CN213208684U - Reactor big lid waste heat recovery utilizes device - Google Patents
Reactor big lid waste heat recovery utilizes device Download PDFInfo
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- CN213208684U CN213208684U CN202021187373.1U CN202021187373U CN213208684U CN 213208684 U CN213208684 U CN 213208684U CN 202021187373 U CN202021187373 U CN 202021187373U CN 213208684 U CN213208684 U CN 213208684U
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Abstract
The utility model discloses a reactor big lid waste heat recovery utilizes device belongs to energy-concerving and environment-protective technical field. The problems of low heat exchange efficiency, high investment cost and low heat utilization efficiency of a waste heat recovery device in the sponge titanium preparation process in the prior art are solved. The technical scheme of the utility model is that: the device comprises a large reactor cover and a preheating coil, wherein the preheating coil is positioned on the inner side of the large reactor cover and is in contact with the large reactor cover, a titanium tetrachloride inlet plug is arranged on the large reactor cover, a pipeline communicated with the reactor is arranged in the titanium tetrachloride inlet plug, one end of the preheating coil is connected with the pipeline, and a titanium tetrachloride interface is arranged at the other end of the preheating coil. The utility model discloses both realized the recycle of reaction waste heat, can reduce the temperature of reaction region again, need not carry out the heat exchange with other media moreover, also need not lay the pipeline, can improve heat exchange efficiency and heat utilization efficiency, reduce investment cost, be applicable to the recycle of titanium sponge preparation in-process reaction waste heat.
Description
Technical Field
The utility model belongs to the technical field of energy-concerving and environment-protective, concretely relates to big lid waste heat recovery utilizes device of reactor.
Background
At present, the titanium sponge produced by industry at home and abroad adopts a method for reducing titanium tetrachloride by magnesium, titanium tetrachloride is directly introduced into a closed container, the reduction of titanium tetrachloride by magnesium is an exothermic reaction, and the main chemical reaction is as follows: TiCl (titanium dioxide)4+Mg→MgCl2+ Q, directly radiating reaction heat to the large cover bottom plate, and particularly, in the later stage of reduction charging, thermally corroding the large cover bottom plate, and mixing impurity iron into the product to cause the iron content in the product to be higher; if the redundant heat can not be discharged in time, the temperature of a reaction area is overhigh, the structure of the titanium sponge is compact, the later-stage distillation process is influenced, a large amount of magnesium, chlorine and other impurity elements remain in the titanium sponge, and the quality of the titanium sponge is reduced. Meanwhile, heat cannot be timely led out in the reaction process, and the temperature of mixed gas (mainly titanium tetrachloride and low-price substances containing a small amount of titanium) between the large cover and the bottom plate and the magnesium liquid level is too high, so that when the reaction pressure in the reactor is higher, the excess of the mixed gas needs to be treated according to the production process requirementsThe mixed gas is discharged out of the reactor, which not only causes raw material loss, but also causes pollution to the atmosphere and influences the health of operators.
In order to ensure that the heat generated during reduction can be discharged in time, the titanium sponge reduction furnace needs to be ventilated and cooled. However, the direct discharging mode not only causes a great deal of heat waste, but also does not accord with the development concepts of energy conservation, consumption reduction and environmental protection of modern enterprises, and has great influence on the operation environment, especially the operation in the severe summer period. In the prior art, most of waste heat recovery devices related to the preparation of titanium sponge by a magnesium thermal method are introduced into a heat exchanger through a pipeline, perform heat exchange with other media such as water and the like, and then collect and use hot water. On one hand, the method has low heat exchange efficiency, and on the other hand, the application site of the waste heat is generally far away from the production site of the titanium sponge, and pipelines need to be laid to lead out heat exchange media, so that the investment cost is increased, and the heat utilization efficiency is reduced; in addition, the burden of the pipe gallery is increased by laying the pipeline, and certain potential safety hazards exist.
Therefore, it is desirable to improve the heat transfer recovery.
SUMMERY OF THE UTILITY MODEL
To the problem that waste heat recovery device heat exchange efficiency among the prior art in the sponge titanium preparation process is low, investment cost is high, heat utilization efficiency is low, the utility model provides a reactor covers waste heat recovery device greatly, its aim at: the investment cost is reduced, and the heat exchange efficiency and the heat utilization efficiency are improved.
The utility model adopts the technical scheme as follows:
the utility model provides a reactor large cover waste heat recovery utilizes device, includes reactor large cover and preheating coil, preheating coil is located the inboard of reactor large cover and contacts with reactor large cover, be provided with titanium tetrachloride inlet plug on the reactor large cover, the inside pipeline that communicates with the reactor that is provided with of titanium tetrachloride inlet plug, preheating coil's one end with the pipe connection, the other end is provided with the titanium tetrachloride interface.
After the technical scheme is adopted, the preheating coil can absorb the heat emitted from the large cover of the reactor and utilize the heatThe heat preheats the liquid titanium tetrachloride in the preheating coil pipe, the gasification of the liquid titanium tetrachloride is accelerated, the titanium tetrachloride absorbs heat and gasifies, and meanwhile, the surplus heat on the large cover of the reactor is taken away, so that the heat transfer of a reaction area is promoted. The utility model avoids the problems that the temperature of the central part is higher and the heat is difficult to dissipate due to liquid-liquid reaction when the titanium tetrachloride is not completely gasified during the traditional titanium tetrachloride center feeding, and reduces the possibility that the densification of the titanium sponge is caused by the higher reaction temperature; overcomes the defect that the heat dissipation of the central position of the upper part of the reactor is not in time, which causes the sintering of the titanium sponge at the central position and the MgCl filling at the central position2The problem of compact structure due to a large number of hard blocks is solved, and the grade rate and the qualification rate of products are improved; the utility model utilizes the reduction waste heat to promote the gasification of titanium tetrachloride and the heat transfer of the large cover of the reactor, thereby not only improving the energy utilization rate, but also improving the quality of the titanium sponge; the utility model discloses a gasification is reinforced, makes titanium sponge stick together the structure and improves, and the product structure is even, does benefit to Mg and MgCl during the distillation2Thereby reducing the distillation time of the titanium sponge; the feeding mode of the utility model reduces the discharge times of the mixed gas and improves the working environment of the operators; the waste heat generated in the reactor is used on the spot, heat exchange with other media is not needed, pipelines are not needed to be laid, the heat exchange efficiency and the heat utilization efficiency can be improved, the investment cost is reduced, and the reactor is simple in structure and reliable in operation.
The plane of the preheating coil is an arc surface, and the arc surface has the same radian as the large cover of the reactor.
After the optimized scheme is adopted, the contact area between the preheating coil and the large cover of the reactor is larger, the heat exchange efficiency is higher, and the gasification of the liquid titanium tetrachloride can be accelerated.
The number of the preheating coils is one group or multiple groups.
After adopting this preferred scheme, can increase heat absorption area, improve heat exchange efficiency, can avoid preheating coil pipe to block up and influence normal production moreover.
The winding mode of the preheating coil is spiral winding or zigzag winding.
After the preferred scheme is adopted, the preheating coil pipe has various coiling modes and stronger adaptability.
The preheating coil is single-layer or multi-layer.
After the optimized scheme is adopted, the preheating coil adopts multilayer arrangement, so that the preheating time of the liquid titanium tetrachloride can be prolonged, the gasification of the titanium tetrachloride is accelerated, and the efficiency of waste heat recovery is improved.
The distribution mode of the preheating coil pipes is one or more of semicircular distribution, fan-shaped distribution, synchronous spiral distribution or polygonal distribution.
After adopting this preferred scheme, preheating coil's distribution mode is various, can set up according to the needs of particular case, and the adaptability is stronger.
The diameter of the preheating coil is 10-100 mm.
After the preferred scheme is adopted, the diameter of the preheating coil is proper, so that blockage caused by too small diameter can be avoided, and the influence on the heat absorption efficiency caused by too small heat transfer area caused by too large diameter can be avoided.
The preheating coil is made of carbon steel, stainless steel, titanium or titanium alloy.
After the preferred scheme is adopted, the heat conductivity coefficient of carbon steel, stainless steel, titanium or titanium alloy is high, the heat transfer is fast, and the heat exchange efficiency and the heat utilization efficiency can be improved.
The titanium tetrachloride interface is connected with a titanium tetrachloride supply control unit, and the titanium tetrachloride supply control unit comprises a control valve.
After the preferred scheme is adopted, the feeding speed and the feeding amount of the titanium tetrachloride can be controlled by controlling the valve.
A method for recycling waste heat of a large cover of a reactor comprises the following steps of:
s1: liquid titanium tetrachloride is conveyed to the reactor large-cover waste heat recycling device through a pipeline, and flows into the preheating coil pipe under the action of pipeline pressure;
s2: the liquid titanium tetrachloride in the preheating coil absorbs the heat from the large cover of the reactor and is gradually gasified;
s3: gaseous titanium tetrachloride enters the reactor through a tube in the titanium tetrachloride inlet plug and undergoes a reduction reaction with liquid magnesium in the reactor.
After the technical scheme is adopted, the reaction intensity degree of gaseous titanium tetrachloride and liquid magnesium is low, the densification of titanium sponge caused by overhigh temperature of a reaction area can be avoided, and the preheating coil can absorb heat on a large cover of the reactor to gasify the liquid titanium tetrachloride, so that the waste heat of the reaction can be recycled, and the temperature of the reaction area can be reduced. The utility model discloses need not carry out the heat exchange with other media, also need not lay the pipeline, can not increase the burden of piping lane, can improve heat exchange efficiency and heat utilization efficiency, reduce investment cost, simple structure moves reliably moreover, has reduced the potential safety hazard.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the preheating coil can absorb heat emitted from the large cover of the reactor, and liquid titanium tetrachloride in the preheating coil is preheated by the heat, so that the gasification of the liquid titanium tetrachloride is accelerated, the titanium tetrachloride absorbs heat for gasification and takes away redundant heat on the large cover of the reactor, and the heat transfer of a reaction area is promoted. The utility model avoids the problems that the temperature of the central part is higher and the heat is difficult to dissipate due to liquid-liquid reaction when the titanium tetrachloride is not completely gasified during the traditional titanium tetrachloride center feeding, and reduces the possibility that the densification of the titanium sponge is caused by the higher reaction temperature; overcomes the defect that the heat dissipation of the central position of the upper part of the reactor is not in time, which causes the sintering of the titanium sponge at the central position and the MgCl filling at the central position2The problem of compact structure due to a large number of hard blocks is solved, and the grade rate and the qualification rate of products are improved; the utility model utilizes the reduction waste heat to promote the gasification of titanium tetrachloride and the heat transfer of the large cover of the reactor, thereby not only improving the energy utilization rate, but also improving the quality of the titanium sponge; the utility model discloses a gasification is reinforced, makes titanium sponge stick together the structure and improves, and the product structure is even, does benefit to Mg and MgCl during the distillation2Thereby reducing the distillation time of the titanium sponge; the feeding mode of the utility model reduces the discharge times of the mixed gas and improves the working environment of the operators; inside the reactorThe waste heat of production uses on the spot, need not carry out heat exchange with other media, also need not lay the pipeline, can improve heat exchange efficiency and heat utilization efficiency, reduces investment cost, and simple structure operation is reliable moreover.
2. The plane of the preheating coil is the arc surface which is the same as the radian of the large reactor cover, the contact area of the preheating coil and the large reactor cover is larger, the heat exchange efficiency is higher, and the gasification of the liquid titanium tetrachloride can be accelerated.
3. The quantity of preheating coil pipe is a set of or multiunit, can increase heat absorption area, improves heat exchange efficiency, can avoid preheating coil pipe to block up and influence normal production moreover.
4. The winding mode of the preheating coil is spiral winding or back winding, so that the adaptability is stronger.
5. The preheating coil adopts multilayer arrangement, which can increase the preheating time of the liquid titanium tetrachloride, accelerate the gasification of the titanium tetrachloride and improve the efficiency of waste heat recovery.
6. The distribution mode of preheating coil pipe is various, can set up according to the needs of particular case, and the adaptability is stronger.
7. The diameter of the preheating coil is proper, so that blockage caused by too small diameter can be avoided, and the influence on heat absorption efficiency caused by too small heat transfer area caused by too large diameter can be avoided.
8. Carbon steel, stainless steel, titanium or titanium alloy have high heat conductivity coefficient and fast heat transfer, and can improve the heat exchange efficiency and the heat utilization efficiency.
9. The feeding speed and the feeding amount of the titanium tetrachloride can be controlled by controlling the valve.
10. Gaseous titanium tetrachloride and liquid magnesium react to a lower intensity degree, so that the densification of the titanium sponge caused by overhigh temperature in a reaction area can be avoided, and the preheating coil can absorb heat on a large cover of the reactor to gasify the liquid titanium tetrachloride, thereby not only realizing the recycling of reaction waste heat, but also reducing the temperature in the reaction area. The utility model discloses need not carry out the heat exchange with other media, also need not lay the pipeline, can not increase the burden of piping lane, can improve heat exchange efficiency and heat utilization efficiency, reduce investment cost, simple structure moves reliably moreover, has reduced the potential safety hazard.
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;
fig. 2 is a schematic structural diagram of another view angle of the present invention.
Wherein, the reactor comprises a 1-titanium tetrachloride interface, a 2-preheating coil, a 3-titanium tetrachloride inlet plug and a 4-reactor large cover.
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 simplification of the description, but do not indicate or imply that the devices or elements indicated 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.
The present invention will be described in detail with reference to fig. 1 and 2.
Example one
The utility model provides a big lid waste heat recovery of reactor utilizes device, includes big lid 4 of reactor and preheating coil 2, preheating coil 2 is located the inboard of big lid 4 of reactor and contacts with big lid 4 of reactor, be provided with titanium tetrachloride inlet plug 3 on the big lid 4 of reactor, the inside pipeline that communicates with the reactor that is provided with of titanium tetrachloride inlet plug 3, preheating coil 2 one end with the pipe connection, the other end is provided with titanium tetrachloride interface 1.
The plane of the preheating coil 2 is an arc surface, and the arc surface has the same radian as the large cover 4 of the reactor.
The number of preheating coils 2 in this embodiment is one set.
In this embodiment, the preheating coil 2 is wound in a spiral manner.
The pre-heating coil 2 is a single layer in this example.
The distribution mode of the preheating coil 2 in this embodiment is synchronous spiral distribution.
The diameter of the preheating coil 2 in this example is 10 mm.
In this embodiment, the material of the preheating coil 2 is stainless steel.
In this embodiment, the titanium tetrachloride interface 1 is connected to a titanium tetrachloride supply control unit (not shown in the figure), and the titanium tetrachloride supply control unit includes a control valve (not shown in the figure).
The method for recycling the waste heat of the large cover of the reactor comprises the following steps:
s1: liquid titanium tetrachloride is conveyed to the reactor large-cover waste heat recycling device through a pipeline, and flows into the preheating coil 2 under the action of pipeline pressure;
s2: the liquid titanium tetrachloride in the preheating coil 2 absorbs the heat from the large cover 4 of the reactor and is gradually gasified;
s3: gaseous titanium tetrachloride enters the reactor through a pipe in the titanium tetrachloride inlet plug 3 and undergoes a reduction reaction with liquid magnesium in the reactor.
Example two
The utility model provides a big lid waste heat recovery of reactor utilizes device, includes big lid 4 of reactor and preheating coil 2, preheating coil 2 is located the inboard of big lid 4 of reactor and contacts with big lid 4 of reactor, be provided with titanium tetrachloride inlet plug 3 on the big lid 4 of reactor, the inside pipeline that communicates with the reactor that is provided with of titanium tetrachloride inlet plug 3, preheating coil 2 one end with the pipe connection, the other end is provided with titanium tetrachloride interface 1.
In this embodiment, the plane where the preheating coil 2 is located is an arc surface, and the arc surface has the same radian as the large reactor cover 4.
The number of the preheating coils 2 in the embodiment is multiple.
In this embodiment, the preheating coil 2 is wound in a zigzag manner.
The preheating coil 2 in this embodiment is multi-layered.
In this embodiment, the distribution of the preheating coils 2 is polygonal.
The diameter of the preheating coil 2 in this example is 100 mm.
In this embodiment, the material of the preheating coil 2 is titanium alloy.
In this embodiment, the titanium tetrachloride interface 1 is connected to a titanium tetrachloride supply control unit (not shown in the figure), and the titanium tetrachloride supply control unit includes a control valve (not shown in the figure).
The method for recycling the waste heat of the large cover of the reactor comprises the following steps:
s1: liquid titanium tetrachloride is conveyed to the reactor large-cover waste heat recycling device through a pipeline, and flows into the preheating coil 2 under the action of pipeline pressure;
s2: the liquid titanium tetrachloride in the preheating coil 2 absorbs the heat from the large cover 4 of the reactor and is gradually gasified;
s3: gaseous titanium tetrachloride enters the reactor through a pipe in the titanium tetrachloride inlet plug 3 and undergoes a reduction reaction with liquid magnesium in the reactor.
The following is the working principle of the utility model:
after the titanium tetrachloride interface 1 is connected with a titanium tetrachloride supply control unit, a control valve is opened to control the feeding speed and the feeding amount of titanium tetrachloride, after the titanium tetrachloride passes through the preheating coil 2, the liquid titanium tetrachloride absorbs heat from the large cover 4 of the reducer and is evaporated into gaseous titanium tetrachloride, and the gaseous titanium tetrachloride is conveyed into the reactor through a pipeline in the titanium tetrachloride inlet plug 3 and is subjected to reduction reaction with liquid magnesium in the reactor to generate spongy metal titanium.
The gaseous titanium tetrachloride and the liquid magnesium react to a lower intensity, so that the titanium sponge densification caused by overhigh temperature in a reaction area can be avoided. The utility model discloses both realize carrying out recycle to the reaction waste heat, can reduce the regional temperature of reaction again. And the utility model discloses do not need to carry out the heat exchange with other media, also need not lay the pipeline, can not increase piping lane's burden, can improve heat exchange efficiency and heat utilization efficiency, reduce investment cost, simple structure moves reliably moreover, has reduced the potential safety hazard.
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 (7)
1. The utility model provides a reactor big lid waste heat recovery utilizes device which characterized in that: including big lid of reactor (4) and preheating coil (2), preheating coil (2) are located the inboard of big lid of reactor (4) and contact with big lid of reactor (4), be provided with titanium tetrachloride inlet plug (3) on big lid of reactor (4), the inside pipeline that communicates with the reactor that is provided with of titanium tetrachloride inlet plug (3), preheating coil (2) one end with the pipeline is connected, and the other end is provided with titanium tetrachloride interface (1), the plane at preheating coil (2) place is the cambered surface, the cambered surface is the same with the radian of the big lid of reactor (4), the quantity of preheating coil (2) is a set of or multiunit.
2. The waste heat recycling device for the large cover of the reactor as recited in claim 1, wherein the winding manner of the preheating coil (2) is spiral winding or zigzag winding.
3. The device for recycling the waste heat of the large cover of the reactor as recited in claim 1, wherein the preheating coil (2) is single-layer or multi-layer.
4. The waste heat recycling device for the large cover of the reactor as claimed in claim 1, wherein the distribution of the preheating coils (2) is one of a semicircular distribution, a fan-shaped distribution, a synchronous spiral distribution or a polygonal distribution.
5. The waste heat recycling device for the large cover of the reactor as claimed in claim 1, wherein the diameter of the preheating coil (2) is 10-100 mm.
6. The waste heat recycling device for the large cover of the reactor as claimed in claim 1, wherein the material of the preheating coil (2) is carbon steel, stainless steel, titanium or titanium alloy.
7. The waste heat recycling device for the large cover of the reactor as claimed in claim 1, wherein the titanium tetrachloride interface (1) is connected with a titanium tetrachloride supply control unit, and the titanium tetrachloride supply control unit comprises a control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187373.1U CN213208684U (en) | 2020-06-23 | 2020-06-23 | Reactor big lid waste heat recovery utilizes device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187373.1U CN213208684U (en) | 2020-06-23 | 2020-06-23 | Reactor big lid waste heat recovery utilizes device |
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| Publication Number | Publication Date |
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| CN213208684U true CN213208684U (en) | 2021-05-14 |
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| CN202021187373.1U Active CN213208684U (en) | 2020-06-23 | 2020-06-23 | Reactor big lid waste heat recovery utilizes device |
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