CN103011081A - Neutralization device and method for hydrochloric acid regeneration and desiliconization - Google Patents

Neutralization device and method for hydrochloric acid regeneration and desiliconization Download PDF

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CN103011081A
CN103011081A CN2012105770225A CN201210577022A CN103011081A CN 103011081 A CN103011081 A CN 103011081A CN 2012105770225 A CN2012105770225 A CN 2012105770225A CN 201210577022 A CN201210577022 A CN 201210577022A CN 103011081 A CN103011081 A CN 103011081A
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mixing
neutralization reaction
mixing zone
reaction mixture
aeration
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周光升
陈琦
陆正华
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Baosteel Engineering and Technology Group Co Ltd
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Baosteel Engineering and Technology Group Co Ltd
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Abstract

The invention discloses a neutralization device and a neutralization method for hydrochloric acid regeneration and desiliconization. The device comprises a neutralization kettle; an inlet section of the neutralization kettle is connected with a waste acid supply pipe and a neutralizing chemical supply pipe respectively; a premixing zone, an aerating and mixing zone, a mechanical stirring and mixing zone and a short effluent stream resisting groove are contained inside the neutralization kettle; the premixing zone is formed by arranging a first clapboard in the inlet section of the neutralization kettle; the short effluent stream resisting groove is formed by arranging a second clapboard in an outlet section of the neutralization kettle; the mechanical stirring and mixing zone is located between the first clapboard and the second clapboard; and the aerating and mixing zone is below the premixing zone, the aerating and mixing zone and the short effluent stream resisting groove and connects the three with each other. According to the invention, the mixing efficiency and the reaction efficiency of the neutralization and oxidization of reactive mixed solution are increased, and the stability of ferric hydroxide is guaranteed, so that the desiliconization efficiency of the waste acid is guaranteed and the recycling of the waste acid is benefited.

Description

Regeneration of hydrochloric acid desiliconization neutralization reaction device and method
Technical field
The present invention relates to a kind of regeneration of hydrochloric acid desiliconization neutralization reaction device and method.
Background technology
At present, neutralization reaction tank of operated by rotary motion in the desilication process of regeneration of hydrochloric acid, by adding in the ammoniacal liquor etc. and medicament carries out neutralization reaction, when spent acid for example waste hydrochloric acid be neutralized to the pH value greater than 3 the time, iron ion in the spent acid begins to generate the precipitation of hydroxide particulate matter, by exposing to the sun into the air method, so that ferrous hydroxide is oxidized to ironic hydroxide rapidly, ironic hydroxide forms a large amount of flcos in the process of precipitation, silicon-dioxide and rapidly effective sedimentation that these flcos can adsorb in the spent acid form mud, the ultimate principle of waste hydrochloric acid desiliconization that Here it is.
But the pulling flow type reaction process of existing neutralization reaction process using, namely at the middle part of a neutralization reaction tank one stirring mechanism is set, mix by stirring mechanism, it is larger that the speed of its neutralization reaction is affected by the interior stirring intensity of temperature, free acid residual volume and neutralization reaction tank, aeration intensity etc., thereby cause whole neutralization reaction tank internal reaction abundant not.
Therefore developing the simple efficiently regeneration of hydrochloric acid desiliconization neutralization reaction device and method of a cover is very important for whole regeneration of hydrochloric acid desiliconization system.Existing neutralization reaction equipment operation condition is not good, easily causes the problem of following several respects:
Low when 1, high during the pH value, low when high during the generation of hydroxide three-iron, thus affect the effect of desiliconization;
2, overstand causes aeration rate uncontrollable;
3, response lag causes the excessive medicament that adds;
4, volume is excessive, easily causes the interior stirring intensity of neutralization reaction tank inadequate, and inner the appearance deposits;
5, Operation and Maintenance is cumbersome, need to regular people be desilting and dredge at the bottom of the tank and pipeline.
Therefore, how to provide a kind of improve spent acid and in and the hybrid reaction efficient of medicament, the regeneration of hydrochloric acid desiliconization neutralization reaction device and method that improves desilication efficiency be the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of regeneration of hydrochloric acid desiliconization neutralization reaction device and method, solution spent acid neutralization reaction is unstable, efficient is low, causes acid purification system desiliconization quality fluctuation of service, inefficient problem.
To achieve the above object, the present invention adopts following technical scheme:
A kind of regeneration of hydrochloric acid desiliconization neutralization reaction device, comprise the neutralization reaction tank, the entrance of described neutralization reaction tank is connected with the medicament supply pipe with being connected with the spent acid supply pipe respectively, described neutralization reaction tank inside comprises that pre-mixing district, aeration mixing zone, mechanical stirring mixing zone and fluid prevent short chute, described pre-mixing district arranges the first dividing plate by the entrance at described neutralization reaction tank and forms, and is used for mixing; The anti-short chute of described fluid arranges second partition by the outlet section at described neutralization reaction tank and forms, and is used for preventing short stream; Described mechanical stirring mixing zone is used for mixing between described the first dividing plate and second partition; Described aeration mixing zone is positioned at the below of the anti-short chute of described pre-mixing district, aeration mixing zone and fluid and with above-mentioned three's conducting, upwards flows for the air bubble that plays oxygenizement to the reaction mixture supply and driving a reaction mixing solutions.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction device, the bottom of described aeration mixing zone is provided with aeration tube,, described aeration tube is connected with aeration air supply pipe, and described aeration tube is provided with some bubble mouths for the blow out air bubble that makes progress.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction device, described pre-mixing arranges the first stirring mechanism in the district.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction device, described mechanical stirring mixing zone arranges the second stirring mechanism.
The invention also discloses a kind of regeneration of hydrochloric acid desiliconization neutralization reaction method, comprise the steps:
Step 1, spent acid and in and medicament flow in the pre-mixing district and form reaction mixture, reaction mixture in the pH value greater than 3 o'clock, iron ion in the spent acid begins to generate the ferrous hydroxide precipitation, and in whipping process so that reaction mixture towards current downflow, the reaction time of reaction mixture in whole pre-mixing district is 3-7min;
Step 2, reaction mixture flows into the aeration mixing zone down, be arranged at contacting and ferrous hydroxide being oxidized to ironic hydroxide of ferrous hydroxide in air bubble that the aeration tube of the bottom of aeration mixing zone upwards blows out and the reaction mixture, ironic hydroxide forms a large amount of flcos in the process of precipitation, these flcos can adsorb the silicon-dioxide in the spent acid, the volume ratio of aeration rate and spent acid amount is 8:1 to 10:1 in the aeration mixing zone, and the reaction time of reaction mixture in whole aeration mixing zone is 60-80min;
Step 3, under the drive of air bubble, reaction mixture upwards flows in the mechanical stirring mixing zone and continues to mix, simultaneously, reaction mixture flows in whipping process up, and the reaction time of reaction mixture in whole mechanical stirring mixing zone is 40-60min.
Step 4, reaction mixture upwards flow after the top that is subject to the neutralization reaction tank stops, flow downward and from and the bottom of retort enter the anti-short chute of fluid, discharge finally by overflow port.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, the flow velocity that the cross-sectional sizes of the anti-short chute of described fluid satisfies reaction mixture is 0.1-0.158m/s.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, adopt regeneration of hydrochloric acid desiliconization neutralization reaction device, described regeneration of hydrochloric acid desiliconization neutralization reaction device comprises the neutralization reaction tank, the entrance of described neutralization reaction tank is connected with the medicament supply pipe with being connected with the spent acid supply pipe respectively, it is characterized in that, described neutralization reaction tank inside comprises the pre-mixing district, the aeration mixing zone, mechanical stirring mixing zone and fluid are prevented short chute, described pre-mixing district arranges the first dividing plate by the entrance at described neutralization reaction tank and forms, be used for spent acid and and the pre-mixing of medicament form reaction mixture; The anti-short chute of described fluid arranges second partition by the outlet section at described neutralization reaction tank and forms, and is used for preventing the appearance of short stream; Described mechanical stirring mixing zone is used for further mixing of reaction mixture between described the first dividing plate and second partition; Described aeration mixing zone is positioned at the below of the anti-short chute of described pre-mixing district, aeration mixing zone and fluid and with above-mentioned three's conducting, is used for so that reaction mixture and air catalytic oxidation.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, the bottom of described aeration mixing zone is provided with aeration tube, and described aeration tube longitudinally is provided with some bubble mouths for the blow out air bubble.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, described pre-mixing arranges the first stirring mechanism in the district.
Preferably, in above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, described mechanical stirring mixing zone arranges the second stirring mechanism.
In sum, the regeneration of hydrochloric acid desiliconization neutralization reaction device and method that the present embodiment provides, existing neutralization reaction fluidised form and mixing principle have been changed, by anti-these four zones of short chute of pre-mixing district, aeration mixing zone, mechanical stirring mixing zone and fluid are set, formed the new neutralization reaction system device of a cover in reaction unit.By the pre-mixing district is set, shortened spent acid with in and medicament mix the needed time, simultaneously also Effective Raise the effect of mixing, begin to form the ferrous hydroxide precipitation in the pre-mixing district.Reaction mixture enters the aeration mixing zone afterwards, reaction mixture produces the simultaneously further hybrid reaction of upwelling under the effect of bubble, mainly be the oxidizing reaction that ferrous hydroxide is oxidized to ironic hydroxide, and in the forming process of ironic hydroxide, produce a large amount of flcos that are used for the silicon-dioxide of absorption spent acid.When reaction mixture arrives at the mechanical stirring mixing zone, it is large that bubble merges change gradually, mixing effect weakens, stirring by the mechanical stirring mixing zone further improves the effect of reaction and optimizes the fluidised form of retort internal mix reaction solution, prevent from alluvial occurring in the bottom of neutralization reaction tank, the anti-short chute of the fluid of the outlet section by being arranged on the neutralization reaction tank afterwards, after forcing the interior reaction mixture of neutralization reaction tank to enter the anti-short chute of fluid from the bottom, flow out from overflow port again, prevent the appearance of short stream.Thereby, Effective Raise the neutralization reaction of reaction mixture and mixing and the reaction efficiency of oxidizing reaction, guaranteed the stability of ironic hydroxide output, thereby guaranteed the efficient of spent acid desiliconization, be conducive to the recycling of spent acid.
To sum up, major advantage of the present invention:
⑴ the effect of neutralization reaction significantly improves, and volume can dwindle, and saves cost;
⑵ the pH value of control is more stable;
⑶ the output of ironic hydroxide is more stable, thus the better effects if of desiliconization;
⑷ overhaul of the equipments, easy to maintenance.
Description of drawings
Regeneration of hydrochloric acid desiliconization neutralization reaction device and method of the present invention is provided by following embodiment and accompanying drawing.
Fig. 1 is the structural representation of the regeneration of hydrochloric acid desiliconization neutralization reaction device of one embodiment of the invention;
Fig. 2 is the schematic flow sheet of the regeneration of hydrochloric acid desiliconization neutralization reaction method of one embodiment of the invention;
Among the figure, among the anti-short chute of 1-neutralization reaction tank, 2-pre-mixing district, 3-aeration mixing zone, 31-aeration tube, 4-mechanical stirring mixing zone, 5-fluid, 6-spent acid supply pipe, the 7-and medicament supply pipe, 8-aeration air supply pipe, 9-the first stirring mechanism, 10-the second stirring mechanism, 11-drain pipe, 12-the first dividing plate, 13-second partition.
Embodiment
Below will be described in further detail regeneration of hydrochloric acid desiliconization neutralization reaction device and method of the present invention.
Below with reference to accompanying drawings the present invention is described in more detail, has wherein represented the preferred embodiments of the present invention, should be appreciated that those skilled in the art can revise the present invention described here and still realize beneficial effect of the present invention.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as limitation of the present invention.
For clear, whole features of practical embodiments are not described.In the following description, be not described in detail known function and structure, the confusion because they can make the present invention owing to unnecessary details.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details to realize developer's specific objective, for example according to relevant system or relevant commercial restriction, change into another embodiment by an embodiment.In addition, will be understood that this development may be complicated and time-consuming, but only be routine work to those skilled in the art.
For purpose of the present invention, feature are become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-accurately ratio, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
Embodiment one
See also Fig. 1, the present embodiment provides a kind of regeneration of hydrochloric acid desiliconization neutralization reaction device, comprise neutralization reaction tank 1, the entrance of described neutralization reaction tank 1 is connected with being connected to be connected with the medicament supply pipe with spent acid supply pipe 6 respectively, described neutralization reaction tank 1 inside comprises pre-mixing district 2, aeration mixing zone 3, mechanical stirring mixing zone 4 and fluid are prevented short chute 5, described pre-mixing district 2 arranges the first dividing plate 12 by the entrance at described neutralization reaction tank 1 and forms, be used for spent acid and and the mixing of medicament, pre-mixing forms reaction mixture, the iron ion in the spent acid spent acid and in and begin to form the ferrous hydroxide precipitation in the reaction of medicament; The anti-short chute 5 of described fluid arranges second partition 13 by the outlet section at described neutralization reaction tank 1 and forms, be used for preventing the appearance of short stream, namely prevent reaction mixture in the situation that there is not abundant hybrid reaction to flow out through drain pipe 11 from the overflow port (not shown); Described mechanical stirring mixing zone 4 is between described the first dividing plate 12 and second partition 13, be used for mixing, be used for further mixing of reaction mixture, on the one hand so that reaction mixture continues hybrid reaction, on the other hand, optimize the fluidised form of reaction mixture, avoid alluvial occurring in the bottom of neutralization reaction tank; Described aeration mixing zone 3 is positioned at the below of the anti-short chute 5 of described pre-mixing district 2, aeration mixing zone 3 and fluid and with above-mentioned three's conducting, upwards flows for the air bubble that plays oxygenizement to the reaction mixture supply and driving a reaction mixing solutions.
Better, in the present embodiment, the bottom of described aeration mixing zone 3 is provided with aeration tube 31, and described aeration tube 31 longitudinally is provided with some bubble mouths for the blow out air bubble, and described aeration tube 31 is connected with the aeration air supply pipe 8 of outside.
By pre-mixing district 2 is set, shortened spent acid with in and medicament mix the needed time, simultaneously also Effective Raise the effect of mixing, begin to form the ferrous hydroxide precipitation in pre-mixing district 2.Reaction mixture enters aeration mixing zone 3 afterwards, reaction mixture produces the simultaneously further hybrid reaction of upwelling under the effect of bubble, mainly be the oxidizing reaction that ferrous hydroxide is oxidized to ironic hydroxide, and in the forming process of ironic hydroxide, produce a large amount of flcos that are used for the silicon-dioxide of absorption spent acid.When reaction mixture arrives at mechanical stirring mixing zone 4, it is large that bubble merges change gradually, mixing effect weakens, and the stirring by mechanical stirring mixing zone 4 further improves the effect of reaction and optimizes the fluidised form of retort internal mix reaction solution, prevents from alluvial occurring in the bottom of neutralization reaction tank 1.The anti-short chute 5 of the fluid of the outlet section by being arranged on the neutralization reaction tank afterwards flows out from overflow port after forcing reaction mixture in the neutralization reaction tank 1 to enter the anti-short chute 5 of fluid from the bottom again, thereby prevents the appearance of short stream.Therefore, Effective Raise of the present invention the neutralization reaction of reaction mixture and mixing and the reaction efficiency of oxidizing reaction, guaranteed the stability of ironic hydroxide output, thereby guaranteed the efficient of spent acid desiliconization, be conducive to the recycling of spent acid.
Embodiment two
See also Fig. 2, and please in conjunction with Fig. 1, the present embodiment provides a kind of regeneration of hydrochloric acid desiliconization neutralization reaction method, can adopt the one described regeneration of hydrochloric acid desiliconization neutralization reaction device such as embodiment, described reaction method comprises the steps:
Step 1, spent acid and in and medicament flow into (for example ammoniacal liquor) and flow in the pre-mixing district 2 and form reaction mixture, reaction mixture in the pH value greater than 3 o'clock, iron ion in the spent acid begins to generate ferrous hydroxide precipitation (neutralization reaction), and in whipping process so that reaction mixture towards current downflow, the reaction time of reaction mixture in whole pre-mixing district 2 is 3-7min.
Step 2, reaction mixture flows into aeration mixing zone 3 down, be arranged at contacting and ferrous hydroxide being oxidized to ironic hydroxide (oxidizing reaction) of ferrous hydroxide in air bubble that the aeration tube 31 of the bottom of aeration mixing zone 3 upwards blows out and the reaction mixture, the volume ratio of aeration rate and spent acid amount is 8:1 to 10:1, and the reaction time of reaction mixture in whole aeration mixing zone 3 is 60-80min.
Ironic hydroxide forms a large amount of flcos in the process of precipitation, silicon-dioxide and rapidly effective sedimentation that these flcos can adsorb in the spent acid form mud, that is to say, in ferrous hydroxide (white precipitation) is oxidized to the process of ironic hydroxide (red precipitation), form the intermediate product (flocks of greyish-green) of cotton-shaped ironic hydroxide, the intermediate product of the ironic hydroxide that these are cotton-shaped can adsorb in the spent acid silicon-dioxide and rapidly effectively sedimentation form mud.
Step 3, under the drive of air bubble, reaction mixture upwards flows into mechanical stirring mixing zone 4 interior continuation and mixes, proceed above-mentioned neutralization reaction and oxidizing reaction to improve the effect of reaction, and the fluidised form of the reaction mixture in the optimization neutralization reaction tank 1, avoid the sludge settling that is adsorbing silicon-dioxide in the reaction mixture to the bottom of neutralization reaction tank 1, simultaneously, reaction mixture flows in whipping process up, and the reaction time of reaction mixture in whole mechanical stirring mixing zone 4 is 40-60min.In mechanical stirring mixing zone 4, it is large that bubble merges change gradually, and mixing effect weakens to some extent, and the effect of stirring mainly is, optimizes the fluidised form of reaction mixture, is convenient to the overall flow of reaction mixture.
Step 4, reaction mixture upwards flow after the top that is subject to neutralization reaction tank 1 stops, flow downward and from and the bottom of retort 1 enter the anti-short chute 5 of fluid, discharge finally by overflow port.
In the present embodiment, by the anti-short chute 5 of fluid is set, can force reaction mixture first to upwards flowing again downstream to the bottom of neutralization reaction tank 1 and flowing out through overflow port, thereby guarantee that neutralization reaction tank 1 inside does not produce short stream, after guaranteeing that reaction mixture carries out abundant hybrid reaction, flow in next segment process through overflow port again.
Better, in the 4th step of above-mentioned regeneration of hydrochloric acid desiliconization neutralization reaction method, the flow velocity that the section area of the anti-short chute 5 of described fluid satisfies reaction mixture is 0.1-0.158m/s, the ironic hydroxide flco that this flow rates generates is not easy destroyed, is unlikely to again simultaneously in the anti-short chute 5 interior sedimentations of fluid.
In sum, the regeneration of hydrochloric acid desiliconization neutralization reaction device and method that the present embodiment provides, existing neutralization reaction fluidised form and mixing principle have been changed, by anti-these four zones of short chute of pre-mixing district, aeration mixing zone, mechanical stirring mixing zone and fluid are set, formed the new neutralization reaction system device of a cover in reaction unit.By the pre-mixing district is set, shortened spent acid with in and medicament mix the needed time, simultaneously also Effective Raise the effect of mixing, begin to form the ferrous hydroxide precipitation in the pre-mixing district.Reaction mixture enters the aeration mixing zone afterwards, reaction mixture produces the simultaneously further hybrid reaction of upwelling under the effect of bubble, mainly be the oxidizing reaction that ferrous hydroxide is oxidized to ironic hydroxide, and in the forming process of ironic hydroxide, produce a large amount of flcos that are used for the silicon-dioxide of absorption spent acid.When reaction mixture arrives at the mechanical stirring mixing zone, it is large that bubble merges change gradually, mixing effect weakens, stirring by the mechanical stirring mixing zone further improves the effect of reaction and optimizes the fluidised form of retort internal mix reaction solution, prevent from alluvial occurring in the bottom of neutralization reaction tank, the anti-short chute of the fluid of the outlet section by being arranged on the neutralization reaction tank afterwards, after forcing the interior reaction mixture of neutralization reaction tank to enter the anti-short chute of fluid from the bottom, flow out from overflow port again, prevent the appearance of short stream.Thereby, Effective Raise the neutralization reaction of reaction mixture and mixing and the reaction efficiency of oxidizing reaction, guaranteed the stability of ironic hydroxide output, thereby guaranteed the efficient of spent acid desiliconization, be conducive to the recycling of spent acid.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. regeneration of hydrochloric acid desiliconization neutralization reaction device, comprise the neutralization reaction tank, the entrance of described neutralization reaction tank is connected with the medicament supply pipe with being connected with the spent acid supply pipe respectively, it is characterized in that, described neutralization reaction tank inside comprises that pre-mixing district, aeration mixing zone, mechanical stirring mixing zone and fluid prevent short chute, described pre-mixing district arranges the first dividing plate by the entrance at described neutralization reaction tank and forms, and is used for mixing; The anti-short chute of described fluid arranges second partition by the outlet section at described neutralization reaction tank and forms, and is used for preventing short stream; Described mechanical stirring mixing zone is used for mixing between described the first dividing plate and second partition; Described aeration mixing zone is positioned at the below of the anti-short chute of described pre-mixing district, aeration mixing zone and fluid and with above-mentioned three's conducting, upwards flows for the air bubble that plays oxygenizement to the reaction mixture supply and driving a reaction mixing solutions.
2. regeneration of hydrochloric acid desiliconization neutralization reaction device according to claim 1, it is characterized in that, the bottom of described aeration mixing zone is provided with aeration tube, and described aeration tube is connected with aeration air supply pipe, and described aeration tube is provided with some bubble mouths for the blow out air bubble that makes progress.
3. regeneration of hydrochloric acid desiliconization neutralization reaction device according to claim 2 is characterized in that, described pre-mixing arranges the first stirring mechanism in the district.
4. regeneration of hydrochloric acid desiliconization neutralization reaction device according to claim 2 is characterized in that, described mechanical stirring mixing zone arranges the second stirring mechanism.
5. a regeneration of hydrochloric acid desiliconization neutralization reaction method is characterized in that, comprises the steps:
Step 1, spent acid and in and medicament flow in the pre-mixing district and form reaction mixture, reaction mixture in the pH value greater than 3 o'clock, iron ion in the spent acid begins to generate the ferrous hydroxide precipitation, and in whipping process so that reaction mixture towards current downflow, the reaction time of reaction mixture in whole pre-mixing district is 3-7min;
Step 2, reaction mixture flows into the aeration mixing zone down, be arranged at contacting and ferrous hydroxide being oxidized to ironic hydroxide of ferrous hydroxide in air bubble that the aeration tube of the bottom of aeration mixing zone upwards blows out and the reaction mixture, ironic hydroxide forms a large amount of flcos in the process of precipitation, these flcos can adsorb the silicon-dioxide in the spent acid, the volume ratio of aeration rate and spent acid amount is 8:1 to 10:1 in the aeration mixing zone, and the reaction time of reaction mixture in whole aeration mixing zone is 60-80min;
Step 3, under the drive of air bubble, reaction mixture upwards flows in the mechanical stirring mixing zone and continues to mix, simultaneously, reaction mixture flows in whipping process up, and the reaction time of reaction mixture in whole mechanical stirring mixing zone is 40-60min;
Step 4, reaction mixture upwards flow after the top that is subject to the neutralization reaction tank stops, flow downward and from and the bottom of retort enter the anti-short chute of fluid, discharge finally by overflow port.
6. regeneration of hydrochloric acid desiliconization neutralization reaction method according to claim 5 is characterized in that, the flow velocity that the cross-sectional sizes of the anti-short chute of described fluid satisfies reaction mixture is 0.1-0.158m/s.
7. regeneration of hydrochloric acid desiliconization neutralization reaction method according to claim 5, it is characterized in that, adopt regeneration of hydrochloric acid desiliconization neutralization reaction device, described regeneration of hydrochloric acid desiliconization neutralization reaction device comprises the neutralization reaction tank, the entrance of described neutralization reaction tank is connected with the medicament supply pipe with being connected with the spent acid supply pipe respectively, it is characterized in that, described neutralization reaction tank inside comprises the pre-mixing district, the aeration mixing zone, mechanical stirring mixing zone and fluid are prevented short chute, described pre-mixing district arranges the first dividing plate by the entrance at described neutralization reaction tank and forms, be used for spent acid and and the pre-mixing of medicament form reaction mixture; The anti-short chute of described fluid arranges second partition by the outlet section at described neutralization reaction tank and forms, and is used for preventing the appearance of short stream; Described mechanical stirring mixing zone is used for further mixing of reaction mixture between described the first dividing plate and second partition; Described aeration mixing zone is positioned at the below of the anti-short chute of described pre-mixing district, aeration mixing zone and fluid and with above-mentioned three's conducting, is used for so that reaction mixture and air catalytic oxidation.
8. regeneration of hydrochloric acid desiliconization neutralization reaction method according to claim 7 is characterized in that, the bottom of described aeration mixing zone is provided with aeration tube, and described aeration tube vertically is provided with some bubble mouths for the blow out air bubble along it.
9. regeneration of hydrochloric acid desiliconization neutralization reaction method according to claim 7 is characterized in that, described pre-mixing arranges the first stirring mechanism in the district.
10. regeneration of hydrochloric acid desiliconization neutralization reaction method according to claim 7 is characterized in that, described mechanical stirring mixing zone arranges the second stirring mechanism.
CN2012105770225A 2012-12-26 2012-12-26 Neutralization device and method for hydrochloric acid regeneration and desiliconization Pending CN103011081A (en)

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CN107537425A (en) * 2017-08-25 2018-01-05 金川集团股份有限公司 A kind of liquid liquid mixed reactor

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Application publication date: 20130403