CN216824895U

CN216824895U - Hydroxy methionine calcium neutralization crystallizer

Info

Publication number: CN216824895U
Application number: CN202123433705.7U
Authority: CN
Inventors: 陈彦飞; 王志轩; 郎咸东; 廖静
Original assignee: Shandong Xinhecheng Amino Acid Co ltd
Current assignee: Shandong Xinhecheng Amino Acid Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-28
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a hydroxy methionine calcium neutralization crystallizer, it has solved the less technical problem of neutralization inefficiency and crystal size in the current crystallizer, it is equipped with the crystallizer body, the upper portion arc of crystallizer body is covered and is connected hydroxy methionine input tube, the circulating pump is connected through circulating fluid pipe in the middle part of crystallizer body, this internal evaporation department that is equipped with of crystallizer, reaction portion and crystal growth portion, the top of reaction portion is located to the evaporation portion, reaction portion is equipped with the reaction inner bag, the reaction inner bag is furnished with the stirring rake, the stirring rake runs through reaction crystallizer body upper portion and extends to in the reaction inner bag, the below of reaction portion is located to crystal growth portion, crystal growth portion is equipped with the downcomer that is hourglass hopper-shaped, the downcomer is equipped with and extends the passageway and falls the liquid passageway, lower extreme one side of crystallizer body is equipped with the magma discharge gate. The utility model discloses but wide application in crystallizer technical field.

Description

Hydroxy methionine calcium neutralization crystallizer

Technical Field

The application belongs to the technical field of crystallizers, and particularly relates to a hydroxy methionine calcium neutralization crystallizer.

Background

The traditional OSLO crystallizer heats circulating feed liquid by an external heater, the circulating feed liquid enters a vacuum flash evaporation chamber to be evaporated to reach supersaturation, and then enters a suspension bed through a liquid descending pipeline to enable crystals to grow up. The evaporative crystallization mode is suitable for substances with solute solubility not changing much with temperature or occasions with supersaturation obtained by evaporating part of solvent, and the evaporative crystallization has the advantages that the supersaturation is generated at a gas-liquid interface and is not easy to form a wall. For neutralization crystallization, most processes are designed with the neutralization reaction separated from the crystallization unit, and in recent years, they have been designed together, such as the synthesis of ammonium sulfate.

The patent CN203329404U neutralization crystallizer is an improvement on the basis of the traditional DTB crystallizer design, reaction materials are concentrated at the edge of a stirring blade of a guide shell, so that the reaction is more concentrated and more efficient, but the concentration is not high enough, because the neutralization reaction of sulfuric acid and ammonia gas is faster, if the reaction is slower, the concentration effect cannot be well achieved, because the guide shell is not only a reaction concentration point but also an internal circulation channel, generally, the internal circulation flow rate in the DTB crystallizer is larger, so that the reaction is not late for the slow neutralization reaction, the reaction is circulated out of the guide shell to a peripheral growth space, the reaction and the crystallization are superposed, the control is not good after the amplification, for example, hydroxy methionine and calcium hydroxide are neutralized and reacted to generate hydroxy methionine, and the contact area with the hydroxy methionine is reduced because the calcium hydroxide is difficult to dissolve in water, and the neutralization reaction speed is reduced, in addition, secondary nucleation caused by the internal circulation of the DTB crystallizer is more, the growth of the hydroxy methionine calcium is slow, the DTB crystallizer is utilized to cause the product to grow slightly, and the neutralization crystallizer is not easy to control.

Disclosure of Invention

The utility model provides a hydroxy methionine calcium neutralization crystallizer with simple structure, low cost, strong controllability and larger crystal size, which aims to solve the defects of the prior art.

Therefore, the utility model provides a hydroxy methionine calcium neutralization crystallizer, it is equipped with the crystallizer body, the upper portion arc of crystallizer body is covered and is connected hydroxy methionine input tube, the circulating pump is connected through circulating the transfer line in the middle part of crystallizer body, this internal evaporation portion that is equipped with of crystallizer, reaction portion and crystal growth portion, the top of reaction portion is located to the evaporation portion, reaction portion is equipped with the reaction inner bag, the reaction inner bag is furnished with the stirring rake, the stirring rake runs through reaction crystallizer body upper portion and extends to in the reaction inner bag, the below of reaction portion is located to the crystal growth portion, crystal growth portion is equipped with and is the downcomer that leaks hopper-shaped, the downcomer is equipped with and extends passageway and falls the liquid passageway, lower extreme one side of crystallizer body is equipped with the magma discharge gate.

Preferably, the evaporation part is provided with a defoaming net.

Preferably, the arc-shaped cover at the upper part of the crystallizer body is provided with a vacuum air outlet which is connected with an external vacuum pump.

Preferably, the circulating liquid conveying pipe is provided with a first liquid conveying pipe and a second liquid conveying pipe, one end of the first liquid conveying pipe penetrates through the crystallizer body and extends into the reaction inner container, the other end of the first liquid conveying pipe is connected with the circulating pump, the other end of the circulating pump is connected with the second liquid conveying pipe, and the other end of the second liquid conveying pipe penetrates through the crystallizer body and extends to the outside of the downcomer.

Preferably, the reaction part is provided with a differential pressure liquid level meter which is arranged inside the crystallizer body and outside the reaction inner container.

Preferably, the bottom of the crystallizer body is provided with a drain outlet.

The utility model has the advantages that:

(1) the utility model discloses a hydroxy methionine calcium neutralization crystallizer, it is equipped with the crystallizer body, this internal evaporation portion, reaction portion and the crystal growth portion of being equipped with in proper order of crystallizer, and reaction portion is equipped with the reaction inner bag for calcium hydrate and hydroxy methionine reaction, reaction inner bag cooperation stirring rake, pH value detector and pressure differential level gauge for neutralization reaction is more concentrated high-efficiently, and reaction area of contact is big, and reaction efficiency is high, the controllability is strong. The evaporation part is positioned above the reaction part, and along with the evaporation of the solvent water, the solution in the reaction inner container reaches saturation, the calcium hydroxy methionine is separated out, and the crystallization process is controlled above the reaction part. The crystal growth part is arranged below the reaction part and is provided with a downcomer which is a channel for crystal growth, and the downcomer is provided with an extension channel and a liquid descending channel, so that the space and time for growth of the calcium hydroxy methionine crystal are further increased, and the calcium hydroxy methionine crystal with larger crystal size is ensured to be produced.

(2) The utility model discloses an among the hydroxyl methionine calcium neutralization crystallizer, the crystallizer body passes through the circulation transfer line and connects the circulating pump, can pass through circulation transfer line and circulating pump with this internal reaction liquid of crystallizer and reenter the reaction inner bag, realizes the input of calcium hydrate on the one hand, and on the other hand realizes the cyclic utilization of reaction liquid, practices thrift the cost, is applicable to industrial production.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

the symbols in the drawings illustrate that:

1. a crystallizer body; 2. a defoaming net, 3, a hydroxy methionine input pipe; 4. a first infusion tube; 5. a circulation pump; 6. a second infusion tube; 7. a downcomer; 71. an extension channel; 72. a downcomer channel; 8. discharging the crystal slurry; 9, a clean discharge port; 10. a differential pressure liquid level meter; 11. a reaction inner container; 12. a stirring paddle; 13. a vacuum air outlet; a pH value detector; 15. and a vacuum pump.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The utility model provides a hydroxy methionine calcium neutralization crystallizer, as shown in figure 1, it is equipped with crystallizer body 1, the upper portion arc of crystallizer body 1 is covered and is connected hydroxy methionine input tube 3, delivers to in the crystallizer body 1 hydroxy methionine. The middle part of the crystallizer body 1 is connected with a circulating pump 5 through a circulating liquid conveying pipe, and the calcium hydroxide solution is conveyed into the crystallizer body 1. The crystallizer body 1 is internally provided with an evaporation part, a reaction part and a crystal growth part. The evaporation part is arranged above the reaction part, and because the neutralization reaction of the calcium hydroxide and the hydroxy methionine is an exothermic reaction, the temperature rises along with the reaction, and the solvent water evaporates, so that the hydroxy methionine calcium crystal is separated out. The reaction part is provided with a reaction inner container 11 for neutralization reaction of the hydroxy methionine and the calcium hydroxide. The reaction liner 11 is provided with a stirring paddle 12, the stirring paddle 12 penetrates through the upper part of the reaction crystallizer body 1 and extends into the reaction liner 11, and the stirring paddle 12 is used for stirring a calcium hydroxide solution, increasing the contact area of the reaction of calcium hydroxide and hydroxy methionine and improving the reaction efficiency; on the other hand, with the stirring of the stirring paddle 12, an upward vortex is generated, so that the solution flows upwards, and the solution with the hydroxyl methionine calcium crystal can overflow the reaction inner container 11 more easily. The crystal growth part is arranged below the reaction part and is provided with a funnel-shaped downcomer 7 which is a channel for the growth of the hydroxyl methionine calcium crystal, and because the growth speed of the hydroxyl methionine calcium crystal is slow, the downcomer is provided with an extension channel 71 and a liquid descending channel 72, the space and time for the growth of the hydroxyl methionine calcium crystal are further increased, and the hydroxyl methionine calcium crystal with larger crystal size is ensured to be produced. One side of the lower end of the crystallizer body 1 is provided with a crystal slurry discharge port 8 for discharging hydroxyl methionine calcium crystals in the crystallizer body.

Furthermore, the evaporation part is provided with a defoaming net 2, a small amount of solid can be entrained in the evaporation process of the solvent water, and the defoaming net can play a role in solid-gas separation.

Further, the upper part of the crystallizer body 1 is also provided with a vacuum air outlet 13, and the vacuum air outlet 13 is connected with an external vacuum pump 15 and is used for discharging water vapor out of the crystallizer body 1 through the defoaming net 2 and the vacuum air outlet 13 in sequence.

In order to monitor the height of the liquid level of the reaction liner 11, the reaction part is provided with a differential pressure liquid level meter 10, the differential pressure liquid level meter 10 is arranged inside the crystallizer body 1 and outside the reaction liner 11, and the phenomenon that the liquid level in the reaction liner 11 is too high and overflows above the defoaming net 2 or too low and cannot overflow outside the reaction liner 11 is prevented. The crystallizer body is also provided with a pH value detector 14 for monitoring the pH value of the reaction liner 22 and ensuring the continuous reaction.

The circulation transfer line is equipped with first transfer line 4 and second transfer line 6, and in the one end of first transfer line 4 passed crystallizer body 1 and extended to reaction inner bag 11, the other end connected circulation pump 5, second transfer line 6 is connected to the other end of circulation pump 5, and the other end of second transfer line 6 runs through crystallizer body 1 and extends to the downcomer 7 outside, lets in reaction liquid in crystallizer body 1 once more in reaction inner bag 11 through circulation pump 5. In order to increase the solubility of calcium hydroxide in the reaction liquid, the second liquid conveying pipe 6 is provided with a branch for inputting calcium hydroxide solid and mixing with the reaction liquid, so that the input of calcium hydroxide is realized on one hand, the cyclic utilization of the reaction liquid is realized on the other hand, the cost is saved, and the device is suitable for industrial production.

Furthermore, the bottom of the crystallizer body 1 is provided with a clean discharge port 9 for discharging substances in the crystallizer body 1, so that the crystallizer is convenient to clean.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a hydroxy methionine calcium neutralization crystallizer, its is equipped with the crystallizer body, a serial communication port, the upper portion arc of crystallizer body is covered and is connected hydroxy methionine input tube, the middle part of crystallizer body is passed through the circulation transfer line and is connected the circulating pump, this internal evaporation portion, reaction portion and the crystal growth portion of being equipped with of crystallizer, the top of reaction portion is located to the evaporation portion, reaction portion is equipped with the reaction inner bag, the reaction inner bag is furnished with the stirring rake, the stirring rake runs through reaction crystallizer body upper portion and extends to in the reaction inner bag, crystal growth portion locates the below of reaction portion, crystal growth portion is equipped with and is hopper-shaped's downcomer, the downcomer is equipped with and extends passageway and falls the liquid passageway, lower extreme one side of crystallizer body is equipped with the magma discharge gate.

2. The hydroxy methionine calcium neutralization crystallizer as claimed in claim 1, wherein: the evaporation part is provided with a defoaming net.

3. The hydroxy methionine calcium neutralization crystallizer of claim 1, wherein: and the arc-shaped cover at the upper part of the crystallizer body is provided with a vacuum air outlet which is connected with an external vacuum pump.

4. The hydroxy methionine calcium neutralization crystallizer of claim 1, wherein: the circulating liquid conveying pipe is provided with a first liquid conveying pipe and a second liquid conveying pipe, one end of the first liquid conveying pipe penetrates through the crystallizer body and extends into the reaction inner container, the other end of the first liquid conveying pipe is connected with the circulating pump, the other end of the circulating pump is connected with the second liquid conveying pipe, and the other end of the second liquid conveying pipe penetrates through the crystallizer body and extends to the outside of the downcomer.

5. The hydroxy methionine calcium neutralization crystallizer of claim 1, wherein: the reaction part is provided with a differential pressure liquid level meter which is arranged inside the crystallizer body and outside the reaction inner container.

6. The hydroxy methionine calcium neutralization crystallizer of claim 1, wherein: the bottom of the crystallizer body is provided with a drain outlet.