CN211770336U - Energy recycling type titanium tetrachloride production system - Google Patents
Energy recycling type titanium tetrachloride production system Download PDFInfo
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- CN211770336U CN211770336U CN201922206249.9U CN201922206249U CN211770336U CN 211770336 U CN211770336 U CN 211770336U CN 201922206249 U CN201922206249 U CN 201922206249U CN 211770336 U CN211770336 U CN 211770336U
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Abstract
The utility model relates to an energy cyclic utilization formula titanium tetrachloride production system, including the liquid chlorine jar, one side of liquid chlorine jar is equipped with CaCl2Solution storage tank, CaCl2The lower end of the solution storage tank is passed through CaCl2The solution control valve is provided with a first heat exchanger, a liquid chlorine tank and CaCl2The solution storage tank is respectively connected with the side part and the top part of the first heat exchanger, the bottom part of the first heat exchanger is connected with the shell inlet of the second heat exchanger, the other side part of the first heat exchanger is connected with the bottom part of the chlorination furnace, the top part of the chlorination furnace is connected with the gas pipeline inlet of the second heat exchanger, the bottom end of the second heat exchanger is provided with CaCl2The outlets of the gas pipelines of the second heat exchanger of the solution storage tank are connected with a titanium tetrachloride collectorThe interior of the tank and the titanium tetrachloride collecting tank is provided with a spray pipe. Through two sets of heat exchangers, CaCl2CaCl for heat absorption and cooling of gas generated by solution heat release and liquid chlorine vaporization2The heat transfer between the solution and the titanium tetrachloride gas adopts the heat energy in the production flow, and solves the problem of large consumption of electric energy and fuel in the production process of the titanium tetrachloride.
Description
Technical Field
The utility model belongs to the technical field of titanium tetrachloride production, concretely relates to energy cyclic utilization formula titanium tetrachloride production system.
Background
The production of titanium tetrachloride belongs to typical chlorination metallurgy, and the demand of titanium tetrachloride as a main production raw material of titanium sponge and titanium dioxide is increasing. The traditional titanium tetrachloride production flow is as follows: the method comprises the steps of putting titanium-rich materials (the titanium-rich materials mainly comprise natural rutile, high-titanium slag, artificial rutile and ilmenite) serving as production raw materials into a chlorination furnace, performing chlorination operation to obtain mixed chlorination flue gas containing titanium tetrachloride, performing a series of condensation separation operations of dust collection, leaching, settling and filtering on the mixed chlorination flue gas to obtain crude titanium tetrachloride, and finally performing refining operation on the obtained crude titanium tetrachloride to obtain refined titanium tetrachloride, wherein the impurity content in the crude titanium tetrachloride directly influences the purity of the refined titanium tetrachloride and finally influences the quality of produced titanium sponge and titanium dioxide.
In actual production, the titanium tetrachloride feed liquid obtained after leaching has high solid impurity content, the finally obtained crude titanium tetrachloride has high impurity particle content, the subsequent preparation of fine titanium tetrachloride is not facilitated, the titanium tetrachloride is easy to leak, the environmental pollution is caused, a large amount of heat energy generated in the production process cannot be effectively utilized, the heat energy cannot be well combined with the original titanium tetrachloride production flow, and the resource waste and the large amount of heat energy loss are caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an energy cyclic utilization formula titanium tetrachloride production system solves the problem that a large amount of heat energy can not be effectively utilized in current titanium tetrachloride production process.
In order to achieve the above object, the utility model adopts the following technical scheme: the energy recycling type titanium tetrachloride production system comprises a liquid chlorine tank, wherein a liquid chlorine control valve is arranged at the lower end of the liquid chlorine tank, and CaCl is arranged on one side of the liquid chlorine tank2Solution storage tank, said CaCl2The lower end of the solution storage tank is passed through CaCl2The solution control valve is provided with a first heat exchanger, a liquid chlorine tank and CaCl2The solution storage tank is respectively connected with the side part and the top part of the first heat exchanger, the bottom part of the first heat exchanger is connected with the shell inlet of the second heat exchanger, the other side part of the first heat exchanger is connected with the bottom part of the chlorination furnace, the top part of the chlorination furnace is connected with the gas pipeline inlet of the second heat exchanger, and the bottom end of the second heat exchanger is provided with CaCl2And a gas pipeline outlet of the second heat exchanger is connected with a titanium tetrachloride collecting tank, and a spray pipe is arranged in the titanium tetrachloride collecting tank.
Preferably, the first heat exchanger is liquid chlorine and CaCl2Heat exchange between the solutions, the second heat exchanger being cooled CaCl2The solution and the titanium tetrachloride gas exchange heat.
Preferably, the first heat exchanger and the second heat exchanger are both tube heat exchangers.
Preferably, the spray pipe is arranged at the inner top of the titanium tetrachloride collecting tank, a plurality of spray heads are arranged on the pipeline of the spray pipe, and a plurality of liquid outlet holes are formed in the spray heads.
Preferably, one end of the spray pipe is provided with an inlet, and the inlet is arranged on the side wall of the titanium tetrachloride collecting tank.
Preferably, a plurality of groups of spray pipes are arranged at the top of the titanium tetrachloride collecting tank.
Preferably, the top, the bottom and two side parts of the first heat exchanger are provided with medium inlets and outlets, and the top of the first heat exchanger is provided with CaCl2A solution inlet with a cooled CaCl at the bottom2The solution outlet and the side part are provided with a tube pass inlet which is a liquid chlorine inlet, and the other side part is provided with a tube pass outlet which is a chlorine outlet.
Preferably, of said second heat exchangerBoth sides and the bottom are also provided with medium inlets and outlets, and the tube side ports on the two sides of the second heat exchanger are respectively provided with cooled CaCl2A solution inlet, a titanium tetrachloride gas inlet and a titanium tetrachloride gas outlet, wherein CaCl is arranged at the bottom of the second heat exchanger2And (6) solution outlet.
The utility model has the advantages that: the utility model has reasonable structural design and simple and convenient installation and operation, fully utilizes the heat of materials and realizes the recycling of energy; the heat carried by the calcium chloride solution is transferred to the liquid chlorine through the first tube heat exchanger, so that the liquid chlorine is vaporized into gas, the reaction contact area of chlorine gas and other substances in a chlorination furnace is increased, the second tube heat exchanger is used for transferring heat energy between the condensed calcium chloride solution and titanium tetrachloride gas, so that the temperature of the titanium tetrachloride gas is reduced by one part, the utilization rate of the cold energy of the calcium chloride solution is improved, the large-proportion loss during production is avoided, more refined titanium tetrachloride is obtained through two groups of heat exchangers, and the complexity of the operation process is avoided; the spraying device effectively controls the volume of the titanium tetrachloride liquid, and avoids the waste of the titanium tetrachloride liquid; the whole device realizes the production tightness, can effectively prevent toxic and harmful gases from directly entering the atmosphere to pollute the environment, and provides protection for the working environment, equipment operation and personnel health.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the flow of media in the first heat exchanger of the present invention;
fig. 3 is a schematic diagram of the medium flow in the second heat exchanger of the present invention.
Reference numbers in the figures: 1 is a liquid chlorine tank, 2 is a liquid chlorine control valve, and 3 is CaCl2Solution storage tank, 4 is CaCl2A solution control valve, 5 is a first heat exchanger, 6 is a chlorination furnace, 7 is a second heat exchanger, 8 is CaCl2A second solution storage tank, 9 is a titanium tetrachloride collecting tank, 10 is a spray pipe, 11 is an inlet, 12 is a spray head, and 5-1 is CaCl2A solution inlet, 5-2 as a liquid chlorine inlet, 5-3 as a chlorine outlet, and 5-4 as cooled CaCl2Solution outlet, 7-1 is cooled CaCl2A solution inlet, 7-2 is a titanium tetrachloride gas inlet, 7-3 is a titanium tetrachloride gas outlet, 7-4 is CaCl2And (6) solution outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
as shown in figures 1-3, the energy recycling titanium tetrachloride production system comprises a liquid chlorine tank 1, a liquid chlorine control valve 2 is arranged at the lower end of the liquid chlorine tank 1 and used for controlling the flow of liquid chlorine, and CaCl is arranged on one side of the liquid chlorine tank 12Solution storage tank 3, CaCl2The lower end of the solution storage tank 3 is passed through CaCl2The solution control valve 4 is provided with a first heat exchanger 5 of CaCl2The solution control valve 4 is used for regulating CaCl2The flow of the solution, the top, the bottom and two side parts of the first heat exchanger 5 are all provided with a medium inlet and outlet, and the top inlet of the first heat exchanger 5 is CaCl2A solution inlet 5-1, a bottom outlet of the first heat exchanger 5 is cooled CaCl2A solution outlet 5-4, one side part is provided with a liquid chlorine inlet 5-2, the other side part is a chlorine outlet 5-3, vaporized chlorine and part of liquid chlorine are discharged from the chlorine outlet 5-3, the liquid chlorine tank 1 is connected with the liquid chlorine inlet 5-2 through a pipeline, CaCl is added2CaCl of solution storage tank 3 and first heat exchanger 52The solution inlet 5-1 is connected, and the chlorine gas outlet 5-3 of the first heat exchanger 5 is connected with the bottom of the chlorination furnace 6.
Both sides and the bottom of the second heat exchanger 7 are also provided with medium inlets and outlets, and two sides of the second heat exchanger 7 are respectively provided with cooled CaCl2A solution inlet 7-1, a titanium tetrachloride gas inlet 7-2, a titanium tetrachloride gas outlet 7-3, and CaCl at the bottom2Solution outlet 7-4, cooled CaCl of first heat exchanger 52Cooled CaCl of solution outlet 5-4 and second heat exchanger 72The solution inlet 7-1 is connected, the top of the chlorination furnace 6 is connected with the titanium tetrachloride gas inlet 7-2 of the second heat exchanger 7, the CaCl is arranged at the bottom end of the second heat exchanger 72Solution storage tank II 8, CaCl2Solution outlet 7-4 and CaCl2The second solution storage tank 8 is connected, the titanium tetrachloride gas outlet 7-3 of the second heat exchanger 7 is connected with a titanium tetrachloride collecting tank 9, and the first heat exchanger 5 is liquid chlorineCaCl2Heat exchange between the solutions, the second heat exchanger 7 being cooled CaCl2The solution and the titanium tetrachloride gas exchange heat. First heat exchanger 5 and second heat exchanger 7 are snakelike shell and tube heat exchanger, and as other embodiments of the utility model, first heat exchanger 5 and second heat exchanger 7 also can be the heat exchanger of other shapes, and for example the inner tube is parallel arrangement from top to bottom, and the both ends of each pipeline are passed through the standpipe and are connected, and each pipeline and standpipe homoenergetic communicate, also can be for double-pipe heat exchanger or make specific heat exchanger according to particular case.
In this embodiment, a spray pipe 10 is arranged inside a titanium tetrachloride collection tank 9, an inlet 11 is arranged at one end of the spray pipe 10, the inlet 11 is arranged on the side wall of the titanium tetrachloride collection tank 9 and connected with a container filled with titanium tetrachloride liquid outside, the titanium tetrachloride liquid can conveniently enter the titanium tetrachloride collection tank 9 to spray titanium tetrachloride gas, the spray pipes 10 are arranged in an annular or rectangular array shape, a plurality of spray pipes are arranged in parallel in the front and at the back, the spray pipes 10 are arranged on the upper part of the titanium tetrachloride collection tank 9, a plurality of spray heads 12 are arranged on the pipelines of the spray pipes 10, and a plurality of liquid outlet holes are arranged.
The utility model discloses a use method: opening the liquid chlorine control valve 2 and CaCl2A solution control valve 4, wherein liquid chlorine enters a pipeline inside the first heat exchanger 5 through a liquid chlorine inlet 5-2, and CaCl2The solution is passed through CaCl2The solution inlet 5-1 enters the shell of the first heat exchanger 5, liquid chlorine is vaporized into chlorine, part of the liquid chlorine is not vaporized, the chlorine enters the chlorination furnace 6 through the bottom of the chlorination furnace 6 to perform chlorination reaction with high titanium slag and petroleum coke, titanium tetrachloride gas generated by the chlorination reaction is discharged from the top of the chlorination furnace 6 and enters the inside of a pipeline of the second heat exchanger 7 through the titanium tetrachloride gas inlet 7-2, and CaCl cooled by the first heat exchanger 5 is simultaneously used as the CaCl gas2The solution is passed through cooled CaCl2The solution inlet 7-1 enters the shell of the second heat exchanger 7 to cool the titanium tetrachloride gas, and CaCl after heat exchange2The solution enters CaCl2The cooled titanium tetrachloride gas enters a titanium tetrachloride collecting tank 9 in the solution storage tank II 8, and the titanium tetrachloride liquid enters the titanium tetrachloride collecting tank 9 to spray the titanium tetrachloride gas so that the titanium tetrachloride gas is dissolved in tetrachloroAnd the titanium liquid is treated in the next procedure.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The energy recycling type titanium tetrachloride production system comprises a liquid chlorine tank, wherein a liquid chlorine control valve is arranged at the lower end of the liquid chlorine tank, and the energy recycling type titanium tetrachloride production system is characterized in that CaCl is arranged on one side of the liquid chlorine tank2Solution storage tank, said CaCl2The lower end of the solution storage tank is passed through CaCl2The solution control valve is provided with a first heat exchanger, a liquid chlorine tank and CaCl2The solution storage tank is respectively connected with the side part and the top part of the first heat exchanger, the bottom part of the first heat exchanger is connected with the shell inlet of the second heat exchanger, the other side part of the first heat exchanger is connected with the bottom part of the chlorination furnace, the top part of the chlorination furnace is connected with the gas pipeline inlet of the second heat exchanger, and the bottom end of the second heat exchanger is provided with CaCl2And a gas pipeline outlet of the second heat exchanger is connected with a titanium tetrachloride collecting tank, and a spray pipe is arranged in the titanium tetrachloride collecting tank.
2. The energy recycling titanium tetrachloride production system according to claim 1, wherein said first heat exchanger is liquid chlorine and CaCl2Heat exchange between the solutions, the second heat exchanger being cooled CaCl2The solution and the titanium tetrachloride gas exchange heat.
3. The energy recycling titanium tetrachloride production system according to claim 2, wherein said first heat exchanger and said second heat exchanger are both tube and tube heat exchangers.
4. The energy recycling titanium tetrachloride production system according to claim 1, wherein the spray pipe is arranged at the inner top of the titanium tetrachloride collection tank, a plurality of spray heads are arranged on a pipeline of the spray pipe, and a plurality of liquid outlet holes are formed in the spray heads.
5. The energy recycling titanium tetrachloride production system according to claim 4, wherein an inlet is provided at one end of the shower pipe, and the inlet is provided at a side wall of the titanium tetrachloride collection tank.
6. The energy recycling titanium tetrachloride production system according to claim 5, wherein a plurality of groups of spray pipes are arranged at the top of the titanium tetrachloride collection tank.
7. The energy recycling titanium tetrachloride production system according to claim 1, wherein said first heat exchanger is provided with media inlets and outlets on the top, bottom and two sides, and the top of said first heat exchanger is provided with CaCl2A solution inlet with a cooled CaCl at the bottom2The solution outlet and the side part are provided with a tube pass inlet which is a liquid chlorine inlet, and the other side part is provided with a tube pass outlet which is a chlorine outlet.
8. The energy recycling titanium tetrachloride production system according to claim 1, wherein said second heat exchanger is also provided with media inlets and outlets on both sides and the bottom, and the tube side ports on both sides of the second heat exchanger are respectively cooled CaCl2A solution inlet, a titanium tetrachloride gas inlet and a titanium tetrachloride gas outlet, wherein CaCl is arranged at the bottom of the second heat exchanger2And (6) solution outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922206249.9U CN211770336U (en) | 2019-12-11 | 2019-12-11 | Energy recycling type titanium tetrachloride production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922206249.9U CN211770336U (en) | 2019-12-11 | 2019-12-11 | Energy recycling type titanium tetrachloride production system |
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| CN211770336U true CN211770336U (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2019
- 2019-12-11 CN CN201922206249.9U patent/CN211770336U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Denomination of utility model: Energy recycling type titanium tetrachloride production system Effective date of registration: 20230829 Granted publication date: 20201027 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN LONGXING TITANIUM INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2023980054031 |