CN107281979B - Closed solid material feeding method for reaction kettle - Google Patents

Closed solid material feeding method for reaction kettle Download PDF

Info

Publication number
CN107281979B
CN107281979B CN201710716998.9A CN201710716998A CN107281979B CN 107281979 B CN107281979 B CN 107281979B CN 201710716998 A CN201710716998 A CN 201710716998A CN 107281979 B CN107281979 B CN 107281979B
Authority
CN
China
Prior art keywords
valve
nitrogen
feeding
bin
reaction kettle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710716998.9A
Other languages
Chinese (zh)
Other versions
CN107281979A (en
Inventor
张超
丁伟军
柴键
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Engineering Group Co Ltd
Sinopec Shanghai Engineering Co Ltd
Original Assignee
Sinopec Engineering Group Co Ltd
Sinopec Shanghai Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinopec Engineering Group Co Ltd, Sinopec Shanghai Engineering Co Ltd filed Critical Sinopec Engineering Group Co Ltd
Priority to CN201710716998.9A priority Critical patent/CN107281979B/en
Publication of CN107281979A publication Critical patent/CN107281979A/en
Application granted granted Critical
Publication of CN107281979B publication Critical patent/CN107281979B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Cleaning In General (AREA)

Abstract

The invention relates to a closed feeding method of solid materials in a reaction kettle, which aims to solve the technical problems of dust hazard, difficulty in completely closed feeding and difficulty in cleaning in the prior art. The invention adopts the solid material closed feeding method of the reaction kettle, realizes the completely closed feeding and the non-oxidation operation of the materials, solves the problem of the influence of the toxic and allergic solid materials on the safety and the health of personnel, improves the production safety and the product quality, obtains better technical effect, and can be used for feeding the solid materials of the reaction kettle.

Description

Closed solid material feeding method for reaction kettle
Technical Field
The invention relates to a closed solid material feeding method for a reaction kettle.
Background
In recent years, with the improvement of the living standard of people, the attention on safe production is increasing. Especially in the pharmaceutical chemical production, a large amount of solvent is used. If the solvent is used in the reaction kettle, nitrogen protection is required in the production process. In this case, the open operation cannot be performed, so that the requirements can be well compensated by a fully-closed mode and feeding in a mode of automatic nitrogen replacement and online cleaning.
The material mode is mostly opened to throw in the tradition, and one is that the material in-process is thrown again to menstruum steam nitrogen gas in the reation kettle and overflows or solid material can throw the material in-process raise dust, can't accomplish totally closed throwing the material, can cause very big risk to operating personnel and production quality. The conventional feeding mode is difficult to clean completely after feeding is finished every time, and particularly solid materials are often stuck to corners of the feeding device after being wetted, so that the cleaning of the feeding device is very important. For example, the technology described in "a reaction kettle with a closed solid feeding device" (application number: CN201520829836.2) can solve the problem of closed feeding, but cannot solve the feeding and cleaning of viscous materials, easily adheres to the surfaces of equipment and valves, cannot perform more cleaning, affects the feeding precision on one hand, and is easy to block materials and damage valves easily.
The solid material closed feeding consideration conditions of the reaction kettle are as follows: the first aspect is that the dust during feeding is considered, the dustless operation is achieved as much as possible, the second aspect is that air cannot be mixed into the dust during feeding and the dust is fed into the reaction kettle together, and nitrogen is required to be replaced and then the dust can be fed. The third aspect is that the online cleaning can be ensured to be thorough, and the equipment has no dead angle.
Disclosure of Invention
The invention aims to solve the technical problems of dust hazard, difficulty in completely closed feeding, difficulty in cleaning and the like in the prior art, and provides a novel closed solid material feeding method for a reaction kettle. The method can realize completely closed feeding, realize no oxidation of materials and realize online cleaning.
In order to solve the problems, the technical scheme adopted by the invention is as follows: a closed solid material feeding method for a reaction kettle comprises the following steps:
a) and (3) during the bag unloading process: the big bag (2) filled with the raw materials is conveyed to a feed inlet of the buffer bin (3) by the electric hoist (1), and the fan (4) is started to exhaust air; connecting the big bag (2) with a feeding port of the buffer bin (3), unfastening the opening of the big bag and starting feeding; negative pressure exists in the buffer bin (3), and dust carried by air is discharged through the fan (4) through the dust removal filter (5);
b) in the nitrogen replacement process: after the feeding is finished, the upper gate valve (6) is opened, the material enters the storage bin (15) through gravity, then the upper gate valve (6) is closed, the nitrogen valve (8) and the exhaust valve (11) are opened, the storage bin (15) is subjected to nitrogen purging and replacement after the nitrogen is decompressed through the self-operated regulating valve (9), meanwhile, air is discharged through the filter (10) and the exhaust valve (11), and the nitrogen replacement is finished;
c) when the feeding process is carried out: after the replacement is finished, closing the exhaust valve (11), opening the lower gate valve (18), and feeding the materials into the reaction kettle (19) through gravity; in the feeding process, along with the reduction of the pressure of the buffer bin (3), the nitrogen supplements and balances the internal pressure through a self-operated regulating valve (9); according to the properties of different materials, a compressed air valve (12) is opened, and a storage bin (15) is vibrated by a vibration hammer (13) to dredge the accumulated materials; the reaction kettle realizes nitrogen sealing through a self-operated regulating valve (14) and a back pressure valve (17), and the lower gate valve (18) and the nitrogen valve (8) are closed after the feeding is finished;
d) and during the cleaning and drying process: after the feeding process is finished, a cleaning water valve (7) is opened, a storage bin (15) is cleaned through a spray header (16), and after the cleaning is finished, a lower gate valve (18) is opened to discharge the wastewater into the reaction kettle; and opening a nitrogen valve (8) and an exhaust valve (11), purging the storage bin (15), and closing the nitrogen valve (8) and the exhaust valve (11) after purging is finished.
In the above technical solution, preferably, each operation is preset in the control system, and the whole operation process is manually started.
Among the above-mentioned technical scheme, preferably, install dust removal filter (5) and corresponding exhaust pipe and fan (4) on buffering feed bin (3), prevent to throw the material in-process raise dust.
In the technical scheme, preferably, the solid material needs to be replaced by nitrogen through the bin (15) before being put into the reaction kettle (19).
In the above technical solution, preferably, a spray header (16) for online cleaning is installed in the bin (15).
Among the above-mentioned technical scheme, preferably, buffering feed bin (3) bottom links to each other with feed bin (15) top, and feed bin (15) bottom links to each other with reation kettle upper portion.
In the technical scheme, preferably, nitrogen is subjected to nitrogen purging replacement on the storage bin (15) after the nitrogen is decompressed through the self-operated regulating valve (9), and the blowing replacement time is 3-7 minutes.
In the technical scheme, preferably, the nitrogen valve (8) and the exhaust valve (11) are opened to purge the storage bin (15), and the purging time is 8-12 minutes.
The invention relates to a closed feeding method of solid materials in a reaction kettle, which aims to solve the technical problems of dust hazard, difficulty in completely closed feeding, difficulty in cleaning and the like in the prior art. By adopting the novel closed solid material feeding method of the reaction kettle, the method can realize completely closed feeding and non-oxidation operation of the materials, solves the problem that toxic and allergic solid materials have influence on the safety and health of personnel, improves the production safety and the product quality, and obtains better technical effects.
Drawings
FIG. 1 is a flow chart of a closed solid material feeding device of a reaction kettle;
FIG. 2 is a detailed view of a closed solid material feeding device of a reaction kettle;
in fig. 1-2: the device comprises an electric hoist 1, a big bag 2, a buffer bin 3, a fan 4, a dust removal filter 5, an upper gate valve 6, a cleaning water valve 7, a nitrogen valve 8, a self-operated regulating valve 9, a filter 10, an exhaust valve 11, a compressed air valve 12, a vibrating hammer 13, a self-operated regulating valve 14, a bin 15, a spray header 16, a back pressure valve 17, a lower gate valve 18 and a reaction kettle 19.
The present invention will be further illustrated by the following examples, but is not limited to these examples.
Detailed Description
[ example 1 ]
A closed solid material feeding method for a reaction kettle is shown in figures 1-2 and comprises the following steps:
a) and (3) during the bag unloading process: the big bag (2) filled with the raw materials is conveyed to a feed inlet of the buffer bin (3) by the electric hoist (1), and the fan (4) is started to exhaust air; connecting the big bag (2) with a feeding port of the buffer bin (3), unfastening the opening of the big bag and starting feeding; negative pressure exists in the buffer bin (3), and dust carried by air is discharged through the fan (4) through the dust removal filter (5);
b) in the nitrogen replacement process: after the feeding is finished, the upper gate valve (6) is opened, the material enters the storage bin (15) through gravity, then the upper gate valve (6) is closed, the nitrogen valve (8) and the exhaust valve (11) are opened, the storage bin (15) is subjected to nitrogen purging and replacement after the nitrogen is decompressed through the self-operated regulating valve (9), meanwhile, air is discharged through the filter (10) and the exhaust valve (11), and the nitrogen replacement is finished;
c) when the feeding process is carried out: after the replacement is finished, closing the exhaust valve (11), opening the lower gate valve (18), and feeding the materials into the reaction kettle (19) through gravity; in the feeding process, along with the reduction of the pressure of the buffer bin (3), the nitrogen supplements and balances the internal pressure through a self-operated regulating valve (9); according to the properties of different materials, a compressed air valve (12) is opened, and a storage bin (15) is vibrated by a vibration hammer (13) to dredge the accumulated materials; the reaction kettle realizes nitrogen sealing through a self-operated regulating valve (14) and a back pressure valve (17), and the lower gate valve (18) and the nitrogen valve (8) are closed after the feeding is finished;
a) and during the cleaning and drying process: after the feeding process is finished, a cleaning water valve (7) is opened, a storage bin (15) is cleaned through a spray header (16), and after the cleaning is finished, a lower gate valve (18) is opened to discharge the wastewater into the reaction kettle; and opening a nitrogen valve (8) and an exhaust valve (11), purging the storage bin (15), and closing the nitrogen valve (8) and the exhaust valve (11) after purging is finished.
A pharmaceutical factory is mainly used for producing bulk drugs, the solid feeding amount is 1000kg, and powdery materials are prepared by adopting the method. The following data were obtained:
the time of the feeding process is as follows: 0.5 hour
Setting personnel at a workshop section: the number of operators was 1.
Combustible gas leakage is not monitored in the feeding process.
And after the feeding is finished and the on-line cleaning is finished, observing that no solid remains in the bin.
[ example 2 ]
According to the conditions described in example 1, a pharmaceutical factory was mainly used to produce bulk drug, with a 1000kg solids loading, granular material, using the method of the present invention. The following data were obtained:
the time of the feeding process is as follows: 0.5 hour
Setting personnel at a workshop section: the number of operators was 1.
Combustible gas leakage is not monitored in the feeding process.
And after the feeding is finished and the on-line cleaning is finished, observing that no solid remains in the bin.
[ COMPARATIVE EXAMPLE 1 ]
A pharmaceutical factory is mainly used for producing bulk drugs, the solid feeding amount is 1000kg, and powdery materials adopt a traditional method. The following data were obtained:
the time of the feeding process is as follows: 0.5 hour
Setting personnel at a workshop section: the number of operators was 1.
Combustible gas leakage is monitored in the feeding process.
At the end of the batch, residual solids in the batch unit were observed.
[ COMPARATIVE EXAMPLE 2 ]
A pharmaceutical factory is mainly used for producing bulk drugs, the solid feeding amount is 1000kg, and granular materials are produced by adopting a traditional method. The following data were obtained:
the time of the feeding process is as follows: 0.5 hour
Setting personnel at a workshop section: the number of operators was 1.
Combustible gas leakage is monitored in the feeding process.
At the end of the batch, residual solids in the batch unit were observed.
Obviously, the method of the invention can realize the totally closed feeding and the non-oxidation operation of the materials, solves the problem of the influence of the toxic and allergenic solid materials on the safety and health of the personnel, improves the production safety and the product quality and obtains better technical effect.

Claims (1)

1. A closed solid material feeding method for a reaction kettle comprises the following steps:
a) and (3) during the bag unloading process: the big bag (2) filled with the raw materials is conveyed to a feed inlet of the buffer bin (3) by the electric hoist (1), and the fan (4) is started to exhaust air; connecting the big bag (2) with a feeding port of the buffer bin (3), unfastening the opening of the big bag and starting feeding; negative pressure exists in the buffer bin (3), and dust carried by air is discharged through the fan (4) through the dust removal filter (5);
b) in the nitrogen replacement process: after the feeding is finished, the upper gate valve (6) is opened, the material enters the storage bin (15) through gravity, then the upper gate valve (6) is closed, the nitrogen valve (8) and the exhaust valve (11) are opened, the storage bin (15) is subjected to nitrogen purging and replacement after the nitrogen is decompressed through the self-operated regulating valve (9), meanwhile, air is discharged through the filter (10) and the exhaust valve (11), and the nitrogen replacement is finished;
c) when the feeding process is carried out: after the replacement is finished, closing the exhaust valve (11), opening the lower gate valve (18), and feeding the materials into the reaction kettle (19) through gravity; in the charging process, along with the reduction of the pressure of the storage bin (15), the nitrogen supplements and balances the internal pressure through the self-operated regulating valve (9); according to the properties of different materials, a compressed air valve (12) is opened, and a storage bin (15) is vibrated by a vibration hammer (13) to dredge the accumulated materials; the reaction kettle realizes nitrogen sealing through a self-operated regulating valve (14) and a back pressure valve (17), and a lower gate valve (18) and a nitrogen valve (8) are closed after the feeding is finished;
d) and during the cleaning and drying process: after the feeding process is finished, a cleaning water valve (7) is opened, a storage bin (15) is cleaned through a spray header (16), and after the cleaning is finished, a lower gate valve (18) is opened to discharge the wastewater into the reaction kettle; opening a nitrogen valve (8) and an exhaust valve (11), purging the storage bin (15), and closing the nitrogen valve (8) and the exhaust valve (11) after purging;
all operations are preset in a control system, and all operation processes are started manually; a dust removal filter (5) and corresponding air exhaust pipelines and fans (4) are arranged on the buffer bin (3) to prevent dust from flying in the feeding process; before the solid materials are put into a reaction kettle (19), nitrogen gas replacement is carried out through a stock bin (15); a spray header (16) for online cleaning is arranged in the bin (15); the bottom of the buffer bin (3) is connected with the top of the bin (15), and the bottom of the bin (15) is connected with the upper part of the reaction kettle; after the nitrogen is decompressed by a self-operated regulating valve (9), the bin (15) is subjected to nitrogen purging replacement, wherein the blowing replacement time is 3-7 minutes; and opening a nitrogen valve (8) and an exhaust valve (11) to purge the storage bin (15), wherein the purging time is 8-12 minutes.
CN201710716998.9A 2017-08-21 2017-08-21 Closed solid material feeding method for reaction kettle Active CN107281979B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710716998.9A CN107281979B (en) 2017-08-21 2017-08-21 Closed solid material feeding method for reaction kettle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710716998.9A CN107281979B (en) 2017-08-21 2017-08-21 Closed solid material feeding method for reaction kettle

Publications (2)

Publication Number Publication Date
CN107281979A CN107281979A (en) 2017-10-24
CN107281979B true CN107281979B (en) 2020-01-21

Family

ID=60106540

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710716998.9A Active CN107281979B (en) 2017-08-21 2017-08-21 Closed solid material feeding method for reaction kettle

Country Status (1)

Country Link
CN (1) CN107281979B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109279363B (en) * 2018-08-20 2021-05-14 中石化上海工程有限公司 Device and method for directly feeding materials from class C area to class A area
CN109733889B (en) * 2019-01-16 2021-02-05 中石化上海工程有限公司 Wet and sticky material closed conveying system and method thereof
CN111569754A (en) * 2020-05-22 2020-08-25 中石化上海工程有限公司 Combustible powder feeding and mixing method and dust explosion-proof system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6311904B1 (en) * 1998-08-05 2001-11-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Apparatus and process for grinding closed containers that contain a powder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201618560U (en) * 2010-03-23 2010-11-03 四川路加四通科技发展有限公司 Automatic powder charging hopper
CN201842652U (en) * 2010-11-05 2011-05-25 乐山永祥硅业有限公司 Silica powder conveyor
CN205056031U (en) * 2015-10-23 2016-03-02 江西新信化学有限公司 Reation kettle with material device is thrown to airtight solid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6311904B1 (en) * 1998-08-05 2001-11-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Apparatus and process for grinding closed containers that contain a powder

Also Published As

Publication number Publication date
CN107281979A (en) 2017-10-24

Similar Documents

Publication Publication Date Title
CN107281979B (en) Closed solid material feeding method for reaction kettle
CN100515891C (en) Automatic dredging method and device for pneumatic convey system
CN102837863A (en) Catalyst unpacking and conveying and dust removing system and method for FCC (Fluid Catalytic Cracking) device
CN109623473A (en) A kind of waste scrap system
CN207237935U (en) The solid material enclosed charging device of reaction kettle
CN105817414A (en) Double-material barrel novel wall material treatment system with circulating cutting function
CN105438856A (en) Dry type adding system for water treatment powdered active carbon
CN201445865U (en) Single-machine dust remover with dust conveying pump
CN109733889B (en) Wet and sticky material closed conveying system and method thereof
CN2811232Y (en) Automatic block-dredging device for pneumatic conveying system
CN211487635U (en) Device for continuously conveying and batching powder
CN106829483A (en) A kind of flyash gas delivery system
CN207524617U (en) A kind of BOPP cigarette films co-extrusion suction device
CN108001744A (en) Dextran large biological molecule finished product collects crushing packing system and method automatically
CN210753712U (en) Equipment dust collector of high-efficient water-reducing agent production
CN205599327U (en) Carborundum powder production system
CN211365696U (en) Novel powder storage bin
CN211033767U (en) Improved discharging system for lime silo of power plant
CN203695096U (en) De-dusting and feeding device of rice processing system
CN209060751U (en) Silica dust deduster
CN205327868U (en) A jar pull throughs is retrieved to catalyst
CN109607202A (en) A kind of bulk material delivery pump and transmitting bulk material method
CN205917576U (en) A air explosion prevents stifled equipment for hopper of regenerating among recycled asphalt
CN201046363Y (en) Pressurization ceramic filter
CN208032106U (en) A kind of filter device of removal carbonyl nickel and CO impurity contained in composite gas

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant