CN209802109U - A waste heat utilization equipment for calcium aluminate powder production - Google Patents

A waste heat utilization equipment for calcium aluminate powder production Download PDF

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Publication number
CN209802109U
CN209802109U CN201920339936.5U CN201920339936U CN209802109U CN 209802109 U CN209802109 U CN 209802109U CN 201920339936 U CN201920339936 U CN 201920339936U CN 209802109 U CN209802109 U CN 209802109U
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tower body
drying tower
waste heat
air
heat utilization
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CN201920339936.5U
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乔友民
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Henan Million Water Source Mstar Technology Ltd
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Henan Million Water Source Mstar Technology Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model belongs to the technical field of calcium aluminate powder's production facility, a waste heat utilization equipment for calcium aluminate powder production is disclosed, which comprises a heat exchanger, thermostatic control device and spray drying device, thermostatic control device includes the gaseous heating cavity, controlling means and air supplement unit, be equipped with temperature-detecting device and heating device in the gaseous heating cavity, the air inlet of gaseous heating cavity links to each other with the air outlet of heat exchanger, spray drying device includes drying tower body, drying tower body bottom is equipped with gas distributor, gas distributor passes through the intake pipe and links to each other with the gas outlet of gaseous heating cavity, drying tower body's upper portion is equipped with liquid dispersion device, liquid dispersion device links to each other with the reservoir, drying tower body top is equipped with the gas outlet, gas outlet department is equipped with filter equipment, drying tower body bottom links to each other with the storage silo. The waste heat utilization device is arranged through a reasonable structure, so that the drying quality of the polyaluminium chloride can be ensured while waste heat utilization is realized.

Description

A waste heat utilization equipment for calcium aluminate powder production
Technical Field
The utility model belongs to the technical field of calcium aluminate powder's production facility, concretely relates to a waste heat utilization equipment for calcium aluminate powder production.
Background
The main component of the calcium aluminate powder is calcium dialuminate (CaO 2 Al)2O3) And calcium aluminate powder (CaO. Al)2O3) A mixture of (a). The calcium aluminate powder is prepared by mixing and grinding kaolin and limestone according to a certain proportion to a certain fineness, calcining the mixture in a rotary kiln at high temperature, and grinding the formed sinter. The calcium aluminate powder is mainly used as a raw material of polyaluminium chloride, a concrete expanding agent and a refractory material, and is widely applied to the fields of steel, chemical industry, fire resistance, environmental protection and the like.
In the preparation process of the calcium aluminate powder, the calcined material in the rotary kiln needs to be cooled firstly, and then the subsequent steps of grinding and the like are carried out, and if the heat in the cooling step is not utilized, the resource waste is caused. The method comprises the steps of reacting calcium aluminate powder with hydrochloric acid to obtain polyaluminium chloride in one step, adding water into a reaction tank, starting stirring slurry, then quantitatively adding hydrochloric acid, diluting to a required concentration, slowly adding the calcium aluminate powder for reaction, adding the calcium aluminate powder, reacting for 2 hours, adding water for diluting to a density of 1.25-1.26 when a pH test paper test is more than 3, discharging the materials to a sedimentation tank for sedimentation, obtaining a liquid product as a supernatant, and drying to obtain a solid polyaluminium chloride product.
SUMMERY OF THE UTILITY MODEL
Based on the situation, the inventor of the utility model utilizes the waste heat of the calcined calcium aluminate powder to the drying process of the polyaluminium chloride, thereby realizing the reasonable allocation of resources. Aiming at the idea, the utility model aims at providing a waste heat utilization equipment for calcium aluminate powder production through reasonable structure setting, when realizing waste heat utilization, can guarantee polyaluminium chloride's drying quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
A waste heat utilization device for calcium aluminate powder production, which comprises a heat exchanger, a constant temperature control device and a spray drying device, the constant temperature control device comprises a gas heating chamber, a control device and an air supplement device, a temperature detection device and a heating device are arranged in the gas heating chamber, the temperature detection device, the heating device and the air supplement device are respectively and electrically connected with the control device, the air inlet of the gas heating chamber is connected with the air outlet of the heat exchanger, the spray drying device comprises a drying tower body, the bottom of the drying tower body is provided with a gas distributor, the gas distributor is connected with a gas outlet of the gas heating chamber through a gas inlet pipe, the upper portion of drying tower body is equipped with liquid dispersion devices, liquid dispersion devices links to each other with the reservoir, and drying tower body top is equipped with the gas outlet, and gas outlet department is equipped with filter equipment, and drying tower body bottom links to each other with the storage silo through the discharge pump.
The utility model discloses in, combine together the use with heat exchanger and spray drying tower, realize that the waste heat in the high temperature calcium aluminate powder (rotary kiln calcines back high temperature material) carries out reasonable recycle, but retrieve the hot-blast problem that probably exists the temperature inconstant that obtains. Therefore, in the application process, in order to ensure the spray drying quality and ensure the constant temperature of the drying hot air, the utility model is provided with the constant temperature control device, and when the temperature of the hot air is lower than the set drying temperature, the heating device is started to supplement heat; when the temperature of the hot air is higher than the set drying temperature, the air supply device is started, and the cold air is introduced to reduce the temperature of the hot air. This temperature control is conventionally provided, for example, with reference to the heating control of a tankless water heater.
Preferably, the heating device is a gas combustion heating system or an electric heating device. The conventional arrangement is adopted for each heating mode.
The utility model discloses in, air supplement unit includes air feeder and flow control device. The air supply device can provide clean air without affecting the quality of spray drying, such as an air filtering device, an air conveying device and the like.
Preferably, the gas distributor comprises a vertical pipe and a mushroom-shaped head, wherein the gas inlet end of the vertical pipe is connected with the gas inlet pipe, the gas outlet end of the vertical pipe is connected with the mushroom-shaped head, and the mushroom-shaped head is provided with dispersion holes. The hot air is conveyed to the mushroom-shaped dispersing head through the air inlet pipe and the vertical pipe, so that the gas is dispersed, the dry gas is fully contacted with the material to be dried, and the drying efficiency is improved. In addition, the vertical pipe is mainly arranged for supporting the dispersing head, does not influence the bottom of the drying tower body to aggregate, and facilitates the discharge of dry materials.
According to the utility model discloses, liquid dispersion devices includes dispersion impeller and spiral nozzle, the dispersion impeller level sets up in the upper portion of drying tower body, the vertical lower part and the evenly distributed of connecting in the dispersion impeller of spiral nozzle, the dispersion impeller links to each other with the reservoir. The dispersion disc can adopt various conventional shapes as long as the dispersion disc can transfer liquid materials to the spiral nozzle for discharging.
Additionally, the utility model discloses in set up filter equipment in the gas outlet department of drying tower body, filter the dust in the gas, avoid air pollution and wasting of resources, filter equipment adopt conventional gas dust collector can.
The utility model discloses in still including other subassemblies that can make this waste heat utilization equipment normal use, all belong to the conventional selection in this field. Additionally, the utility model discloses in not all adopt the conventional means in this field with limited device or subassembly, for example, the utility model provides a temperature-detecting device, filter equipment, row's material pump etc. all can set up according to prior art.
The utility model discloses a waste heat utilization equipment's effect principle does: the method comprises the following steps that materials calcined in a rotary kiln exchange heat with air through a heat exchanger, hot air is adjusted in temperature through a constant temperature control device, and the specific temperature control process is that when a temperature detection device detects that the temperature of hot air is lower than a set drying temperature, a heating device is started to supplement heat; when the temperature of the hot air is higher than the set drying temperature, the air supplementing device is started, the cold air is introduced, the temperature of the hot air is reduced, the temperature of the hot air for drying is constant, the hot air with the adjusted temperature enters the drying tower body from the air distributor at the bottom of the drying tower body and exchanges heat with the liquid sprayed out of the liquid dispersing device, the liquid is dried, the dried powder is discharged through the discharge pump, and the gas is discharged after being filtered from the air outlet of the drying tower body.
The utility model discloses a rationally set up waste heat utilization equipment, combine together calcium aluminate powder production technology and polyaluminium chloride's production, realize calcium aluminate powder's waste heat utilization, the resource obtains integrating, avoids the energy waste, has reduced manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of the waste heat utilization device according to the embodiment.
Fig. 2 is a bottom view of the liquid dispersion device of fig. 1.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples
As shown in fig. 1-2, a waste heat utilization device for calcium aluminate powder production comprises a heat exchanger 1, a thermostatic control device and a spray drying device, wherein the thermostatic control device comprises a gas heating chamber 2, a control device and an air supplement device 3, a temperature detection device and a heating device are arranged in the gas heating chamber 2, the temperature detection device, the heating device and the air supplement device 3 are respectively electrically connected with the control device, an air inlet of the gas heating chamber 2 is connected with an air outlet of the heat exchanger 1, the spray drying device comprises a drying tower body 4, a gas distributor 5 is arranged at the bottom of the drying tower body 4, the gas distributor 5 is connected with an air outlet of the gas heating chamber 2 through an air inlet pipe, a liquid dispersion device 6 is arranged at the upper part of the drying tower body 4, and the liquid dispersion device 6 is connected with a liquid storage tank 7, the top of the drying tower body 4 is provided with an air outlet, the air outlet is provided with a filtering device 8, and the bottom of the drying tower body 4 is connected with a storage bin 10 through a discharge pump 9.
The heat exchanger 1 is combined with a spray drying tower for use, so that reasonable recycling of waste heat in high-temperature calcium aluminate powder (high-temperature material calcined in a rotary kiln) is realized, but the problem that the temperature of hot air obtained by recycling is not constant is solved. Therefore, in the application process, in order to ensure the spray drying quality and ensure the constant temperature of the drying hot air, the utility model is provided with the constant temperature control device, and when the temperature of the hot air is lower than the set drying temperature, the heating device is started to supplement heat; when the temperature of the hot air is higher than the set drying temperature, the air supply device 3 is started, and the cold air is introduced to reduce the temperature of the hot air.
The heating device is a gas combustion heating system or an electric heating device. The air supply device 3 comprises an air supply device and a flow control device. The gas supply device can provide clean gas without affecting the quality of spray drying.
The gas distributor 5 comprises a vertical pipe and a mushroom-shaped head, the gas inlet end of the vertical pipe is connected with the gas inlet pipe, the gas outlet end of the vertical pipe is connected with the mushroom-shaped head, and the mushroom-shaped head is provided with dispersion holes. The hot air is conveyed to the mushroom-shaped dispersing head through the air inlet pipe and the vertical pipe, so that the gas is dispersed, the dry gas is fully contacted with the material to be dried, and the drying efficiency is improved. In addition, the vertical pipe is mainly arranged for supporting the dispersing head, does not influence the bottom of the drying tower body 4 to aggregate, and facilitates the discharge of dry materials.
Liquid dispersion devices 6 includes dispersion impeller 11 and spiral nozzle 12, 11 levels of dispersion impeller set up in the upper portion of drying tower 4, spiral nozzle 12 is vertical to be connected in 11 lower parts of dispersion impeller and evenly distributed, dispersion impeller 11 links to each other with reservoir 7. The dispersion plate 11 can transfer liquid materials to the spiral nozzle 12 for discharging.
The air outlet of the drying tower body 4 is provided with a filtering device 8, dust in the air is filtered, air pollution and resource waste are avoided, and the filtering device 8 adopts a conventional air dust removal device.
The action principle of the waste heat utilization device is as follows: the method comprises the following steps that materials calcined in a rotary kiln exchange heat with air through a heat exchanger 1, hot air is adjusted in temperature through a constant temperature control device, and the specific temperature control process is that when a temperature detection device detects that the temperature of hot air is lower than a set drying temperature, a heating device is started to supplement heat; when the temperature of the hot air is higher than the set drying temperature, the air supplementing device is started, the cold air is introduced, the temperature of the hot air is reduced, the temperature of the hot air for drying is constant, the hot air with the adjusted temperature enters the drying tower body 4 from the air distributor 5 at the bottom of the drying tower body 4 and exchanges heat with the liquid sprayed out of the liquid dispersing device 6, the liquid is dried, the dried powder is discharged through the discharge pump 9, and the gas is discharged after being filtered from the air outlet of the drying tower body 4.
By reasonably arranging the structure of the waste heat utilization device, the production process of the calcium aluminate powder is combined with the production of the polyaluminium chloride, so that the waste heat utilization of the calcium aluminate powder is realized, the resources are integrated, the energy waste is avoided, and the production cost is reduced.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims (5)

1. The utility model provides a waste heat utilization equipment for calcium aluminate powder production, includes the heat exchanger, its characterized in that: still include thermostatic control device and spray drying device, thermostatic control device includes gaseous heating cavity, controlling means and air supplement unit, be equipped with temperature-detecting device and heating device in the gaseous heating cavity, temperature-detecting device, heating device and air supplement unit are connected with the controlling means electricity respectively, the air inlet of gaseous heating cavity with the air outlet of heat exchanger links to each other, spray drying device includes the drying tower body, and drying tower body bottom is equipped with gas distributor, gas distributor pass through the intake pipe with the gas outlet of gaseous heating cavity links to each other, the upper portion of drying tower body is equipped with liquid dispersion devices, liquid dispersion devices links to each other with the reservoir, and drying tower body top is equipped with the gas outlet, and gas outlet department is equipped with filter equipment, and drying tower body bottom links to each other with the storage silo through the blow-off pump.
2. The waste heat utilization device according to claim 1, characterized in that: the heating device is a gas combustion heating system or an electric heating device.
3. The waste heat utilization device according to claim 1, characterized in that: the air supplementing device comprises an air supply device and a flow control device.
4. The waste heat utilization device according to claim 1, characterized in that: the gas distributor comprises a vertical pipe and a mushroom-shaped head, wherein the gas inlet end of the vertical pipe is connected with the gas inlet pipe, the gas outlet end of the vertical pipe is connected with the mushroom-shaped head, and the mushroom-shaped head is provided with dispersion holes.
5. The waste heat utilization device according to claim 1, characterized in that: liquid dispersion device includes dispersion impeller and spiral nozzle, the dispersion impeller level sets up in the upper portion of drying tower body, the vertical lower part and the evenly distributed of connecting in the dispersion impeller of spiral nozzle, the dispersion impeller links to each other with the reservoir.
CN201920339936.5U 2019-03-18 2019-03-18 A waste heat utilization equipment for calcium aluminate powder production Active CN209802109U (en)

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Application Number Priority Date Filing Date Title
CN201920339936.5U CN209802109U (en) 2019-03-18 2019-03-18 A waste heat utilization equipment for calcium aluminate powder production

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Application Number Priority Date Filing Date Title
CN201920339936.5U CN209802109U (en) 2019-03-18 2019-03-18 A waste heat utilization equipment for calcium aluminate powder production

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197550A (en) * 2020-10-09 2021-01-08 马鞍山健鼎化工有限公司 Efficient drying device for producing polyaluminium chloride and working method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197550A (en) * 2020-10-09 2021-01-08 马鞍山健鼎化工有限公司 Efficient drying device for producing polyaluminium chloride and working method

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