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 PDF

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Publication number
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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CN102070193A (en
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齐牧
王彦福
姜志刚
臧颖波
张树峰
卿阳
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CITIC Titanium Industry Co Ltd
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Jinzhou Titanium Industry Co Ltd
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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

A kind of carrying method of chloride process titanium dioxide oxidized tail gas
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.
Embodiment 2
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.
Embodiment 3
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 chlorine press 3~4 Do not have 43 minutes 28 cubic metres
Tail gas is carried in the supercharging of chlorine press 4~5 Have 64 minutes 75 cubic metres
Instance 1 1 Do not have 2 minutes 1.3 cubic meter
Instance
2 1 Do not have 1 minute 40 seconds 2.0 cubic meter
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.
CN2010106049827A 2010-12-25 2010-12-25 Conveying method of oxidized tail gas of titanium white by adopting chlorination method Active CN102070193B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN113932614B (en) * 2021-10-31 2024-09-10 甘肃德通国钛金属有限公司 Air inlet system of chlorination furnace and control method

Citations (1)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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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

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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

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