CN218841986U

CN218841986U - Calcium hydrate production is with digestion reaction unit of multiple spot feedwater

Info

Publication number: CN218841986U
Application number: CN202223229044.0U
Authority: CN
Inventors: 曾志宇; 岳峰
Original assignee: Luoyang Gaifeng Industry And Trade Co ltd
Current assignee: Luoyang Gaifeng Industry And Trade Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-11
Anticipated expiration: 2032-12-02

Abstract

The utility model relates to a digestion reaction device of multiple spot feedwater for calcium hydrate production belongs to calcium hydrate production technical field. The partition plate, the top plate of the digester body and the side plate of the digester body are respectively provided with a cavity which is communicated with each other, a circulating water pipe is arranged in each cavity, a water outlet and a water inlet of each circulating water pipe are connected into the water tank, the circulation of water from bottom to top is realized through a circulating pump in the water tank, and in the circulation process, heat released by digestion reaction is absorbed and transferred to the first digestion bin close to the feed inlet; and a water spraying water pipe is distributed at the top end of the second digestion bin close to the feed inlet, a plurality of spray heads facing different positions inside the second digestion bin are arranged on the water spraying water pipe, and the water spraying water pipe is communicated with the circulating water pipe through a three-way joint. The method solves the technical problems that the reaction at the initial stage of the digestion reaction is slow and insufficient due to the low temperature of the initial materials, and the energy consumption is high when the initial temperature is increased by adopting hot water.

Description

Calcium hydrate production is with digestion reaction unit of multiple spot feedwater

Technical Field

The utility model relates to a calcium hydrate production technical field, specific digestion reaction unit of multiple spot feedwater for calcium hydrate production that says so.

Background

The calcium hydroxide is fine white powder, is usually prepared by the digestion reaction of quicklime powder and water, the digestion reaction is an exothermic reaction, but the initial temperature of the digestion reaction is lower than 60 ℃ required by national standard quicklime for silicate building products, so the initial reaction is slow and insufficient.

In order to increase the initial temperature of the digestion reaction, a plurality of water feeding points are usually arranged in a reaction bin at intervals, firstly, part of quicklime powder and water are subjected to the digestion reaction, and the temperature in the whole reaction bin is increased through the heat released by the part of the digestion reaction, but the initial temperature of the quicklime powder and the initial temperature of the water cannot be directly increased by the method, so that the initial reaction speed is still slow and incomplete, and after the reaction digestion reaction is finished, unreacted calcium oxide particles appear in the produced calcium hydroxide, and the quality and the grade of the calcium hydroxide are influenced.

In the prior art, the initial temperature of the digestion reaction is also increased by spraying hot water to the quicklime powder, and the digestion reaction is generally continuous production, so that more hot water is needed in the method, the energy consumption is higher, and the control of the production cost is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to solve because the reaction of the lower initial stage that leads to the digestion reaction of initial material temperature is slow and insufficient to and adopt hot water to improve the technical problem that initial temperature energy consumption is high, the utility model provides a digestion reaction unit of multiple spot feedwater for calcium hydrate production.

The utility model discloses a concrete scheme does, a digestion reaction unit of multiple spot feedwater for calcium hydrate production, including the digester body that top and bottom were provided with feed inlet and discharge gate respectively, be provided with a plurality of baffles in the digester body, the baffle divides digester body inner chamber into a plurality of digestion storehouses, and from feed inlet to discharge gate, forms end to end's bending channel in a plurality of digestion storehouses, all is provided with the transport auger in two digestion storehouses that are close to the feed inlet, the roof of baffle, digester body and the curb plate of digester body all have the cavity of mutual intercommunication, and the interior circulating water pipe that arranges of cavity, and circulating water pipe's delivery port and water inlet all link into the water tank, and realize the circulation from bottom to top of water through the circulating pump in the water tank, and in circulation process, absorb the heat transmission of digestion reaction release to the first digestion storehouse that is close to the feed inlet; and a plurality of spray heads facing different positions inside the second digestion bin are arranged on the water spray pipes, and the water spray pipes are communicated with the circulating water pipe through a three-way joint.

As an optimized scheme of the multi-point water supply digestion reaction device for producing the calcium hydroxide, the tee joint is close to the second digestion bin of the discharge hole.

As another optimization scheme of the multi-point water supply digestion reaction device for calcium hydroxide production, the number of the water spraying pipes is a plurality, and all the water spraying pipes are uniformly distributed on the top end face of the second digestion bin.

As another optimization scheme of the multi-point water supply digestion reaction device for calcium hydroxide production, a water inlet is formed in the top of the water tank, and a filter screen for filtering impurities is arranged on the water inlet.

As another optimization scheme of the multi-point water supply digestion reaction device for producing the calcium hydroxide, a transparent pipe for displaying the liquid level in the water tank is arranged on one side of the water tank.

As another optimization scheme of the multi-point water supply digestion reaction device for producing the calcium hydroxide, a stirring and conveying mechanism is arranged in a second digestion bin close to a discharge port, the stirring and conveying mechanism comprises a rotating shaft and a plurality of stirring blades, and the stirring blades are distributed on the rotating shaft in a staggered and uniform manner.

As another optimization scheme of the multi-point water supply digestion reaction device for calcium hydroxide production, the stirring blades are detachably arranged on the rotating shaft.

As another optimization scheme of the multi-point water supply digestion reaction device for producing the calcium hydroxide, a conveying belt for conveying materials is arranged in a first digestion bin close to a discharge port, and a discharge port of the conveying belt is positioned right above the discharge port.

As another optimization scheme of the multi-point water supply digestion reaction device for calcium hydroxide production, a heat insulation layer is arranged outside the digester body, and circulating water pipes extending from two ends of the partition plate are embedded in the heat insulation layer.

As another optimized scheme of the digestion reaction device for multi-point water supply for calcium hydroxide production, the digester body is further provided with a cyclone separator for separating solid particles mixed in hot air reversely flowing out of the bent channel.

Compared with the prior art, the utility model following beneficial effect has:

calcium hydrate production is with digestion reaction unit of multiple spot feedwater, absorb the heat of digestion reaction release through circulating pipe, the circulating water flows from bottom to top under the circulating pump effect, makes the circulation be in higher temperature to the circulating water that is close to the first digestion storehouse of feed inlet, preheats for the quick lime powder that is close to in the first digestion storehouse of feed inlet, improves quick lime's initial temperature. Meanwhile, the circulating water pipe conveys warm water to the water spraying water pipe through the tee joint and sprays the warm water to the quicklime powder in a second digestion bin close to the feed inlet through the spray head, so that the initial temperature of the quicklime powder and water in the initial stage of digestion reaction is increased, and the initial speed of the digestion reaction is increased; along with the stirring effect of the conveying auger, the digestion reaction is more sufficient, and calcium oxide particles which are not fully reacted are prevented from being mixed in the calcium hydroxide, so that the quality and the grade of the calcium hydroxide are improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view showing an arrangement of circulating water pipes in a cavity of a partition, a top plate or a side plate;

in the drawings: 1. the digester body, 101, feed inlet, 102, discharge gate, 2, baffle, 3, digestion storehouse, 301, the passageway of buckling, 302, stirring conveying mechanism, 3021, pivot, 3022, stirring vane, 303, conveyer belt, 4, carry the auger, 5, the cavity, 501, circulating pipe, 502, circulating pump, 6, the water tank, 601, the water inlet, 602, the hyaline tube, 7, the water spray pipe, 701, the shower nozzle, 8, three way connection, 9, the heat preservation, 10, the motor.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the following embodiments, and the parts of the present invention not described and disclosed in detail in the following embodiments should be understood as the prior art known or should be known to those skilled in the art, such as the conveying auger 4, the motor 10, the conveyor belt 303, the cyclone separator, etc.

As shown in fig. 1, a digestion reaction device of multi-point water supply for calcium hydroxide production in the prior art comprises a digester body 1 with a feed inlet 101 and a discharge outlet 102, wherein the feed inlet 101 is located at the top end of the digester body 1, the discharge outlet 102 is located at the bottom end of the digester body 1, the digester body 1 is divided into a plurality of digestion bins 3 by a plurality of transversely arranged partition plates 2, and from the feed inlet 101 to the discharge outlet 102, end-to-end bent channels 301 are formed in the plurality of digestion bins 3, materials flow along the bent channels 301, and finally products of the digestion reaction are discharged through the discharge outlet 102, wherein in order to fully mix and react water and quicklime powder, conveying augers 4 are arranged in two digestion bins 3 close to the feed inlet 101.

As shown in fig. 1, different from the prior art, the partition board 2, the top plate of the digester body 1 and the side plate of the digester body 1 are all provided with cavities 5 which are communicated with each other, a circulation water pipe 501 which is distributed in a bent manner is arranged in the cavity 5, a water outlet and a water inlet of the circulation water pipe 501 are connected into the water tank 6, and the circulation water pipe 501 realizes the circulation of water from bottom to top through a circulation pump 502 in the water tank 6. The top end of the second digestion bin 3 close to the feed inlet 101 is distributed with a water spraying pipe 7, the water spraying pipe 7 is provided with a plurality of spray heads 701 facing different positions inside the second digestion bin 3, and the water spraying pipe 7 is communicated with the circulating water pipe 501 through a three-way joint 8. Namely, the first digestion bin 3 close to the feed inlet 101 is a preheating bin and is mainly used for scattering quicklime powder and improving the initial temperature of the quicklime powder, the first digestion bin 3 close to the discharge outlet 102 is an output bin and is used for sending out calcium hydroxide completely produced by reaction from the discharge outlet 102, and the digestion bin 3 between the first digestion bin 3 close to the feed inlet 101 and the first digestion bin 3 close to the discharge outlet 102 is a digestion reaction bin, so that a large amount of heat is released by digestion reaction; as the circulating water circulates from bottom to top along the circulating water pipe 501, the circulating water absorbs the heat released by the digestion reaction in the digestion reaction bin according to the energy conservation principle as the initial temperature of the quicklime powder is low, and transfers the heat to the quicklime powder as the circulating water circulates upwards, and increases the initial temperature of the quicklime powder.

Wherein, baffle 2, the roof of digester body 1 and the curb plate of digester body 1 are the higher steel sheet of coefficient of heat conductivity, do benefit to circulating pipe 501 and absorb the heat of digestion reaction release, also do benefit to circulating pipe 501 simultaneously and improve quick lime powder's initial temperature with heat transfer when being close to the first digestion storehouse 3 of feed inlet 101, circulating pipe 501 distribution of buckling is in cavity 5 simultaneously, can prolong circulating pipe 501 dwell time in cavity 5, the extension is in the digestion reaction storehouse with the dwell time in quick lime powder preheating storehouse, further fully absorb the heat of digestion reaction release, and transmit for quick lime powder.

Meanwhile, the reaction in the digester body 1 is a continuous reaction, the temperature of circulating water in the circulating water pipe 501 rises along with the heat released by the circulating water absorption digestion reaction, the water spraying water pipe 7 is communicated with the circulating water pipe 501 through the three-way joint 8, and hot water is sprayed into quick lime powder equivalently, so that the initial temperature of initial reaction water and the initial temperature of the quick lime powder are increased, and the initial speed of the digestion reaction is further increased. In order to raise the initial temperature of the water spray pipe 7 as quickly as possible, the three-way joint 8 is arranged at the position of the second digestion chamber 3 close to the discharge port 102.

In order to enable preheated quicklime powder to be in rapid contact with water and react, a plurality of different water spraying water pipes 7 are arranged at the top of the second digestion bin 3 close to the feed inlet 101, all the water spraying water pipes 7 are uniformly distributed on the top end face of the second digestion bin 3, and different spray heads 701 are uniformly distributed on each water spraying water pipe 7, so that multi-point watering is realized, and the water and the quicklime powder are in full contact and react.

Along with shower nozzle 701 lasts to outwards spraying water, the circulating water in the water tank 6 lasts to reduce, need be provided with water inlet 601 through being located the top of water tank 6 and add water in to water tank 6, simultaneously in order to prevent that the aquatic of adding from containing impurity, sets up the filter screen that is used for filtering impurity on water inlet 601, guarantees the cleanliness of the circulating water in circulating pipe 501. In order to facilitate timely acquisition, the height of the liquid level in the water tank 6 is provided with a transparent pipe 602 communicated with the water tank 6 on the outer wall of the water tank 6, the top end of the transparent pipe 602 is directly communicated with the atmospheric pressure, the height of the liquid level in the water tank 6 is timely known according to the communicating vessel principle, and water is directly added into the water tank 6 through the water inlet 601 when the water in the water tank 6 is less.

In order to prevent the material conveying mechanism between the second digestion chamber 3 close to the feeding inlet 101 and the first digestion chamber 3 close to the discharging outlet 102 from being damaged, the stirring and conveying mechanism 302 therein is designed into a split type, wherein the stirring and conveying mechanism 302 comprises a rotating shaft 3021 and a plurality of stirring blades 3022, the plurality of stirring blades 3022 are detachably and uniformly distributed on the rotating shaft 3021 in a staggered manner, the stirring blades 3022 can be fixed on the rotating shaft 3021 in a bolt connection manner, and when a single stirring blade 3022 or the rotating shaft 3021 is damaged, the single stirring blade 3022 or the rotating shaft 3021 can be directly and independently replaced, thereby saving time and labor.

In order to improve the output efficiency of the calcium hydroxide produced by digestion from the digester body 1, a conveyor belt 303 for conveying materials is arranged in the first digestion bin 3 close to the discharge port 102, and the conveyor belt 303 has the characteristics of high transmission efficiency and low cost. And the feed opening of the conveyor belt 303 is positioned right above the discharge opening 102, and the calcium hydroxide is discharged from the discharge opening 102 by the self weight of the calcium hydroxide, so that energy conservation and emission reduction are realized.

Because this calcium hydrate production is with digestion reaction unit of multiple spot feedwater, the initial temperature that mainly improves quick lime powder and water through the heat that utilizes the digestion reaction to release improves the initial speed of digestion reaction, so is provided with heat preservation 9 outside digester body 1, prevents that the digestion reaction heat from dispelling outward. And the circulating water pipes 501 extending from both ends of the partition board 2 are embedded inside the heat insulating layer 9.

Along with the continuous progress of digestion reaction, be mingled with more high temperature dust in the digester body 1, digester body 1 is external to have cyclone, and cyclone is used for separating the solid particle that is mingled with in the hot-blast reverse outflow from tortuous passageway 301.

Claims

1. The utility model provides a digestion reaction unit of multiple spot feedwater for calcium hydrate production, including top and bottom digester body (1) that are provided with feed inlet (101) and discharge gate (102) respectively, be provided with a plurality of baffles (2) in digester body (1), baffle (2) fall into a plurality of digestion storehouses (3) with digester body (1) inner chamber, and from feed inlet (101) to discharge gate (102), form passageway (301) of buckling of end to end in a plurality of digestion storehouses (3), all be provided with in two digestion storehouses (3) that are close to feed inlet (101) and carry auger (4), its characterized in that: the partition plate (2), the top plate of the digester body (1) and the side plate of the digester body (1) are respectively provided with a cavity (5) which are communicated with one another, a circulating water pipe (501) is arranged in each cavity (5), a water outlet and a water inlet of each circulating water pipe (501) are connected into the water tank (6), the water is circulated from bottom to top through a circulating pump (502) in the water tank (6), and in the circulating process, heat released by digestion reaction is absorbed and transferred to the first digestion bin (3) close to the feed inlet (101); the top end of the second digestion bin (3) close to the feed inlet (101) is distributed with a water spraying pipe (7), the water spraying pipe (7) is provided with a plurality of spray heads (701) facing different positions in the second digestion bin (3), and the water spraying pipe (7) is communicated with the circulating water pipe (501) through a three-way joint (8).

2. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: the three-way joint (8) is close to the second digestion bin (3) of the discharge hole (102).

3. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: the number of the water spraying pipes (7) is a plurality of, and all the water spraying pipes (7) are uniformly distributed on the top end surface of the second digestion bin (3).

4. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: the top of water tank (6) is provided with water inlet (601), and sets up the filter screen that is used for filtering impurity on water inlet (601).

5. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: and a transparent pipe (602) for displaying the liquid level in the water tank (6) is arranged on one side of the water tank (6).

6. The digestion reaction apparatus for the multi-point feed water for calcium hydroxide production according to claim 1, characterized in that: a stirring and conveying mechanism (302) is arranged in the second digestion bin (3) close to the discharge port (102), the stirring and conveying mechanism (302) comprises a rotating shaft (3021) and a plurality of stirring blades (3022), and the plurality of stirring blades (3022) are distributed on the rotating shaft (3021) in a staggered manner.

7. The multi-point water supply digestion reaction device for calcium hydroxide production according to claim 6, characterized in that: the stirring blade (3022) is detachably mounted on the rotating shaft (3021).

8. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: a conveyor belt (303) for conveying materials is arranged in the first digestion bin (3) close to the discharge port (102), and a feed opening of the conveyor belt (303) is positioned right above the discharge port (102).

9. The multi-point feedwater digestion reaction device for calcium hydroxide production according to claim 1, wherein: the digester body (1) is externally provided with a heat preservation layer (9), and circulating water pipes (501) extending from two ends of the partition plate (2) are embedded in the heat preservation layer (9).

10. The digestion reaction apparatus for the multi-point feed water for calcium hydroxide production according to claim 1, characterized in that: the digester body (1) is further provided with a cyclone separator for separating solid particles entrained in hot air reversely flowing out of the bent channel (301).