CN102070193B - Conveying method of oxidized tail gas of titanium white by adopting chlorination method - Google Patents
Conveying method of oxidized tail gas of titanium white by adopting chlorination method Download PDFInfo
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- CN102070193B CN102070193B CN2010106049827A CN201010604982A CN102070193B CN 102070193 B CN102070193 B CN 102070193B CN 2010106049827 A CN2010106049827 A CN 2010106049827A CN 201010604982 A CN201010604982 A CN 201010604982A CN 102070193 B CN102070193 B CN 102070193B
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- tail gas
- pressure
- gas
- conveying
- valve group
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- 238000000034 method Methods 0.000 title claims abstract description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000005660 chlorination reaction Methods 0.000 title abstract description 11
- 235000010215 titanium dioxide Nutrition 0.000 title abstract 2
- 239000007787 solid Substances 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000460 chlorine Substances 0.000 abstract description 16
- 229910052801 chlorine Inorganic materials 0.000 abstract description 16
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a conveying method of oxidized tail gas of titanium white by adopting a chlorination method. In the conveying method, a connecting pipeline between a molten salt chlorination furnace and gas-solid separation equipment is provided with an automatic tail gas pressure control valve group; a pressure sensor is arranged on the connecting pipeline positioned behind the outlet ofthe automatic tail gas pressure control valve group and is used for detecting the pressure of the outlet of the gas-solid separation equipment; and a DCS (distributed control system) is adopted to regulate the output openness of the automatic tail gas pressure control valve group according to the pressure of the outlet of the gas-solid separation equipment detected by the pressure sensor so as tolead the tail gas pressure to be maintained between 200KPa-300KPa. In the method, the pressurization and conveying of tail gas of a chlorine compressor are omitted, and the DCS and the automatic pressure control valve group are utilized to regulate and balance the oxidizing tail gas and the pressure of a gas inlet of a chlorination furnace, and further realize smooth conveying of the oxidizing tail gas; the phenomenon of chlorine leakage caused by adopting the chlorine compressor is avoided, the pressure in the whole conveying process of tail gas is smooth, and simultaneously, the operating process of tail gas conveying is greatly simplified; and in the whole conveying process, the operation is simple, the labor is saved and the consumption of the original auxiliary materials is reduced.
Description
Technical field
The present invention relates to a kind of carrying method of chloride process titanium dioxide oxidized tail gas.
Background technology
Original chloride process titanium dioxide production technique adopts the chlorine press system, with sending into the fused salt chlorimation stove after the oxidized tail gas supercharging.By 3-4 name production operation personnel Attended Operation process. before carrying out the tail gas conveying, need carry out resistance to air loss to the chlorine press system and detect,, then begin to carry out tail gas and carry if do not find the tail gas leak source.Start tail gas chlorine press, import tail gas to the chlorine press, open the tail gas scum dredger, notice chlorination watch-keeping cubicle receives tail gas, oxidation watch-keeping cubicle and chlorination watch-keeping cubicle balance tail gas pressure.The tail gas course of conveying on average needs 45 minutes, does not get into the tail gas of chlorination furnace during this period with liquid caustic soda drip washing, consumes a large amount of liquid caustic soda.The aforesaid operations process is very loaded down with trivial details, and the running time is long, and the leacheate quantity of alkali consumption is big; The system pressure fluctuation is big, oxidation system is produced control extremely adverse influence; When tail gas passed through the supercharging of chlorine press, the leakage link was many, very easily caused compelled parking of production system and local tail gas pollution.
Summary of the invention
The present invention will solve the problems referred to above that occur in the course of conveying of existing chloride process titanium dioxide oxidized tail gas, and a kind of carrying method of chloride process titanium dioxide oxidized tail gas is provided, and adopts this method can realize the steady conveying of oxidized tail gas; Stop chlorine leakage phenomenon because of adopting the chlorine press to produce; Whole tail gas course of conveying pressure is steady, has greatly simplified the operating process that tail gas is carried simultaneously, and simple to operate; Save manual work, reduce raw and auxiliary material consumption.
Technical solution of the present invention is: tail gas pressure automatically controlled valve group is set on the connecting pipeline that is positioned at fused salt chlorimation stove and gas-solid separation equipment; After on connecting pipeline, being positioned at the outlet of tail gas pressure automatically controlled valve the top hole pressure that pressure transmitter is used for detecting gas-solid separation equipment is set; Adopt the DCS system tail gas pressure automatically controlled valve group output aperture to be regulated, oxidized tail gas pressure is remained between 200KPa～300KPa according to the gas-solid separation equipment top hole pressure that pressure transmitter detects.
This method has been cancelled the supercharging of chlorine press and has been carried tail gas, utilizes DCS system and pressure automatically controlled valve group, regulates and balance oxidized tail gas and chlorination furnace gas inlet pressure, realizes the steady conveying of oxidized tail gas.Stopped the chlorine leakage phenomenon because of adopting the chlorine press to produce, whole tail gas course of conveying pressure is steady, has greatly simplified the operating process that tail gas is carried simultaneously.Whole transportation process is simple to operate, saves manual work, reduces raw and auxiliary material consumption.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Among the figure: oxidized still 1, gas-solid separation equipment 2, tail gas pressure automatically controlled valve group 3, DCS computer control system 4, pressure transmitter 5, connecting pipeline 6, fused salt chlorimation stove 7.
Embodiment
Embodiment 1
As shown in the figure; In oxidized still 1, drop into 5200kg titanium tetrachloride, 1040kg oxygen; Through gas-solid separation equipment 2, the treated titanium dioxide product that obtains of solid, oxidized tail gas get into connecting pipeline 6 after the oxidizing reaction; Described connecting pipeline 6 is between fused salt chlorimation stove 7 and gas-solid separation equipment 2; Tail gas pressure automatically controlled valve group 3 is set on connecting pipeline 6, pressure transmitter 5 is set after on connecting pipeline 6, being positioned at tail gas pressure automatically controlled valve group 3 outlet, be used for detecting the top hole pressure of gas-solid separation equipment 2.Adopt DCS system 4 to link to each other with pressure transmitter 5; Gas-solid separation equipment 2 top hole pressures according to pressure transmitter 5 detects are regulated tail gas pressure automatically controlled valve group 3 output apertures; Oxidized tail gas pressure is remained between 200KPa～205KPa, and oxidized tail gas gets into fused salt chlorimation stove 7 backs and reacts with titanium slag, generates crude titanic chloride; Crude titanic chloride is through get into chlorination furnace after refining with oxygen reacts, the completion working cycle again.
In oxidized still 1, drop into 6510kg titanium tetrachloride, 1085kg oxygen; After the oxidizing reaction through gas-solid separation equipment 2; The treated titanium dioxide product that obtains of solid; Oxidized tail gas gets into connecting pipeline 6, and described connecting pipeline 6 is provided with tail gas pressure automatically controlled valve group 3 on connecting pipeline 6 between fused salt chlorimation stove 7 and gas-solid separation equipment 2; After on connecting pipeline 6, being positioned at 3 outlets of tail gas pressure automatically controlled valve group pressure transmitter 5 is set, is used for detecting the top hole pressure of gas-solid separation equipment 2.Adopt DCS system 4 to link to each other with pressure transmitter 5; Gas-solid separation equipment 2 top hole pressures according to pressure transmitter 5 detects are regulated tail gas pressure automatically controlled valve group 3 output apertures; Oxidized tail gas pressure is remained between 295KPa～300KPa, and oxidized tail gas gets into fused salt chlorimation stove 7 backs and reacts with titanium slag, generates crude titanic chloride; Crude titanic chloride is through get into chlorination furnace after refining with oxygen reacts, the completion working cycle again.
As shown in the figure; In oxidized still 1, drop into 5800kg titanium tetrachloride, 1055kg oxygen; Through gas-solid separation equipment 2, the treated titanium dioxide product that obtains of solid, oxidized tail gas get into connecting pipeline 6 after the oxidizing reaction; Described connecting pipeline 6 is between fused salt chlorimation stove 7 and gas-solid separation equipment 2; Tail gas pressure automatically controlled valve group 3 is set on connecting pipeline 6, pressure transmitter 5 is set after on connecting pipeline 6, being positioned at tail gas pressure automatically controlled valve group 3 outlet, be used for detecting the top hole pressure of gas-solid separation equipment 2.Adopt DCS system 4 to link to each other with pressure transmitter 5; Gas-solid separation equipment 2 top hole pressures according to pressure transmitter 5 detects are regulated tail gas pressure automatically controlled valve group 3 output apertures; Oxidized tail gas pressure is remained between 245KPa～250KPa, and oxidized tail gas gets into fused salt chlorimation stove 7 backs and reacts with titanium slag, generates crude titanic chloride; Crude titanic chloride is through get into chlorination furnace after refining with oxygen reacts, the completion working cycle again.
Examples comparative:
| ? | The production operation personnel | The chlorine press is revealed | The course of conveying time spent | Liquid caustic soda consumes |
| Tail gas is carried in the supercharging of |
3～4 | Do not have | 43 minutes | 28 cubic metres |
| Tail gas is carried in the supercharging of |
4～5 | Have | 64 minutes | 75 cubic metres |
| Instance 1 | 1 | Do not have | 2 minutes | 1.3 |
| Instance | ||||
| 2 | 1 | Do not have | 1 minute 40 seconds | 2.0 |
| Instance | ||||
| 3 | 1 | Do not have | 1 minute 10 seconds | 1.7 cubic meter |
Claims (1)
1. the carrying method of a chloride process titanium dioxide oxidized tail gas; It is characterized in that: tail gas pressure automatically controlled valve group is set on the connecting pipeline that is positioned at fused salt chlorimation stove and gas-solid separation equipment; After on connecting pipeline, being positioned at the outlet of tail gas pressure automatically controlled valve group the top hole pressure that pressure transmitter is used for detecting gas-solid separation equipment is set; Adopt the DCS system tail gas pressure automatically controlled valve group output aperture to be regulated, tail gas pressure is remained between 200kPa～300kPa according to the gas-solid separation equipment top hole pressure that pressure transmitter detects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049827A CN102070193B (en) | 2010-12-25 | 2010-12-25 | Conveying method of oxidized tail gas of titanium white by adopting chlorination method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049827A CN102070193B (en) | 2010-12-25 | 2010-12-25 | Conveying method of oxidized tail gas of titanium white by adopting chlorination method |
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| Publication Number | Publication Date |
|---|---|
| CN102070193A CN102070193A (en) | 2011-05-25 |
| CN102070193B true CN102070193B (en) | 2012-06-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106477625B (en) * | 2016-09-18 | 2018-08-10 | 云南冶金新立钛业有限公司 | The system for handling oxidized tail gas in titanium white production |
| CN112443754A (en) * | 2020-11-04 | 2021-03-05 | 山东鲁北企业集团总公司 | System and method for comprehensive utilization of chlorine gas produced by titanium dioxide produced by chlorination process |
| CN113932614A (en) * | 2021-10-31 | 2022-01-14 | 龙佰禄丰钛业有限公司 | Chlorination furnace gas inlet system and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210900A (en) * | 2006-12-30 | 2008-07-02 | 仇晓丰 | Free chloride on-line detection process during hydrogenchloride synthesis and the device therefor |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210900A (en) * | 2006-12-30 | 2008-07-02 | 仇晓丰 | Free chloride on-line detection process during hydrogenchloride synthesis and the device therefor |
Non-Patent Citations (2)
| Title |
|---|
| 汪珂等.钛和钛白生产中循环氯气的利用.《轻金属》.1995,(第11期),第39-43页. * |
| 陈钢.氯化法生产钛白的三废治理.《工业安全与环保》.2008,第34卷(第4期),第47-50页. * |
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| CN102070193A (en) | 2011-05-25 |
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Inventor after: Qi Mu Inventor after: Wang Yanfu Inventor after: Jiang Zhigang Inventor after: Cang Yingbo Inventor after: Zhang Shufeng Inventor after: Qing Yang Inventor before: Jiang Zhigang Inventor before: Cang Yingbo Inventor before: Zhang Shufeng Inventor before: Qing Yang |
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Free format text: CORRECT: INVENTOR; FROM: JIANG ZHIGANG ZANG YINGBO ZHANG SHUFENG QING YANG TO: QI MU WANG YANFU JIANG ZHIGANG ZANG YINGBO ZHANG SHUFENG QING YANG |
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Address after: 121000 Jin Ti Road 1, Taihe District, Jinzhou, Liaoning Patentee after: Jinzhou titanium Limited by Share Ltd Address before: 121000 alloy Li 59, Taihe District, Liaoning, Jinzhou Patentee before: Jinzhou Titanium Industry Co., Ltd. |
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Address after: 121000 Kam Ti Road, Taihe District, Jinzhou, Liaoning Province, No. 1 Patentee after: CITIC titanium Limited by Share Ltd Address before: 121000 Kam Ti Road, Taihe District, Jinzhou, Liaoning Province, No. 1 Patentee before: Jinzhou titanium Limited by Share Ltd |