CN2678736Y

CN2678736Y - Top thrusting and down elevating mixed decomposing crystallizer

Info

Publication number: CN2678736Y
Application number: CN 200420008006
Authority: CN
Inventors: 唐中凡; 谭昌晶; 袁雪冬
Original assignee: XINJIANG LOP NUR POTASSIUM SAL
Current assignee: SDIC Xinjiang Luobupo Potash Co., Ltd.
Priority date: 2004-03-04
Filing date: 2004-03-04
Publication date: 2005-02-16
Anticipated expiration: 2014-03-04

Abstract

Disclosed is a mixed decomposition type crystallizer which produces large granule inorganic salt product via double decomposition reaction. The utility model is suitable for the condition that the surface of the reaction mass is attached with surface active agent in the crystallizer. The crystallizer is provided with a center cylinder whose upper mouth is in the shape of a horn and a guide shell whose lower mouth is in the shape of a horn. The lower edge of the center cylinder and the lower edge of the horn shaped mouth of the guide shell are positioned on the same horizontal plane in the middle of the tank of the crystallizer, and the upper edge of the guide shell is slightly lower than an overflowing edge. The high-speed rotation with the same direction of a two-stage impeller with downward acting force arranged on an upper center stirring shaft and an impeller with upward acting force arranged on a bottom center stirring shaft can eliminate the crystal on the upper part of the crystallizer to make the upper layer and the lower layer reaction mass in the crystallizer mixed sufficiently and realize the internal and external circulation of fluid in the center cylinder. The lower part of the center cylinder of the crystallizer is provided with a coil pipe whose upper part is provided with a small hole, and water ejected from the small hole can make the reaction mass form reaction concentration gradient. The reaction mass carries out speed controlling reaction to achieve the purpose of producing large granule inorganic salt product and improving the yielding of the product.

Description

Top thrusting and down elevating type mixed decomposing crystallizer

The utility model relates to a kind of top thrusting and down elevating type mixed decomposing crystallizer.

In the prior art, Chinese patent CN-2485020Y discloses a kind of salt chemical engineering reactor.Its technology contents is as follows: it is provided with the tank body of a band bearing, middle part in tank body, be provided with the guide shell of a up/down perforation, agitating device is equipped with in the guide shell bottom, and the guide shell top is provided with dog-house, the periphery of the middle and upper part guide shell in tank body, the flow isolating cylinder of up/down perforation is housed, is provided with the overflow launder of annular on the top of tank body, the overfall upper edge of overflow launder is lower than the flow isolating cylinder upper edge, the bottom of overflow launder is provided with overfall, and the bottom of tank body is provided with leads to a jar outer discharging opening.The weak point of this device is that this reactor is not suitable for reaction mass granularity and the discrepant situation of proportion, and the guide shell entire length is oversize, causes the distance of forced circulation long, makes material layering, mixes inhomogeneously, causes reaction effect not good.

The purpose of this utility model is to provide a kind of mixed decomposing crystallizer of producing the bulky grain inorganic salt product by metathesis reaction at the deficiencies in the prior art.

Compared with prior art, the utility model is realized by following technical scheme at the characteristics of reaction mass surface attachment surfactant in the crystallizer.The utility model is a kind of mixed decomposing crystallizer, be characterized in crystallizer, being provided with one suitable for reading for trumpet type central tube and end opening be the guide shell of trumpet type, central tube horn mouth upper edge is a little less than the guide shell upper edge, central tube lower edge and guide shell horn mouth lower edge are positioned at the same horizontal plane at about 1/2 place of crystallizer tank body, the upper edge of guide shell is lower than the overflow edge, the two-stage of material by being provided with on the central upper portion shaft in the crystallizer, the impeller that active force is downward, material in the crystallizer is produced a kind of powerful downward thrust, make the central tube upper end produce the suction that resembles the centrifugal pump inlet, the lower end of central tube produces the thrust that resembles the centrifugal pump outlet, suction suitable for reading sucks central tube with the foam and the material on slurry layer top in the crystallizer, is dished out by the lower end of central tube; The impeller that the active force that is provided with on the crystallizer bottom centre shaft makes progress rotates at a high speed, the material that the unreacted material stirs afterwards and get off in crystallizer top of crystallizer inner bottom part is converged, crystallizer levels material is fully mixed in reaction zone, and realize the interior outer circulation of fluid at central tube; Crystallizer inner draft tube outer setting baffle device, its structure is a cavity, both can play the reinforcement supporting role to guide shell, can play the current stabilization effect to the crystallizer inner fluid again, makes oarse-grained material sedimentation, thin crystalline substance floats up the back and is sucked by the fluid of central tube; The bronze pan tube that top is drilled with aperture is equipped with in center between crystallizer central tube bottom and bottom agitating device, the water of ejection is in reaction zone and two bursts of mixing of materials up and down in the aperture, and make the crystallizer inner bottom part in the fluid of top, form concentration gradient, control the speed reaction, make material varies in size in the crystallizer particle because gravity effect classification, by thin chap, reached and produced the bulky grain inorganic salt product from top to bottom, improved the purpose of product yield.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a sectional structure schematic diagram of the present utility model.

In Fig. 1, the top thrusting and down elevating type mixed type decomposition and crystallization device of present embodiment, be provided with in the crystallizer one suitable for reading for trumpet type central tube (18) and an end opening be flaring guide shell (2), its end opening position and central tube end opening position are at same horizontal plane, and guide shell (2) upper edge is lower than overflow along (3); Central upper portion shaft (15) is housed in the central tube, two-stage, the downward impeller (5) of active force are housed on the shaft, lower central shaft (9) is equipped with in the crystallizer bottom, the single-stage impeller (8) that active force makes progress is housed on the shaft, top is stirred power set (1) and is contained in crystallizer top, bottom power set (10) are contained in the crystallizer bottom, and its mixing direction is equidirectional; The coil pipe (13) that aperture is bored on top is housed between crystallizer central tube (18) and the lower central shaft (9), and fresh water provides by being arranged on the outer pipeline (14) of crystallizer jar; Between crystallizer inner draft tube (2) and the crystallizer tank body (16) baffle device (4) is set; Be provided with overflow launder (3) and overfall (17) on crystallizer top, crystallizer tank body (16) upper edge is a little more than the upper edge of guide shell (2), crystallizer tank body following side is provided with and leads to a jar outer discharging opening (12), and tank base is provided with discharging hole (11), and discharge is used during for maintenance; Central tube (18) adopts the version of bracing frame (6) to fix, support; The crystallizer following side is provided with manhole (7), conveniently carries out overhaul of the equipments.

Claims

1, a kind of top thrusting and down elevating type is produced the mixed decomposing crystallizer of bulky grain inorganic salt product by metathesis reaction, it is characterized in that: be provided with in the crystallizer one suitable for reading for trumpet type central tube (18) and an end opening be flaring guide shell (2), material is provided with the make progress high speed of impeller (8) of active force and rotates by being provided with on the central upper portion shaft (15) on the downward impeller (5) of two-stage, active force and the bottom centre's shaft (9) in the crystallizer, crystallizer levels material is fully mixed in reaction zone, and realize the interior outer circulation of fluid at central tube.

2, mixed decomposing crystallizer according to claim 1, it is characterized in that: this crystallizer central tube (18) is suitable for reading to be trumpet type, its position of upper is a little less than guide shell, guide shell (2) end opening is a trumpet type, its end opening position and central tube end opening position are positioned at the same horizontal plane at about 1/2 place of crystallizer tank body height, and guide shell (2) upper edge is a little less than overflow edge (3).

3, mixed decomposing crystallizer according to claim 1, it is characterized in that: be provided with two cover agitating devices in this crystallizer simultaneously, be respectively top agitating device (1) (15) and bottom agitating device (9) (10), it is carefully brilliant to eliminate crystallizer top, two kinds of different mediums are fully reacted at reaction zone, thereby improved product yield.

4, mixed decomposing crystallizer according to claim 1, it is characterized in that: the coil pipe (13) that bores aperture is housed between crystallizer central tube (18) and the lower central shaft (9), in the fluid at top, form concentration gradient in the crystallizer bottom from the fresh water that sprays in the aperture, control fast decomposition and crystallization with the material that is flowed into by the crystallizer bottom material that stirred and top at reaction zone, material particles in the crystallizer owing to be subjected to gravity effect classification from top to bottom by thin chap.

5, mixed decomposing crystallizer according to claim 1, it is characterized in that: crystallizer inner draft tube (2) outer setting baffle device (4), it is a cavity structure, both can play the reinforcement supporting role, can play current stabilization and the effect that makes the particle separation that varies in size to the crystallizer inner fluid again guide shell.