Crystallization device for L-valine production

Abstract

The utility model discloses a crystallization device for producing L-valine, and belongs to the technical field of crystallization devices. The crystallization device for L-valine production comprises a crystallization tank, an integrally formed bottom pipe is arranged at the bottom of the crystallization tank, a circulating pump is arranged below the bottom pipe, the circulating pump is connected with the bottom pipe through a flange, and a steam exhaust port is formed in the top of the crystallization tank. In order to solve the problems that evaporated mother liquor needs to be collected in the existing process of condensing and crystallizing valine by adopting steam, but water in a stock solution is not completely evaporated in the collecting process, so that the purity of the evaporated mother liquor is reduced, a saturation tank is provided with a conical bottom, and saturated crystal mush is discharged from the conical bottom and then is separated from the saturated crystal mush. And the mother liquor enters the heat exchange coil pipe through the return pipe and the circulating port by using the axial-flow type circulating pump, is heated or cooled and then enters the crystallizing tank again, and the circulation is carried out in this way, so that the purity of the mother liquor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to crystallization device technical field, concretely is a kind of crystallization device for L-valine production. BACKGROUND

[0002] L-valine is one of branched-chain amino acids (BCAA), animal body cannot synthesize itself, and must be taken from daily ration to meet its nutritional needs, so it belongs to essential amino acid;Amino acid is the basic structural unit of protein synthesis, the predecessor of other amine required for metabolism, and is indispensable to life;

[0003] The existing valine needs to collect the mother liquor evaporated in the process of adopting steam condensation crystallization, but the moisture in the original liquid is not completely evaporated in the process of collection, so that the purity of the mother liquor evaporated is reduced. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of crystallization device for L-valine production, saturated tank is conical bottom, saturated crystal slurry is discharged from conical bottom, enters heat exchange coil in axial flow circulating pump by reflux pipe and circulation port, is heated or cooled again after being entered crystallization tank, so circulation is not, to improve the purity of mother liquor, can solve the problems in the prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of crystallization device for L-valine production, including crystallization tank, the bottom of the crystallization tank is provided with integrally-formed bottom pipe, wherein, the lower portion of the bottom pipe is provided with circulating pump, and the circulating pump is connected with the bottom pipe by flange, the top of the crystallization tank is provided with steam exhaust, the inside of the crystallization tank is provided with distribution disc, and the distribution disc is connected with the crystallization tank by support, one side of the bottom of the distribution disc is provided with slurry outlet pipe, and one end of the slurry outlet pipe extends to the outside of the crystallization tank.

[0006] Further, the bottom of the circulating pump is provided with liquid inlet, and one side of the circulating pump is provided with circulation port.

[0007] Further, one side of the bottom of the crystallization tank is provided with reflux pipe, and the reflux pipe is connected with the circulation port by flange, the inside of the bottom pipe is provided with heat exchange coil, and the heat exchange coil is connected with the bottom pipe by bolt.

[0008] Further, one side of the bottom pipe is provided with steam port, both ends of the heat exchange coil are provided with shunt ring, and the outside of the shunt ring is provided with circulating condensing port, wherein, the circulating condensing port extends to the outside of the bottom pipe.

[0009] Further, the inside of the distribution disc is provided with mother liquor tank.

[0010] Further, the bottom of the crystallization tank is provided with a saturation groove, the saturation groove and the reflux pipe are mutually penetrated, and the inner side of the saturation groove is provided with a baffle.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1、The utility model discloses a saturation groove is conical bottom, and saturation crystal pulp is discharged from the conical bottom, enters the heat exchange coil through the reflux pipe and the circulation port with the axial flow type circulating pump, is heated or cooled again and enters the crystallization tank, and the purity of mother liquor is improved through the circulation.

[0013] 2、The utility model discloses that the inside of distribution disc is provided with a mother liquor groove, and the original liquid is lifted after being heated and evaporated, and part of saturation crystal pulp is condensed and falls back to the bottom of the crystallization tank after contacting the distribution disc, and part of steam contacts the top of the tank body through the distribution disc, at this time, the mother liquor groove in the inside of the distribution disc is used to collect the part of saturation crystal pulp, and the saturation crystal pulp in the circulation period can be transported to the crystallization tank through the liquid inlet and participate in the reaction, and the high-purity mother liquor in the mother liquor groove does not need to be circulated after the period is finished. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall front view of the utility model;

[0015] Figure 2 It is the overall cross section structure schematic view of the utility model;

[0016] Figure 3 It is the distribution disc structure schematic view of the utility model;

[0017] Figure 4 It is the heat exchange coil structure schematic view of the utility model.

[0018] In the drawing: 1, crystallization tank;2, bottom pipe;3, circulating pump;101, steam exhaust;102, distribution disc;103, reflux pipe;104, saturation groove;1021, slurry outlet pipe;1022, mother liquor groove;1041, baffle;201, steam port;202, heat exchange coil;2021, shunt ring;2022, circulating condensing port;301, circulation port;302, liquid inlet. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] In order to solve the existing valine in the process of using steam condensation crystallization needs to collect the mother liquor evaporated, but in the process of collection, the moisture in the original liquid is not completely evaporated, resulting in the purity of the mother liquor evaporated is reduced; please refer to Figures 1-4 The utility model provides the following schemes:

[0021] A kind of crystallization device for L-valine production, including crystallization tank 1, the bottom of crystallization tank 1 is provided with integrally-formed bottom pipe 2, wherein, the lower portion of bottom pipe 2 is provided with circulating pump 3, circulating pump 3 is connected with bottom pipe 2 by flange, the top of crystallization tank 1 is provided with steam exhaust 101, the inside of crystallization tank 1 is provided with distribution disc 102, distribution disc 102 is connected with crystallization tank 1 by support, one side of the bottom of distribution disc 102 is provided with slurry outlet pipe 1021, one end of slurry outlet pipe 1021 extends to the outside of crystallization tank 1, the inside of distribution disc 102 is provided with mother liquor groove 1022, after original liquid is evaporated by heating, it will rise, after contacting with distribution disc 102, part of saturated crystal slurry will condense and fall back to the bottom of crystallization tank 1, part of steam is contacted with the top of tank body by distribution disc 102, at this time, the mother liquor groove 1022 in the inside of distribution disc 102 is used to collect this part of saturated crystal slurry, saturated crystal slurry in the cycle period can be retransported to crystallization tank 1 to participate in reaction by liquid inlet 302, high-purity mother liquor in mother liquor groove 1022 does not need to be recycled after the cycle ends;

[0022] The bottom of circulating pump 3 is provided with liquid inlet 302, one side of circulating pump 3 is provided with circulation port 301, one side of the bottom of crystallization tank 1 is provided with backflow pipe 103, backflow pipe 103 is connected with circulation port 301 by flange, the inside of bottom pipe 2 is provided with heat exchange coil pipe 202, heat exchange coil pipe 202 is connected with bottom pipe 2 by bolt, one side of bottom pipe 2 is provided with steam port 201, both ends of heat exchange coil pipe 202 are provided with shunt ring 2021, the outside of shunt ring 2021 is provided with circulating condensation port 2022, wherein, circulating condensation port 2022 extends to the outside of bottom pipe 2, the bottom of crystallization tank 1 is provided with saturation groove 104, saturation groove 104 and backflow pipe 103 are mutually penetrated, the inside of saturation groove 104 is provided with baffle 1041, saturation groove 104 is conical bottom, after saturated crystal slurry is discharged from conical bottom, it enters heat exchange coil pipe 202 by backflow pipe 103 and circulation port 301 with axial flow circulating pump 3, after being heated or cooled, it reenters crystallization tank 1, so circulate, so as to improve the purity of mother liquor.

[0023] Working principle, the inside of distribution disc 102 is provided with mother liquor groove 1022, the original solution after heating and evaporation will rise, after contacting with distribution disc 102, part of saturated crystal slurry will condense and fall back to the bottom of crystallization tank 1, saturated groove 104 is conical bottom, after saturated crystal slurry is discharged from the conical bottom, enters heat exchange coil pipe 202 by reflux pipe 103 and circulation port 301 with axial flow circulating pump 3, is heated or cooled and then enters crystallization tank 1 again, so circulates, part of steam is contacted with the top of tank body through distribution disc 102, at this time, the mother liquor groove 1022 in the inside of distribution disc 102 is used to collect this part of saturated crystal slurry, the saturated crystal slurry in the circulation period can be transported to crystallization tank 1 again through liquid inlet 302 and participate in the reaction, after the period ends, the high-purity mother liquor in mother liquor groove 1022 does not need to be circulated again.

[0024] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A crystallization apparatus for L-valine production, characterized in that, The application relates to a crystallization tank (1) which is provided with an integrally-formed bottom pipe (2) at the bottom of the crystallization tank (1), wherein a circulating pump (3) is arranged below the bottom pipe (2) and is connected with the bottom pipe (2) through flanges; a steam discharge port (101) is arranged at the top of the crystallization tank (1); a distribution disc (102) is arranged in the crystallization tank (1) and is connected with the crystallization tank (1) through a support; a slurry outlet pipe (1021) is arranged at one side of the bottom of the distribution disc (102) and extends to the outside of the crystallization tank (1); a backflow pipe (103) is arranged at one side of the bottom of the crystallization tank (1); a saturation tank (104) is arranged at the bottom of the crystallization tank (1) and is tapered; and the saturation tank (104) and the backflow pipe (103) are mutually penetrated.

2. The crystallization apparatus for producing L-valine according to claim 1, characterized by: The bottom of the circulating pump (3) is provided with a liquid inlet (302), and one side of the circulating pump (3) is provided with a circulating port (301).

3. The crystallization apparatus for producing L-valine according to claim 1, characterized by: The backflow pipe (103) is connected with the circulating port (301) through flanges, and the inside of the bottom pipe (2) is provided with a heat exchange coil (202) which is connected with the bottom pipe (2) through bolts.

4. The crystallization apparatus for producing L-valine according to claim 3, characterized by: One side of the bottom pipe (2) is provided with a steam port (201), and both ends of the heat exchange coil (202) are provided with shunt ring hoops (2021) which are provided with circulating condensing ports (2022) at the outside thereof, wherein the circulating condensing ports (2022) extend to the outside of the bottom pipe (2).

5. The crystallization apparatus for producing L-valine according to claim 1, characterized by: The inside of the distribution disc (102) is provided with a mother liquor tank (1022).

6. The crystallization apparatus for producing L-valine according to claim 1, characterized by: The inside of the saturation tank (104) is provided with a baffle (1041).

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