CN114436324A - Device for producing small-particle-size titanium chloride white semi-finished product - Google Patents
Device for producing small-particle-size titanium chloride white semi-finished product Download PDFInfo
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- CN114436324A CN114436324A CN202210078691.1A CN202210078691A CN114436324A CN 114436324 A CN114436324 A CN 114436324A CN 202210078691 A CN202210078691 A CN 202210078691A CN 114436324 A CN114436324 A CN 114436324A
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- C01G23/00—Compounds of titanium
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Abstract
The invention belongs to the technical field of titanium white chloride semi-finished product production, and particularly relates to a device for producing a small-particle-size titanium white chloride semi-finished product. The device comprises an oxidation furnace, a filtering device, an air suction device and a chlorination furnace, wherein a chlorine gas outlet of the oxidation furnace is connected with an air inlet of the filtering device through a pipeline, an air outlet of the filtering device is connected with an air inlet of the air suction device through a pipeline, an air outlet of the air suction device is connected with an air inlet of the chlorination furnace through a pipeline, and valves are arranged on the pipeline arranged between the oxidation furnace and the filtering device and the pipeline arranged between the filtering device and the air suction device. The invention reduces the pressure of the returned chlorine gas through the air suction device to reduce the pressure of the oxidation reaction area of the oxidation furnace, further produces the titanium white chloride semi-finished product with small particle size, avoids the blocking phenomenon caused by excessive addition of potassium chloride, and the chlorine gas filtering device is mainly used for further removing solid titanium white particles and the like carried in the returned chlorine gas, thereby avoiding the solid particles from blocking the air suction device.
Description
Technical Field
The invention belongs to the technical field of titanium white chloride semi-finished product production, and particularly relates to a device for producing a small-particle-size titanium white chloride semi-finished product.
Background
The titanium dioxide is produced by the titanium white chloride process, which mainly comprises five working sections of chlorination, condensation, refining, oxidation and post-treatment, i.e. a titanium-rich material and petroleum coke react in the atmosphere of chlorine to generate crude titanium tetrachloride with various impurities and higher temperature, the crude titanium tetrachloride is condensed and cooled and then enters a refining and purifying process, the vanadium oxychloride in the crude titanium tetrachloride is reduced firstly, then the crude titanium tetrachloride enters a rectifying tower to be purified into refined titanium tetrachloride with low impurity content, the refined titanium tetrachloride enters an oxidation working section, the refined titanium tetrachloride and oxygen in the working section are preheated in multiple stages and mixed and react at higher temperature to generate a titanium white chloride semi-finished product and chlorine, the chlorine returns to a chlorination furnace (hereinafter referred to as the chlorine in the part as the return chlorine), and the titanium white chloride semi-finished product goes to the post-treatment working section to produce the titanium white chloride final product. The titanium white chloride final product is applied to the industries of coating, papermaking, plastics and the like, and different industries have different requirements on particle size. When the titanium dioxide final product for plastics is produced, the particle size of the product is required to be small, a small-particle-size semi-finished product is correspondingly required to be produced, and if the small-particle-size semi-finished product cannot be produced, the final product cannot be adjusted to an ideal particle size range through post-treatment even by sanding and other methods.
The influence factors of the semi-finished product particle size comprise material mixing temperature, reaction temperature, pressure, reactant concentration, the addition amount of a grain refiner, cooling speed after reaction and the like, the grain size of the titanium white chloride semi-finished product is reduced by increasing the addition amount of the grain refiner in the prior art, and the practical application shows that when the addition amount of potassium chloride is excessive, the blocking of an oxidation furnace caused by the high-temperature melting and condensation of potassium chloride and the bonding of semi-finished product particles is easily caused.
Disclosure of Invention
Aiming at the problem that an oxidation furnace is easy to block when a small-particle-size titanium chloride white semi-finished product is produced in the prior art, the invention provides a device for producing the small-particle-size titanium chloride white semi-finished product.
The technical scheme adopted by the invention is as follows:
the utility model provides a production small particle size titanium chloride white semi-manufactured goods's device, includes oxidation furnace, filter equipment, getter device and chlorination furnace, the chlorine gas outlet of oxidation furnace passes through the pipeline and links to each other with filter equipment's air inlet, filter equipment's air outlet passes through the pipeline and links to each other with getter device's air inlet, getter device's air outlet passes through the pipeline and links to each other with chlorination furnace's air inlet, all be provided with the valve on the pipeline that sets up between oxidation furnace and the filter equipment and the pipeline that sets up between filter equipment and the getter device.
After the technical scheme is adopted, the device reduces the pressure of an oxidation reaction area of the oxidation furnace by reducing the pressure of returned chlorine, further produces a small-particle-size titanium dioxide semi-finished product, avoids the blocking phenomenon caused by excessive addition of potassium chloride, and the chlorine filtering device is mainly used for further removing solid titanium dioxide particles and the like carried in the returned chlorine, so that the solid particles are prevented from blocking the air suction device, and the chlorine air suction is realized by reducing the pressure of the returned chlorine by using the air suction device, so that the pressure of the oxidation furnace is reduced.
Preferably, the filter device is composed of a first filter and a second filter connected in series.
After the technical scheme is adopted, the first filter and the second filter the titanium dioxide base material in the returned chlorine.
Preferably, the first filter is connected with a base material beating tank.
After the technical scheme is adopted, the collected titanium dioxide particles are pulped to prepare an aqueous solution, so that waste is avoided.
Preferably, the first filter is a cyclone filter or a bag filter, and the second filter is a concentrated sulfuric acid adsorption tower.
After the technical scheme is adopted, the bag filter has large handling capacity, small volume and large sewage holding flow; the cyclone dust collector has a simple structure, no accessories are arranged in the cyclone dust collector, the cost is low, and the dust collection efficiency can reach 80-90%.
Preferably, the air suction device is composed of a first air suction device and a second air suction device which are connected in parallel.
After the technical scheme is adopted, the air suction device is provided with two pipelines, one pipeline is used for one, when the air suction device is blocked by solid particles, the air suction device which needs to be replaced can be closed when the air suction device needs to be maintained, the air suction device is maintained, the air suction device of the other pipeline is opened, gas enters the pipeline to suck air, and the normal production of titanium chloride white is not influenced.
Preferably, automatic valves are arranged on parallel pipelines arranged between the filtering device and the first air suction device and between the filtering device and the second air suction device, and the automatic valves are connected with a DCS automatic control system.
After the technical scheme is adopted, when one set of air suction device needs to be maintained, the automatic valve arranged on the pipeline can be controlled to be closed through the DCS automatic control system, and meanwhile, the other set of air suction device on the other pipeline is opened through the automatic valve, so that the air suction device is convenient to maintain and replace, and meanwhile, the normal production process is not influenced.
Preferably, the air suction device is a chlorine compressor and a cooling tower matched with the chlorine compressor.
After the technical scheme is adopted, the pressure of the returned chlorine is reduced by the chlorine compressor, so that the pressure of the oxidation furnace is reduced, and the temperature of the chlorine is reduced by the cooling tower.
Preferably, the temperature of the returned chlorine after passing through the cooling tower is 40 to 60 ℃.
After the technical scheme is adopted, chlorine is cooled to low temperature and then collected.
Preferably, the valves arranged on the pipeline between the oxidation furnace and the filtering device are a manual valve and an automatic valve, and the automatic valve is connected with a DCS automatic control system.
After the technical scheme is adopted, in the operation process, the manual valve is normally opened, the manual valve is connected with the DCS for adjustment through the automatic valve, and the returned chlorine flows through the filtering device and the concentrated sulfuric acid adsorption tower through the automatic valve, so that the solid in the chlorine is separated and returned.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. can produce small-particle-size titanium chloride white semi-finished products.
2. Effectively avoiding the blocking phenomenon caused by excessive addition of potassium chloride.
3. The air suction device is provided with two pipelines, one pipeline is used for standby, when the air suction device is blocked by solid particles, the air suction device can be closed to be replaced when the air suction device needs to be maintained, the air suction device of the other pipeline is opened, gas enters the pipeline to suck the air, and the normal production of the titanium white chloride is not influenced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As shown in figure 1, the device for producing the titanium white chloride semi-finished product with the small particle size comprises an oxidation furnace, a filtering device, an air suction device and a chlorination furnace, wherein a chlorine gas outlet of the oxidation furnace is connected with an air inlet of the filtering device through a pipeline, an air outlet of the filtering device is connected with an air inlet of the air suction device through a pipeline, an air outlet of the air suction device is connected with an air inlet of the chlorination furnace through a pipeline, and valves are arranged on the pipeline arranged between the oxidation furnace and the filtering device and the pipeline arranged between the filtering device and the air suction device.
In this embodiment, the filtering device is composed of a first filter and a second filter connected in series.
In this embodiment, the first filter is connected to a base material beating tank.
In this embodiment, the first filter is a bag filter.
In this embodiment, the second filter is a concentrated sulfuric acid adsorption tower.
In this embodiment, the air suction device is composed of a first air suction device and a second air suction device which are connected in parallel.
In this embodiment, all be provided with the automatic valve on the parallelly connected pipeline that sets up between filter equipment and first getter device and the second getter device, the automatic valve all is connected with DCS automatic control system.
In this embodiment, the first suction device is composed of a first chlorine compressor and a first cooling tower, and the second suction device is composed of a second chlorine compressor and a second cooling tower.
In this embodiment, the temperature of the chlorine gas after being cooled by the cooling tower is 60 ℃.
In this embodiment, the valves disposed on the pipeline between the oxidation furnace and the filtering device are a manual valve and an automatic valve, and the automatic valve is connected to a DCS automatic control system.
In this embodiment, the DCS automatic control system used is the prior art, and is not the invention of the present invention, and therefore, the structure and the operation principle thereof are not described in detail.
The using method of the invention is as follows: the chlorine gas returning pipeline of the oxidation furnace is connected with the gas inlet pipeline, the chlorine gas compressor is started, the hand valve is normally opened in the operation process, the automatic valve is started through the DCS control system, and the chlorine gas returns to flow through the bag filter and the concentrated sulfuric acid adsorption tower, so that solid impurities in the chlorine gas are separated and returned. The chlorine returning part is divided into two pipelines after being filtered, one is used for standby, when the compressor is blocked by solid particles and is replaced, the automatic valve of the pipeline where the compressor needs to be replaced can be closed, the chlorine gas suction device is disassembled for maintenance, the automatic valve of the other pipeline is opened, the gas enters the pipeline for suction, and the normal production of the titanium white chloride is not influenced.
The embodiment shows that the small-particle-size titanium chloride white semi-finished product can be produced by matching the air suction device and the filtering device, and the blocking phenomenon caused by excessive addition of potassium chloride is effectively avoided.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (9)
1. The utility model provides a device of production small particle size titanium chloride white semi-manufactured goods which characterized in that: the device comprises an oxidation furnace, a filtering device, an air suction device and a chlorination furnace, wherein a chlorine gas outlet of the oxidation furnace is connected with a gas inlet of the filtering device through a pipeline, a gas outlet of the filtering device is connected with a gas inlet of the air suction device through a pipeline, a gas outlet of the air suction device is connected with a gas inlet of the chlorination furnace through a pipeline, and valves are arranged on the pipeline arranged between the oxidation furnace and the filtering device and the pipeline arranged between the filtering device and the air suction device.
2. The apparatus for producing titanium white chloride semi-finished products with small particle size according to claim 1, wherein: the filtering device is composed of a first filter and a second filter which are connected in series.
3. The apparatus for producing titanium white chloride semi-finished product with small particle size according to claim 2, wherein: the first filter is connected with a base material beating tank.
4. The apparatus for producing titanium white chloride semi-finished product with small particle size according to claim 2, wherein: the first filter is a cyclone filter or a bag filter, and the second filter is a concentrated sulfuric acid adsorption tower.
5. The apparatus for producing titanium white chloride semi-finished products with small particle size according to claim 1, wherein: the air suction device consists of a first air suction device and a second air suction device which are connected in parallel.
6. The apparatus for producing titanium white chloride semi-finished product with small particle size according to claim 5, wherein: automatic valves are arranged on parallel pipelines arranged between the filtering device and the first air suction device and between the filtering device and the second air suction device, and the automatic valves are connected with a DCS automatic control system.
7. The apparatus for producing titanium white chloride semi-finished products with small particle size according to claim 1, wherein: the air suction device consists of a chlorine compressor and a cooling tower matched with the chlorine compressor.
8. The apparatus for producing titanium tetrachloride with small particle size according to claim 7, wherein: the temperature of the chlorine after passing through the cooling tower is 40-60 ℃.
9. The apparatus for producing titanium tetrachloride with small particle size according to claim 1, wherein: the valves arranged on the pipeline between the oxidation furnace and the filtering device are a manual valve and an automatic valve, and the automatic valve is connected with a DCS automatic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078691.1A CN114436324A (en) | 2022-01-24 | 2022-01-24 | Device for producing small-particle-size titanium chloride white semi-finished product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078691.1A CN114436324A (en) | 2022-01-24 | 2022-01-24 | Device for producing small-particle-size titanium chloride white semi-finished product |
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| CN114436324A true CN114436324A (en) | 2022-05-06 |
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| CN202210078691.1A Pending CN114436324A (en) | 2022-01-24 | 2022-01-24 | Device for producing small-particle-size titanium chloride white semi-finished product |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE726185A (en) * | 1967-12-29 | 1969-05-29 | ||
| CN101122031A (en) * | 2006-08-10 | 2008-02-13 | 贵阳铝镁设计研究院 | Electrolytic method magnesium smelting chlorine gas transmission method and device thereof |
| CN101462766A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Technique for cooling titanic chloride burner gas |
| CN203833638U (en) * | 2013-12-09 | 2014-09-17 | 云南新立有色金属有限公司 | System for preparing titanium dioxide gas powder |
| CN106006728A (en) * | 2016-05-26 | 2016-10-12 | 宜宾天原集团股份有限公司 | Preparation method of titanium dioxide according to chlorination method |
| CN205773420U (en) * | 2016-05-26 | 2016-12-07 | 宜宾天原集团股份有限公司 | The oxidized tail gas pressure control device of chlorination legal system titanium dioxide system |
| CN216837163U (en) * | 2022-01-24 | 2022-06-28 | 龙佰禄丰钛业有限公司 | Device for producing small-particle-size titanium chloride white semi-finished product |
-
2022
- 2022-01-24 CN CN202210078691.1A patent/CN114436324A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE726185A (en) * | 1967-12-29 | 1969-05-29 | ||
| CN101122031A (en) * | 2006-08-10 | 2008-02-13 | 贵阳铝镁设计研究院 | Electrolytic method magnesium smelting chlorine gas transmission method and device thereof |
| CN101462766A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Technique for cooling titanic chloride burner gas |
| CN203833638U (en) * | 2013-12-09 | 2014-09-17 | 云南新立有色金属有限公司 | System for preparing titanium dioxide gas powder |
| CN106006728A (en) * | 2016-05-26 | 2016-10-12 | 宜宾天原集团股份有限公司 | Preparation method of titanium dioxide according to chlorination method |
| CN205773420U (en) * | 2016-05-26 | 2016-12-07 | 宜宾天原集团股份有限公司 | The oxidized tail gas pressure control device of chlorination legal system titanium dioxide system |
| CN216837163U (en) * | 2022-01-24 | 2022-06-28 | 龙佰禄丰钛业有限公司 | Device for producing small-particle-size titanium chloride white semi-finished product |
Non-Patent Citations (2)
| Title |
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| 李云: "低浓度氯气富集研究现状与进展", 《现代化工》, vol. 29, no. 9 * |
| 邓科: "氯化法钛白粉的生产工艺与技术经济分析", 《中国氯碱》, no. 1 * |
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