlet of the air-introduced machine 36 connects the entrance of secondary ash collector 11 by pipeline, and the entrance of the secondary ash collector 11 is also
It is connected with pulverized coal bin system；
The storehouse pump the powder system includes storehouse pump 49, outlet valve, house outlet reducing, inlet valve, intake valve, two
Secondary intake valve, unimpeded valve and instrument control device, the entrance of storehouse pump 49 are gone out by nitrogen gas tank 14 after pipeline connection pressurization
Mouthful.
The dust filter unit includes dust fine filter 44, HA grades of filters 45, and the entrance of the dust fine filter 44 is logical
Piping connects combination type drying machines 43, outlet the entering by pipeline HA grades of filters 45 of connection of the dust fine filter 44
Mouthful, the outlet of the HA grades of filter 45 connects the entrance that PSA combines nitrogen making machine 46 by pipeline, and the PSA combines nitrogen making machine
Including 2 surge tanks and 2 adsorption towers, 2 adsorption towers are connected in parallel, and carry out alternately pressurized adsorbent and decompression desorption, this mistake
Journey detaches most of nitrogen in air with small part oxygen, and oxygen-enriched air is emptied；The outlet of the HA grades of filter
The entrance of 2 adsorption towers, the entrance of the outlet connection surge tank of each adsorption tower, the buffering are separately connected by pipeline
The entrance of the outlet connection nitrogen air accumulator of tank；The instrument control device includes controller, level-sensing device, pressure transmitter, stream
Gauge and oxygen analyzer, the level-sensing device, pressure transmitter, flowmeter and oxygen analyzer are electrically connected controller；The storehouse pump
The powder system further includes audible-visual annunciator, equipment anti-blockage structure and pipeline anti-blockage structure；The equipment anti-blockage structure
Including sewage draining exit, the audible-visual annunciator is electrically connected controller；The nitrogen-making device further includes instrument gas high pressure tank 48,
Instrument gas air accumulator uses stainless steel air accumulator, the outlet of instrument gas high pressure tank to connect pulverized coal bunker of boiler
The entrance of the entrance of pipeline switching valve solenoid valve box, instrument gas high pressure tank 48 connects HA grades of filters by pipeline
45 outlet.
Operation principle：Storehouse in the powder system of the utility model based on nitrogen closed conveying and supercharging recycling pumps defeated powder
System and pulverized coal bin system use the prior art, and nitrogen supercharging recycling device is mainly increased on this powder system, this dress
The function of setting is after the nitrogen for having completed coal dust conveying is recycled, is pressurized, to be sent again to storehouse pump 49, participates in storehouse and pumps defeated powder
System, on the one hand saves energy loss, on the other hand reduces nitrogen gas preparing input and operating cost.
It is according to principle of pressure swing adsorption, using the carbon molecular sieve of high-quality as adsorbent, certain that PSA, which combines nitrogen making machine,
Pressure under, nitrogen is produced from air.Air first by screw-rod air compressor 41 absorption be pressurized after by efficient degreasing
After 42 oil removing of device, combination type drying machines 43 be dried, dust fine filter 44 and HA grades of filters 45 remove chalk dust removing, purification is formed
Dry compressed air, into progress pressurized adsorbent, decompression desorption in the adsorption tower in PSA combination nitrogen making machines 46；Due to power
Effect is learned, oxygen diffusion rate in carbon molecular sieve micropore is much larger than nitrogen, and when absorption not up to balances, nitrogen is enriched in the gas phase
Get up, forms qualified nitrogen；Then it is decompressed to normal pressure, other impurity such as adsorbed oxygen are desorbed in adsorbent, realize regeneration.
Most of qualified nitrogen storage is that later stage storehouse pumps the powder system gas supply, is stored in instrument gas on a small quantity in nitrogen air accumulator 47
High pressure tank 48, the instrument use stainless steel air accumulator, instrument gas high pressure tank 48 with gas air accumulator 48
The entrance of outlet connection pulverized coal bunker of boiler pipeline switching valve solenoid valve box.Two adsorption towers of setting generally in nitrogen-making device, one
Adsorption tower absorption production nitrogen, another adsorption tower desorption and regeneration are automatically controlled by PLC program, make two adsorption tower alternating cycle works,
To realize the purpose of continuous production high-quality passing nitrogen.
Storehouse pump the powder system mainly completes coal dust conveying, and in coal dust conveying process, the coal dust ground needs to be delivered to coal
Powder cabin 34, in the case where ensureing safety, storehouse pumps the powder system using totally enclosed apparatus, pipeline, is made by qualified nitrogen
It generates flow velocity carrying coal dust in the duct for power to be conveyed, until pulverized coal bin 34.The qualified nitrogen generated by nitrogen-making device
Gas carries coal dust and enters in pulverized coal bin 34, and coal dust is collected into pulverized coal bin 34, and the nitrogen containing fraction coal dust passes through silo roof
Bag filter 50 further collects coal dust, i.e., returns to gas drawing through 50 top of silo roof bag filter from coal dust supplying nitrogen
Wind turbine 36 is sent to nitrogen supercharging recycling device, initially enters secondary ash collector 11 further by nitrogen dedusting, purification removes coal
The nitrogen of powder enters after purification after nitrogen gas tank 12, is delivered to nitrogen supercharging machine 13 and carries out pressurized treatment, is stored in pressurization after the completion
Nitrogen gas tank 16 afterwards are equipped with nitrogen content analyzer and nitrogen gas concn after the purification on nitrogen gas tank 12 and nitrogen gas tank 16 after pressurization
Analyzer, for measuring nitrogen content and concentration in it, nitrogen gas tank 12 and the nitrogen on nitrogen gas tank 16 after pressurization after purification
When content analyzer and nitrogen gas concn analyzer detect the nitrogen in it standard are not achieved, the nitrogen storage that is connected by its inlet
Gas tank 47 conveys the nitrogen of fresh qualification until up to standard, and the nitrogen gas concn and pressure value being pressurized to needed for the pump the powder system of storehouse are subsequent
It is continuous to send nitrogen to storehouse pump 49, it participates in storehouse and pumps the powder system.In view of what is entirely recycled based on nitrogen closed conveying and supercharging
The factors such as equipment needed for the powder system is more, seal for pipe joints problem and equipment are leaked out are continuously replenished during nitrogen supercharging
Qualified nitrogen, on the one hand reduces the oxygen content in coal dust transmission process in pipeline, on the other hand ensures conveying powder to air ratio.
In order to ensure that the utility model is pressurized the normal work of the powder system recycled based on nitrogen closed conveying,
Between two equipment in the utility model, it is correspondingly provided with the control pipes such as switch valve, flange form flowmeter, gate valve, check-valves, reducing
The switchgear in road.
It includes storehouse pump, outlet valve, house outlet reducing, inlet valve, intake valve, a secondary air inlet that storehouse, which pumps the powder system,
The entrance of valve, unimpeded valve and instrument control device, the storehouse pump passes through the outlet of nitrogen gas tank after pipeline connection pressurization, the instrument
Control device includes controller, level-sensing device, pressure transmitter, flowmeter and oxygen analyzer, the level-sensing device, pressure transmitter,
Flowmeter and oxygen analyzer are electrically connected controller；Instrument control device can allow user to understand in coal dust transmission process fully
The major parameters such as the material position of time of powder feeding, powder feeding pressure and pulverized coal bin are grasped, realization is automatically conveyed in time, while root
According to equipped with acoustic-optic alarm etc., realize the alarm to abnormal conditions.
Specific implementation, whole system use 3 sets of nitrogen-making devices, 1 set of nitrogen supercharging recycling device that it is equal often to cover nitrogen-making device
Including screw-rod air compressor 41, high-efficiency degreasing device 42, combination type drying machines 43, dust fine filter 44, HA grades of filters 45, PSA
Nitrogen making machine 46 each 1 is combined, the screw-rod air compressor 41 is equipped with air intake and is used for collecting air and cooling water inlet
In water inlet, cooling water outlet for draining, the outlet of the screw-rod air compressor 41 connects high-efficiency degreasing device 42 by pipeline
Air is carried out oil removing by entrance, and the outlet of the high-efficiency degreasing device 42 connects the entrance of combination type drying machines 43 by pipeline, will
Air after oil removing is dried, and the outlet of the combination type drying machines 43 connects the entrance of dust fine filter 44 by pipeline,
Air after drying is dusted, the outlet of the dust fine filter 44 connects the entrance of HA grades of filters 45 by pipeline,
The outlet of the air of rank needed for air filtration to system after rough dusting, the HA grades of filter 45 is connected by pipeline
PSA combines the entrance of nitrogen making machine 46, and the air after dedusting qualification is carried out nitrogen processed, passes through 4 50m of connection3, 1 20m3
Nitrogen air accumulator 47 and 1 10m3Instrument gas high pressure tank, the instrument with gas air accumulator use stainless steel gas storage
Tank, the entrance 48 of the outlet connection pulverized coal bunker of boiler pipeline switching valve solenoid valve box of instrument gas high pressure tank, respectively
Qualified nitrogen is stored.When needing defeated powder, then the valve of nitrogen air accumulator 47 is opened, makes to close inside nitrogen air accumulator
The nitrogen of lattice carries out defeated powder work into the pump 49 that puts in storage, while entering in nitrogen supercharging recycling device, completes to nitrogen gas concn
Supplement.
1 set of nitrogen supercharging recycling device includes 12,3 nitrogen increasings of nitrogen gas tank after 2 secondary ash collectors, 11,1 purifications
Nitrogen gas tank 14 after press 13 and 1 pressurization, is attached between each device using the pipeline of different model, can meet use
It is required that while again can be cost-effective, the model 426*6-C of first pipe 1；The model 325*6-C of second pipe 2；The
The model 273*6-C of three pipelines 3；The model 218*6-C of 4th pipeline 4；The model 108*4-C of 5th pipeline 5；6th
The model 89*4-C of pipeline 6；The model 57*3-C of 7th pipeline 7, specific location are shown in Fig. 1；Nitrogen gas tank 14 after the pressurization
Outlet connection pipeline be equipped with oxygen analyzer 15, for measures be pressurized after nitrogen purity, nitrogen gas tank 14 after the pressurization
Top be equipped with the 5th Hand-operated butterfly valve 28, the entrance of the secondary ash collector 11 passes through the air-introduced machine that pipeline connects pulverized coal bin system
36 outlet (after coal dust is delivered to pulverized coal bin by passing nitrogen, contains gas is returned to from coal dust supplying nitrogen in air-introduced machine 36
The nitrogen for having the nitrogen of fraction coal dust signified after silo roof bag filter further collects coal dust) it is delivered to two-stage dust removal
Device 11 carries out further dedusting, and nitrogen is made to reach the standard of passing nitrogen, the secondary ash collector 11 and nitrogen gas tank 12 after purification
Between successively be equipped with house outlet reducing 10, the second Hand-operated butterfly valve 22, the first reducing 17, the second reducing 18, the first shut-off valve
29, it is equipped with the first pneumatic ball valve 26, the 4th Hand-operated butterfly valve 27 on the 5th pipeline 5 of branch, is opened for pipeline close；It is described
First manual butterfly valve 21, the 4th shut-off valve 37 are equipped between air-introduced machine 36 and secondary ash collector 11 successively, for first pipe 1
Switch, the secondary ash collector 11 outlet by pipeline connection purify after nitrogen gas tank 12 entrance, nitrogen after the purification
The first shut-off valve 29, the second reducing 18, third Hand-operated butterfly valve 23, first are equipped between tank 12 and nitrogen supercharging machine 13 successively to turn off
Valve 29, for the switch to pipeline, the volume of nitrogen gas tank 12 is 75m after the purification3, lower section is equipped with the first unimpeded valve 39 and the
One sewage draining exit 8, exporting for nitrogen gas tank 12 passes through the entrance that pipeline connects nitrogen supercharging machine 13 after the purification, the nitrogen supercharging
Machine 13 carries out pressurized treatments to purified nitrogen, and the outlet of the nitrogen supercharging machine 13 passes through nitrogen gas tank after pipeline connection pressurization
14 entrance, the volume of nitrogen gas tank 14 is 20m after the pressurization3, lower section is equipped with the second unimpeded valve 40 and the second sewage draining exit 9, institute
State pressurization after nitrogen gas tank 14 outlet by pipeline connections storehouse pump the powder system, after the purification nitrogen gas tank 12 and pressurization after nitrogen
The entrance of gas tank 14 is also associated with the outlet of nitrogen air accumulator 47 by pipeline, for inputting qualified nitrogen；The two level is removed
The entrance of dirt device 11 is also associated with the outlet of nitrogen air accumulator 47 by the 7th pipeline 7, and the 7th pipeline 7 is equipped with ball valve
38, for inputting qualified nitrogen, the oxygen content in pipeline in coal dust transmission process is reduced, while ensureing to convey powder to air ratio.Institute
It is equipped with third shut-off valve 31, third reducing 35, the manual ball of third successively between nitrogen gas tank 14 after stating nitrogen supercharging machine 13 and pressurizeing
Valve 33, knife gate valve 24 and the second shut-off valve 30, for the switch to pipeline, the nitrogen air accumulator 47 and nitrogen gas tank 14 after pressurization
Between be connected with manual ball valve 25 by the 5th pipeline；By being equipped between nitrogen gas tank 12 after the nitrogen air accumulator 47 and purification
Manual ball valve 25 is connected with the 5th pipeline 5 of flange form flowmeter 32.
Fig. 2 is the pulverized coal bin nitrogen recycling system schematic in the utility model, and air-introduced machine 36 is by the nitrogen containing coal dust
After 50 dedusting of silo roof bag filter, by using on main road pneumatic ball valve reducing 19 and the second pneumatic ball valve 20 by its
Send to nitrogen supercharging recycling device, be dusted, pressurize after recycle；If without this operation, bypass is used
Pneumatic ball valve reducing 19 and the second pneumatic ball valve 20 carry out emptying processing to the nitrogen for going out by silo roof bag filter 50.
There are 2 silo roof bag filters 50, the lower section of silo roof bag filter 50 to be equipped with 6 ash buckets in Fig. 4；For collecting
Coal dust ash.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the utility model example,
And it does not limit the embodiments.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And thus
Among changes and variations that derived from are still in the scope of protection of the utility model.
Claims (5)
1. a kind of the powder system based on nitrogen closed conveying and supercharging recycling, it is characterised in that：It is supplied by nitrogen circulation and is
System, pulverized coal bin system and storehouse pump the powder system are constituted；
The nitrogen circulation supply system is made of nitrogen-making device and nitrogen supercharging recycling device；
The nitrogen-making device includes screw-rod air compressor (41), high-efficiency degreasing device (42), combination type drying machines (43), dust-filtering
Device, PSA combination nitrogen making machines (46), the screw-rod air compressor (41) are equipped with air intake, the screw-rod air compressor (41)
Outlet connects the entrance of high-efficiency degreasing device (42) by pipeline, and the outlet of the high-efficiency degreasing device (42) is connected by pipeline combines
The entrance of formula drying machine (43), the outlet of the combination type drying machines (43) connect the entrance of dust filter unit, institute by pipeline
The outlet for stating dust filter unit connects the outlet that PSA combines nitrogen making machine (46) by pipeline；
The nitrogen-making device further includes nitrogen air accumulator (47), and the outlet of the PSA combination nitrogen making machines (46) is connected by pipeline
The outlet of the entrance of nitrogen air accumulator (47), the nitrogen air accumulator (47) pumps the powder system by pipeline connections storehouse and nitrogen increases
Press recycling device；
The nitrogen supercharging recycling device includes nitrogen gas tank (12), nitrogen supercharging machine (13) after secondary ash collector (11), purification
Pulverized coal bin system is connected by pipeline with the entrance of nitrogen gas tank after pressurization (14), the secondary ash collector (11), the two level is removed
The outlet of dirt device (11) is by the entrance of nitrogen gas tank (12) after pipeline connection purification, and the outlet of nitrogen gas tank (12) is logical after the purification
Piping connects the entrance of nitrogen supercharging machine (13), and the outlet of the nitrogen supercharging machine (13) passes through nitrogen after pipeline connection pressurization
The entrance of tank (14), the outlet of nitrogen gas tank (14) is by pipeline connections storehouse pump the powder system after the pressurization, nitrogen after the purification
The entrance of nitrogen gas tank (14) is also associated with the outlets of nitrogen air accumulator (47) by pipeline after gas tank (12) and pressurization, and described two
The entrance of grade deduster (11) is also associated with the outlet of nitrogen air accumulator (47) by pipeline, and secondary ash collector (11) enter
Mouth is also associated with pulverized coal bin system；
The pulverized coal bin system includes pulverized coal bin (34), silo roof bag filter (50) and air-introduced machine (36), the silo roof cloth bag
Deduster (50) is set to the top of pulverized coal bin (34), and the entrance of silo roof bag filter (50) connects pulverized coal bin by pipeline
(34) outlet, the air-introduced machine (36) are set to the top of silo roof bag filter (50), and the entrance connection of air-introduced machine (36)
The outlet of the outlet of silo roof bag filter (50), the air-introduced machine (36) connects entering for secondary ash collector (11) by pipeline
Mouthful；
Storehouse pump the powder system includes storehouse pump (49), outlet valve, house outlet reducing, inlet valve, an intake valve, secondary
The entrance of intake valve, unimpeded valve and instrument control device, the storehouse pump (49) passes through nitrogen gas tank (14) after pipeline connection pressurization
Outlet.
2. the powder system according to claim 1 based on nitrogen closed conveying and supercharging recycling, which is characterized in that institute
It includes dust fine filter (44), HA grades of filters (45) to state dust filter unit, and the entrance of the dust fine filter (44) passes through pipe
Road connects combination type drying machines (43), and the outlet of the dust fine filter (44) connects entering for HA grades filter (45) by pipeline
Mouthful, the outlet of the HA grades of filter (45) connects the entrance that PSA combines nitrogen making machine (46), the PSA combinations system by pipeline
Nitrogen machine (46) includes 2 surge tanks and 2 adsorption towers, and the outlet of the HA grades of filter (45) is separately connected 2 by pipeline
The entrance of adsorption tower, the entrance of the outlet connection surge tank of each adsorption tower, the outlet of the surge tank connects nitrogen storage
The entrance of gas tank (47).
3. the powder system according to claim 1 based on nitrogen closed conveying and supercharging recycling, which is characterized in that institute
It includes controller, level-sensing device, pressure transmitter, flowmeter and oxygen analyzer to state instrument control device, and the level-sensing device, pressure become
Device, flowmeter and oxygen analyzer is sent to be electrically connected controller.
4. the powder system according to claim 1 based on nitrogen closed conveying and supercharging recycling, which is characterized in that institute
It further includes audible-visual annunciator, equipment anti-blockage structure and pipeline anti-blockage structure to state storehouse pump the powder system；The equipment is anti-blocking
Plug structure includes sewage draining exit, and the audible-visual annunciator is electrically connected controller.
5. the powder system according to claim 1 based on nitrogen closed conveying and supercharging recycling, which is characterized in that institute
It further includes instrument gas high pressure tank (48) to state nitrogen-making device, and the instrument is stored up with gas high pressure tank (48) using stainless steel
Gas tank, the entrance of the outlet connection pulverized coal bunker of boiler pipeline switching valve solenoid valve box of instrument gas high pressure tank (48),
The entrance of instrument gas high pressure tank (48) connects the outlet of HA grades of filters (45) by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376934.9U CN207973234U (en) | 2018-03-20 | 2018-03-20 | The powder system based on nitrogen closed conveying and supercharging recycling |
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| CN201820376934.9U CN207973234U (en) | 2018-03-20 | 2018-03-20 | The powder system based on nitrogen closed conveying and supercharging recycling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328338A (en) * | 2018-03-20 | 2018-07-27 | 天津市津能工程管理有限公司 | The powder system based on nitrogen closed conveying and supercharging recycling |
| CN112173718A (en) * | 2020-09-30 | 2021-01-05 | 安徽维嵩生产力促进有限公司 | Automatic pulse creeping type concentrated phase pneumatic conveying system for whole pipe system |
-
2018
- 2018-03-20 CN CN201820376934.9U patent/CN207973234U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328338A (en) * | 2018-03-20 | 2018-07-27 | 天津市津能工程管理有限公司 | The powder system based on nitrogen closed conveying and supercharging recycling |
| CN108328338B (en) * | 2018-03-20 | 2023-09-08 | 天津市津能工程管理有限公司 | Powder conveying system based on nitrogen gas airtight conveying and pressurizing recycling |
| CN112173718A (en) * | 2020-09-30 | 2021-01-05 | 安徽维嵩生产力促进有限公司 | Automatic pulse creeping type concentrated phase pneumatic conveying system for whole pipe system |
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