CN205151192U - High densification looks pneumatic conveyor of forced lubrication formula - Google Patents
High densification looks pneumatic conveyor of forced lubrication formula Download PDFInfo
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- CN205151192U CN205151192U CN201520977551.3U CN201520977551U CN205151192U CN 205151192 U CN205151192 U CN 205151192U CN 201520977551 U CN201520977551 U CN 201520977551U CN 205151192 U CN205151192 U CN 205151192U
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Abstract
The utility model discloses a high densification looks pneumatic conveyor of forced lubrication formula utilizes the powder material feeding device of the high densification looks air conveying of forced lubrication formula in order to provide super concentrated phase, high stable mass flow rate, has greatly simplified conveying system and a structure of sending out material jar, avoided the structure of fluidization pot -type formula complicated, jar internal flow wind transmission control is had relatively high expectations, the conveyer pipe in to the jar powder fluidization and whole flow unfavorable etc. Not enoughly, saved the investment, conveyor need not any power running component simultaneously for the security of high pressure conveyor has obtained more effectively guaranteeing. The utility model discloses the conveyor gas -solid velocity of flow is little, and the gas -solid impact abrasion very reduce, has improved device wearability and life greatly, and conveyor is reliable and stable, has better regulatory function, has avoided carrying unstable influence to the subsequent handling, and its effect of technology especially higher to air conveying terminal subsequent handling stability requirement and super high coal powder concentration is more showing.
Description
Technical field
The utility model relates to a kind of pressure sending type high pressure Dense Phase Pneumatic Conveying that utilizes to provide the powder material feedway of ultra-dense phase, high stable mass flowrate, it is specially adapted to dry pulverized coal hydrogenation coal gasification, IGCC generating, chemical industry, metallurgy fly, etc. processing industry obtain powder material conveying.
Background technology
Pneumatic conveyer makes material carry out the mode of carrying by the route of specifying by the energy (kinetic energy or static energy) of gas in the duct.Air-transport system is due to the difference of demand, and its type and structure have variety.Nearly recent decades, Pneumatic Conveying Technology undergoes an unusual development rapidly, and especially along with the development of dry coal powder pressure gasifying and hydrogasification, IGCC technology, high pressure Dense Phase Pneumatic Conveying technology receives increasing concern.
Stable high concentration pulverized coal supply realizes the gasification of high pressure dry coal powder and burning process is stablized, the critical support condition of safety, Effec-tive Function.Current high pressure dry coal powder gasifying process mostly is fluidisation pot type high pressure Dense Phase Pneumatic Conveying technology.Disclosed technology such as CN1274568C, CN101798022B etc. all adopt streaming tank to carry out high pressure Dense Phase Pneumatic Conveying with top discharge, bottom discharge or side discharging form, its transfer pot structure relative complex, in tank, fluidized wind control overflow is higher, and delivery pipe must go deep into fluidisation area in tank, overall flow in tank is had a certain impact; Simultaneously because conveying is in fluidization, its pulverized coal conveying relative concentration is limited, for requiring that the high pressure dry coal powder hydrogasification technique of higher coal powder density is not very suitable.CN1032746 adopts the sending cans of bottom discharge form, but it is furnished with air flow inlet around conical discharge port, and the size that air-flow injects is comparatively large on the impact of flowing in tank, be unfavorable for carrying stability contorting, and coal powder density is relatively low.CN103213845A installs a rotary pocket feeder to control material flow rate bottom batch can, and this makes issuance of materials tank set up power running parts, and high-pressure system safety is had a strong impact on.GSP (Xu Zhengang, the palace moonlight, clean coal technology, GSP forced air bed technique and the application prospect in China thereof, 4th volume the 3rd phase P9-11 in 1998) coal-feeding device of pressurized gasifier time export coal dust on the top of tank, but a mixer is set bottom it, rotatable parts are set in high-tension apparatus and cause complex structure, easy et out of order, and the safety and reliability affecting device.The utility model is the problems and shortcomings overcoming above-mentioned Multiple techniques, proposes a kind of simple type bottom discharge pressure sending type High-pressure Super Dense-phase Pneumatic conveyer.
Utility model content
Utility model object: for above-mentioned prior art, proposes a kind of novel pressure sending type high pressure dense-phase pneumatic conveying device, can stablize the powder conveying realizing under high pressure superelevation concentrated phase, improves equipment reliability of operation and controllability.
Technical scheme: a kind of pressure sending type high pressure dense-phase pneumatic conveying device, comprises bottom discharge formula issuance of materials tank, and the top end socket of described bottom discharge formula issuance of materials tank is provided with pressurising mouth, powder import, nitrogen replacement gas pressurising mouth;
The lower body part of described bottom discharge formula issuance of materials tank is cone bucket, the outlet of described cone bucket is linked in sequence the first straight length, the first contraction section, the second straight length, the second contraction section successively, the outlet of described second contraction section is by arc powder conveying pipe connecting conveying pipe line, and the outlet of described diffuser is connected to the entrance of gasification furnace by imported valve; Described second straight length is provided with high pressure sealing ball valve, and described first straight length side is provided with loosening wind entrance, and described arc powder conveying pipe is provided with tangential feed adjustment wind entrance, and described diffuser is provided with differential pressure measuring installation;
Source of the gas exports and is divided into three tunnels, is communicated to pressurising mouth, loosening wind entrance, tangential feed adjustment wind entrance respectively by flow counter and control cock.
Further, the cone bucket bus angle of described bottom discharge formula issuance of materials tank bottom cone bucket is 15-45 degree.
Further, the contraction cone wire clamp angle of described first contraction section and the second contraction section is 15-45 degree.
Further, the R/D ratio of described arc powder conveying pipe is more than or equal to 8.
Beneficial effect: a kind of pressure sending type high pressure dense-phase pneumatic conveying device of the present utility model, greatly simplifie the structure of delivery system and issuance of materials tank, avoid that fluidized wind control overflow in the complex structure of streaming tank form, tank is higher, delivery pipe to powder fluidization in tank and the deficiency such as overall flow is unfavorable, save investment; Feedway is without the need to any power running parts simultaneously, high pressure delivery system safety is obtained and more effectively ensures.Obtain through bench-scale experiment, utilize device of the present utility model can realize the powder pneumatic conveying of ultrahigh concentration, coal dust volume concentration is up to 0.35-0.48, and under being pumped (conveying) medium situation for hydrogen, pulverized coal conveying solid-gas ratio is up to 215kg coal dust/kg hydrogen.
The utility model feedway gas-solid flow velocity is little, and gas-solid impact wear greatly reduces, and substantially increases device resistance to abrasion and service life; Feedway of the present utility model is reliable and stable, has good regulatory function, avoids the unstable impact on subsequent handling of conveying, especially requires that its effect of technique that is higher and superelevation coal powder density is more remarkable to Geldart-D particle SS later process stability.
Accompanying drawing explanation
Fig. 1 is transport conveyor constructions schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing the utility model done and further explain.
As shown in Figure 1, a kind of pressure sending type high pressure dense-phase pneumatic conveying device, comprise bottom discharge formula issuance of materials tank 1, the top end socket of bottom discharge formula issuance of materials tank 1 is provided with pressurising mouth 201, powder import 202, relief port 203, relief valve connection 204, nitrogen replacement gas pressurising mouth 205, nitrogen replacement gas relief port 206.The lower body part of issuance of materials tank 1 is cone bucket, and in order to ensure the freely downward overall flow of powder in issuance of materials tank, cone bucket bus angle is set to 15-45 degree.Cone bucket sidewall is provided with gas sample mouth 207, temperature surveys mouth 208, pressure surveys mouth 209.
First straight length 3 of the bottom cone bucket outlet vertical connecting setting of issuance of materials tank 1, the sidewall of the first straight length 3 is provided with the entrance 210 of loosening wind, be mainly used in preventing powder in tank from putting up a bridge in tank or forming channel, can ensure that powder is in loose condition (of surface) and can proper flow in issuance of materials tank.The first contraction section 4 connected in the lower part outlet position of the first straight length 3, first contraction section 4 is pyramidal structure, its angle shrinking cone line is 15-45 degree, and this structure can draw powder and conveying gas downwards, to ensure the free overall flow downwards of powder in the first contraction section 4.The lower part outlet of the first contraction section 4 is connected with the second straight length 5 vertically arranged, and this straight length is connected with high pressure sealing ball valve 6, it flows downward for controlling coal dust and transport gas mixture in issuance of materials tank 1.It is pyramidal structure that high pressure sealing ball valve 6 bottom is connected with the second contraction section 7, second contraction section 7, and it shrinks cone wire clamp angle is 15-45 degree, to ensure powder freely downward overall flow in the second contraction section 7.The lower part outlet position of the second contraction section 7 connects arc powder conveying pipe 8, the R/D ratio of arc powder conveying pipe 8 is more than or equal to 8, the arc of arc powder conveying pipe 8 is provided with tangential feed adjustment wind entrance, it is mainly used in the drainage before powder conveying, ensures that powder conveying enters normal feed status; Simultaneously when needs regulate conveying solid-gas ratio, realize by regulating tangential feed adjustment wind.The outlet connecting conveying pipe line 17 of arc powder conveying pipe 8, the outlet of diffuser 17 is connected to the entrance of gasification furnace 20 by imported valve 19, and on export pipeline, be provided with differential pressure measuring device.
In the present embodiment, diffuser 17 has horizontal segment and vertical end, and on diffuser 17, all bend pipes all adopt curve bend to connect, and its R/D ratio is all more than or equal to 8.In order to accurately measure the pressure reduction between issuance of materials tank and gasification furnace, respectively the first differential pressure measuring installation 16, second differential pressure measuring installation 18 is set at the horizontal segment of diffuser 17 and vertical section.It should be noted that, in order to ensure leak tightness, the second straight length 5 being provided with two high pressure sealing ball valves 6.R/D is the bend pipe arc radius of arc powder conveying pipe and pipe diameter ratio.
Source of the gas 15 can be hydrogen or carbon dioxide or nitrogen, and source of the gas 15 exports and is divided into three tunnels, and the first via is connected to pressurising mouth 201 by the distinguished and admirable gauge 9 of pressurising and pressurising wind control cock 10; Second tunnel is connected to loosening wind entrance 210 by loosening distinguished and admirable gauge 11 and loosening wind control cock 12; 3rd tunnel regulates distinguished and admirable gauge 13 and the tangential tangential feed adjustment wind entrance regulating wind control cock 14 to be connected to arc powder conveying pipe 8 by tangential.
Based on above-mentioned pressure sending type high pressure dense-phase pneumatic conveying device, to supply coal dust to high pressure dry coal powder hydrogasification stove, be specially:
According to process requirements, first normal pressure nitrogen purging is carried out to delivery system, ensure that oxygen content is less than 0.4%.Then add conveying powder to issuance of materials tank 1 by the powder import 202 on bottom discharge formula issuance of materials tank 1, when carrying powder to be added to certain material level, stopping feeding in raw material and closing reinforced valve.Be filled with nitrogen from nitrogen replacement gas pressurising mouth 205 again, with the air in nitrogen replacement issuance of materials tank, ensure that the content of oxygen is less than 0.4%.
Utilize the pressurising mouth 201 of bottom discharge formula issuance of materials tank 1 and loosening wind entrance 210 in issuance of materials tank, to be filled with pumped (conveying) medium hydrogen simultaneously, when the pressure in issuance of materials tank is in 6.0-8.0Mpa scope, stop being filled with of hydrogen, pressure in maintenance issuance of materials tank higher than gasification furnace 20 operation pressure 0.1-0.8Mpa, and makes coal dust powder be in loose condition (of surface) in issuance of materials tank.
First the imported valve 19 diffuser 17 connecting gasification furnace 20 is opened, then pumped (conveying) medium is filled with by the tangential feed adjustment wind entrance on arc powder conveying pipe 8, make the superficial gas velocity of initial delivery wind in diffuser 17 at more than 0.8m/s, make in delivery pipe, to be initially in normal dredging state.
Open the twice high pressure sealing ball valve 6 on the second straight length 5, under pressure differential between issuance of materials tank 1 and gasification furnace, in issuance of materials tank 1, coal dust flows downward and enters the second contraction section 7 together with transport gas mixture, enter normal powder high-pressure delivery state, the arc powder conveying pipe 8 of bottom connection is exported through the second contraction section 7, and be mixed with the tangential feed adjustment wind at this place and enter coal chute, finally enter coal gasifier nozzle, enter gasification furnace 20.
According to the detected value of the differential pressure measuring installation on diffuser 17, the aperture of the control cock of control linkage pressurising mouth 201 and loosening wind entrance 210, to maintain between issuance of materials tank and gasification furnace pressure reduction between 0.1-0.8Mpa.According to actual conditions, after conveying reaches stable conveying, the tangential feed adjustment wind on arc powder conveying pipe can be closed.When needs regulate coal dust conveying solid-gas ratio, realized by the aperture of the control cock of control linkage tangential feed adjustment wind entrance.
When in issuance of materials tank, coal dust amount drops to the 30-50% of capacity, constant for ensureing issuance of materials tank 1 internal pressure, the coal dust be in in the transformation tank of issuance of materials tank uniform pressure is added issuance of materials tank from powder import 202.When continuing to add coal dust, need ensure that the oxygen content in issuance of materials tank 1 is less than 0.4%.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a pressure sending type high pressure dense-phase pneumatic conveying device, it is characterized in that: comprise bottom discharge formula issuance of materials tank (1), the top end socket of described bottom discharge formula issuance of materials tank (1) is provided with pressurising mouth (201), powder import (202), nitrogen replacement gas pressurising mouth (205);
The lower body part of described bottom discharge formula issuance of materials tank (1) is cone bucket, the outlet of described cone bucket is linked in sequence the first straight length (3), the first contraction section (4), the second straight length (5), the second contraction section (7) successively, the outlet of described second contraction section (7) is by arc powder conveying pipe (8) connecting conveying pipe line (17), and the outlet of described diffuser (17) is connected to the entrance of gasification furnace (20) by imported valve (19); Described second straight length (5) is provided with high pressure sealing ball valve (6), described first straight length (3) side is provided with loosening wind entrance (210), described arc powder conveying pipe (8) is provided with tangential feed adjustment wind entrance, and described diffuser (17) is provided with differential pressure measuring installation (16);
Source of the gas (15) exports and is divided into three tunnels, is communicated to pressurising mouth (201), loosening wind entrance (210), tangential feed adjustment wind entrance respectively by flow counter and control cock.
2. a kind of pressure sending type high pressure dense-phase pneumatic conveying device according to claim 1, is characterized in that: the cone bucket bus angle of described bottom discharge formula issuance of materials tank (1) bottom cone bucket is 15-45 degree.
3. a kind of pressure sending type high pressure dense-phase pneumatic conveying device according to claim 1, is characterized in that: the contraction cone wire clamp angle of described first contraction section (4) and the second contraction section (7) is 15-45 degree.
4. a kind of pressure sending type high pressure dense-phase pneumatic conveying device according to claim 1, is characterized in that: the R/D ratio of described arc powder conveying pipe (8) is more than or equal to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977551.3U CN205151192U (en) | 2015-12-01 | 2015-12-01 | High densification looks pneumatic conveyor of forced lubrication formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977551.3U CN205151192U (en) | 2015-12-01 | 2015-12-01 | High densification looks pneumatic conveyor of forced lubrication formula |
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| CN205151192U true CN205151192U (en) | 2016-04-13 |
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| CN201520977551.3U Withdrawn - After Issue CN205151192U (en) | 2015-12-01 | 2015-12-01 | High densification looks pneumatic conveyor of forced lubrication formula |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347040A (en) * | 2015-12-01 | 2016-02-24 | 东南大学 | Pressure feed type high-pressure dense-phase pneumatic conveying device and pneumatic conveying method |
| CN108083607A (en) * | 2017-11-08 | 2018-05-29 | 上海锅炉厂有限公司 | A kind of sludge drying coupling coal generating system and method |
| CN108946176A (en) * | 2017-05-19 | 2018-12-07 | 中国石化工程建设有限公司 | A kind of devices and methods therefor of catalyst safe transport between mutual exclusion environment |
| CN108940128A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of device and method of catalyst circulation conveying between hydrogen-oxygen environment |
| CN109603677A (en) * | 2018-11-23 | 2019-04-12 | 北京万向新元科技股份有限公司 | A kind of damaged tire cracking black carbon pelletizing finished product feeding system |
-
2015
- 2015-12-01 CN CN201520977551.3U patent/CN205151192U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347040A (en) * | 2015-12-01 | 2016-02-24 | 东南大学 | Pressure feed type high-pressure dense-phase pneumatic conveying device and pneumatic conveying method |
| CN108946176A (en) * | 2017-05-19 | 2018-12-07 | 中国石化工程建设有限公司 | A kind of devices and methods therefor of catalyst safe transport between mutual exclusion environment |
| CN108940128A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of device and method of catalyst circulation conveying between hydrogen-oxygen environment |
| CN108940128B (en) * | 2017-05-19 | 2021-05-18 | 中国石油化工股份有限公司 | Device and method for circularly conveying catalyst in hydrogen-oxygen environment |
| CN108083607A (en) * | 2017-11-08 | 2018-05-29 | 上海锅炉厂有限公司 | A kind of sludge drying coupling coal generating system and method |
| CN109603677A (en) * | 2018-11-23 | 2019-04-12 | 北京万向新元科技股份有限公司 | A kind of damaged tire cracking black carbon pelletizing finished product feeding system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160413 Effective date of abandoning: 20180814 |