CN106643281B - A method of oxidation furnace outlet conduit is prepared except scar agent using titanium dioxide compressing dry granulation - Google Patents
A method of oxidation furnace outlet conduit is prepared except scar agent using titanium dioxide compressing dry granulation Download PDFInfo
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- CN106643281B CN106643281B CN201610933108.5A CN201610933108A CN106643281B CN 106643281 B CN106643281 B CN 106643281B CN 201610933108 A CN201610933108 A CN 201610933108A CN 106643281 B CN106643281 B CN 106643281B
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- titanium dioxide
- outlet conduit
- oxidation furnace
- furnace outlet
- dry granulation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
-
- 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
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
Abstract
A method of oxidation furnace outlet conduit is prepared except scar agent using titanium dioxide compressing dry granulation, rutile type titanium white is uniformly mixed with low-substituted hydroxypropyl cellulose using batch mixer, obtain mixed material, mixed material is transported to high speed rotary tablet press loading hopper, start high speed rotary tablet press and carry out compressing dry granulation, obtains oxidation furnace outlet conduit except scar agent.Advantage is: production cost is low, easy to operate, it should scab material except scar agent can remove oxidation furnace outlet conduit wall, and improve cooling duct heat exchange efficiency, guarantee production process product normally cools, to guarantee that material enters the inlet temperature of bag hose, meet fused salt chlorimation method process control needs.
Description
Technical field
The present invention relates to Titanium Dioxide Produced by Chloride Procedure production technical fields, in particular to a kind of to be prepared using titanium dioxide compressing dry granulation
The method that oxidation furnace outlet conduit removes scar agent should can substitute rock salt except scar agent and cool down except scar to oxidation furnace outlet conduit.
Background technique
Oxidation operation of the fused salt chlorimation method production process of titanium pigment in oxidation furnace, the formation of oxidation furnace outlet conduit scab,
Original design cool down except scar using rock salt.Oxidation outlet of still cooling duct inner wall is washed away using rock salt, is adhered to cold
But after the material of pipe inner wall is removed by rock salt, the heat transfer effect of cooling duct is improved, guarantees that bag hose outlet temperature meets
Process control needs.But rock salt and material be when postprocessing working procedures washing separates, rock salt generate high chlorine root waste water can not environmental protection reach
Mark discharge, high chlorine root cost for wastewater treatment increase, and aggravate environmental protection production pressure.Also, in titanium white flour flow design dispersion step, by
In the effect of salt effect, process product dispersion effect also will affect, influence the coating effect of titanium dioxide semi-finished product.
Summary of the invention
The invention solves and technical problem be to provide a kind of production cost it is low, it is maneuverable utilize titanium dioxide dry method
Tabletting prepares the method that oxidation furnace outlet conduit removes scar agent, and this method utilizes rotary pelleting machine by titanium dioxide and low substituted hydroxy-propyl
Compressing dry granulation is carried out after cellulose mixing, the particle for meeting technique requirement is made, should can substitute rock salt to oxidation furnace except scar agent
Outlet conduit cool down except scar.
The technical scheme is that
A method of oxidation furnace outlet conduit being prepared except scar agent using titanium dioxide compressing dry granulation, is comprised the concrete steps that:
Rutile type titanium white is uniformly mixed with low-substituted hydroxypropyl cellulose using batch mixer, obtains mixed material,
The mass ratio of the low-substituted hydroxypropyl cellulose and rutile type titanium white is 1:10~1:100, and mixed material is transported to height
Fast rotary pelleting machine loading hopper, starting high speed rotary tablet press carries out compressing dry granulation, first under 10 KN~20KN precompression
Pre- tabletting is carried out, then carries out tabletting under 20 KN~50KN principal pressure again, obtaining granularity is 6mm~15mm, with a thickness of 10mm
Oxidation furnace outlet conduit remove scar agent.
Further, the oxidation furnace outlet conduit removes scar agent in use, using the nitrogen of 0.4Mpa by titanium white in storage tank
Powder tabletting is transported in cooling duct by rotating blanking valve, and titanium dioxide tabletting is with mixed airflow flow forward, titanium dioxide pressure
Piece constantly washes away the material that scabs of cooling duct wall adherency, and the material that scabs is disposed of, and improves cooling duct heat exchange efficiency.
The beneficial effects of the present invention are:
(1 in fused salt chlorimation method production process of titanium pigment, and the oxidation furnace outlet conduit of titanium dioxide compressing dry granulation preparation removes scar
Agent substitutes rock salt raw material, reduces production cost；It should scab except scar agent can remove oxidation furnace outlet conduit (cooling duct) wall
Material improves cooling duct heat exchange efficiency, guarantees that production process product normally cools, to guarantee that material enters bag hose
Inlet temperature meets fused salt chlorimation method process control needs.
(2) after tableting granulation completion removing pipeline wall scabs, as material continues postprocessing working procedures processing together,
It is finally completed with product form, the low-substituted hydroxypropyl cellulose of compressing dry granulation pelletization addition does not influence product quality and refers to
Mark, low-substituted hydroxypropyl cellulose can effectively improve the intensity of tabletting, while play tabletting granulation calving disaggregation.
(3) it solves and generates high chlorine root wastewater problem in fused salt chlorimation method production process of titanium pigment, ensure postprocessing working procedures
The waste water of generation is free of high chlorine root, realizes the discharge of fused salt chlorimation method titanium white production waste water environment protection standard.
(4) fused salt chlorimation method titanium white flour flow design production process does not have the influence of salt effect, improves product and was dispersing
Dispersion effect in journey, improves the effect of inorganic coating, and potentiality improves titanium dioxide product quality.
Specific embodiment
Embodiment 1
100kg rutile type titanium white is uniformly mixed with 10kg low-substituted hydroxypropyl cellulose using batch mixer, is obtained
Mixed material, mixed material are transported to high speed rotary tablet press loading hopper, and starting high speed rotary tablet press carries out compressing dry granulation, first
It first carries out pre- tabletting under 10 KN~20KN precompression, is pressed under 20 KN~50KN principal pressure again after compression molding
Piece obtains granularity and removes scar agent for 15mm, with a thickness of the oxidation furnace outlet conduit of 10mm, and product rate in blocks is 100%.
Titanium dioxide tabletting in storage tank is transported in cooling duct by rotating blanking valve using the nitrogen of 0.4Mpa,
With mixed airflow flow forward, the adherency of cooling duct wall is constantly washed away in titanium dioxide tabletting for the titanium dioxide tabletting of 100kg/h
Scab material, and after the material that scabs is disposed of, cooling duct heat exchange efficiency is improved, and material can normally cool, in bag
Temperature of charge is by normal control at 150 DEG C~200 DEG C at filter inlet.
Embodiment 2
100kg rutile type titanium white is uniformly mixed with 1kg low-substituted hydroxypropyl cellulose using batch mixer, is mixed
Material is closed, mixed material is transported to high speed rotary tablet press loading hopper, and starting high speed rotary tablet press carries out compressing dry granulation, high speed
The precompression of rotary pelleting machine is 10 KN, and principal pressure is 20 KN, and obtaining granularity is 6mm, the oxidation outlet of still with a thickness of 10mm
Pipeline removes scar agent.
Titanium dioxide tabletting in storage tank is transported in cooling duct by rotating blanking valve using the nitrogen of 0.4Mpa,
With mixed airflow flow forward, the adherency of cooling duct wall is constantly washed away in titanium dioxide tabletting for the titanium dioxide tabletting of 100kg/h
Scab material, and after the material that scabs is disposed of, cooling duct heat exchange efficiency is improved, and material can normally cool, in bag
For temperature of charge by normal control at 150 DEG C~200 DEG C, product rate in blocks is 100% at filter inlet.
Embodiment 3
100kg rutile type titanium white is uniformly mixed with 5kg low-substituted hydroxypropyl cellulose using batch mixer, is mixed
Material is closed, mixed material is transported to high speed rotary tablet press loading hopper, and starting high speed rotary tablet press carries out compressing dry granulation, high speed
The precompression of rotary pelleting machine is 15KN, principal pressure 35KN, and obtaining granularity is 8mm, the oxidation furnace outlet with a thickness of 10mm
Remove scar agent in road, and product rate in blocks is 100%.
Titanium dioxide tabletting in storage tank is transported in cooling duct by rotating blanking valve using the nitrogen of 0.4Mpa,
With mixed airflow flow forward, the adherency of cooling duct wall is constantly washed away in titanium dioxide tabletting for the titanium dioxide tabletting of 100kg/h
Scab material, and after the material that scabs is disposed of, cooling duct heat exchange efficiency is improved, and material can normally cool, in bag
Temperature of charge is by normal control at 150 DEG C~200 DEG C at filter inlet.
The design of 1 oxidation operation original of comparative example is using rock salt except scar cools down
Rock salt in storage tank is transported in cooling duct by rotating blanking valve using the nitrogen of 0.4Mpa, 80kg/h rock salt
With mixed airflow flow forward, rock salt constantly washes away the material that scabs of cooling duct wall adherency, and the material that scabs is disposed of
After, cooling duct heat exchange efficiency improves, and material can normally cool, be existed in bag hose inlet temperature by normal control
150 DEG C~200 DEG C.
2 oxidation operation of comparative example is using the granulation of titanium dioxide compressing dry granulation except scar cooling, tabletting 2~5mm of granularity, thickness 5mm
Titanium dioxide tabletting in storage tank is transported in cooling duct by rotating blanking valve using the nitrogen of 0.4Mpa, the titanium of 150kg/h
White powder tabletting is with mixed airflow flow forward, and the material that scabs of cooling duct wall adherency is constantly washed away in titanium dioxide tabletting, only
Some material that scabs of energy is disposed of, and the raising of cooling duct heat exchange efficiency is unobvious, and material cannot normally be cooled,
In bag hose inlet, temperature of charge reaches 220 DEG C or more, is not able to satisfy normal process control needs.
The above is only specific embodiments of the present invention, are not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of prepare the method that oxidation furnace outlet conduit removes scar agent using titanium dioxide compressing dry granulation, it is characterized in that:
It comprises the concrete steps that:
Rutile type titanium white is uniformly mixed with low-substituted hydroxypropyl cellulose using batch mixer, obtains mixed material, it is described
The mass ratio of low-substituted hydroxypropyl cellulose and rutile type titanium white is 1:10~1:100, and mixed material is transported to high speed and revolves
Turn tablet press machine loading hopper, starting high speed rotary tablet press carries out compressing dry granulation, carries out under 10 kN~20kN precompression first
Then pre- tabletting carries out tabletting under 20 kN~50kN principal pressure, obtaining granularity is 6mm~15mm, the oxygen with a thickness of 10mm
Change outlet of still pipeline and removes scar agent.
2. according to claim 1 prepare the method that oxidation furnace outlet conduit removes scar agent using titanium dioxide compressing dry granulation,
Be characterized in: the oxidation furnace outlet conduit is except scar agent is in use, the nitrogen using 0.4MPa passes through titanium dioxide tabletting in storage tank
Rotating blanking valve is transported in cooling duct, and titanium dioxide tabletting is constantly washed away with mixed airflow flow forward, titanium dioxide tabletting
The material that scabs of cooling duct wall adherency, the material that scabs are disposed of, and improve cooling duct heat exchange efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933108.5A CN106643281B (en) | 2016-10-25 | 2016-10-25 | A method of oxidation furnace outlet conduit is prepared except scar agent using titanium dioxide compressing dry granulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933108.5A CN106643281B (en) | 2016-10-25 | 2016-10-25 | A method of oxidation furnace outlet conduit is prepared except scar agent using titanium dioxide compressing dry granulation |
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| CN106643281A CN106643281A (en) | 2017-05-10 |
| CN106643281B true CN106643281B (en) | 2019-03-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107697949B (en) * | 2017-11-13 | 2023-09-08 | 龙佰集团股份有限公司 | Titanium dioxide production process for chloridizing scar-removing sand by sulfuric acid method kiln dropping product |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391078A (en) * | 2001-06-11 | 2003-01-15 | 中国科学院化工冶金研究所 | Oxidizing furnace able to remove scar by spraying titanium oxide particles and chlorination process and its method for removing scar |
| CN103723767A (en) * | 2013-12-09 | 2014-04-16 | 云南新立有色金属有限公司 | Continuous feeding device for scab removing sand and titanium dioxide production device adopting chlorination process |
| CN104619648A (en) * | 2012-04-27 | 2015-05-13 | 克里斯特尔美国有限公司 | Tio2 based scrubbing granules, and methods of making and using such tio2 based scrubbing granules |
| CN204958427U (en) * | 2015-09-22 | 2016-01-13 | 漯河兴茂钛业股份有限公司 | Titanium tetrachloride oxidation reactor spouts salt and removes scar device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4430287B2 (en) * | 2002-08-12 | 2010-03-10 | 東邦チタニウム株式会社 | Titanium tetrachloride production equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391078A (en) * | 2001-06-11 | 2003-01-15 | 中国科学院化工冶金研究所 | Oxidizing furnace able to remove scar by spraying titanium oxide particles and chlorination process and its method for removing scar |
| CN104619648A (en) * | 2012-04-27 | 2015-05-13 | 克里斯特尔美国有限公司 | Tio2 based scrubbing granules, and methods of making and using such tio2 based scrubbing granules |
| CN103723767A (en) * | 2013-12-09 | 2014-04-16 | 云南新立有色金属有限公司 | Continuous feeding device for scab removing sand and titanium dioxide production device adopting chlorination process |
| CN204958427U (en) * | 2015-09-22 | 2016-01-13 | 漯河兴茂钛业股份有限公司 | Titanium tetrachloride oxidation reactor spouts salt and removes scar device |
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| CN106643281A (en) | 2017-05-10 |
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Address after: 121000 Kam Ti Road, Taihe District, Jinzhou, Liaoning Province, No. 1 Applicant after: CITIC titanium Limited by Share Ltd Address before: No. 59 in the alloy of Jinzhou City, Liaoning Province Applicant before: Jinzhou Titanium Industry Co., Ltd. |
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