CN112827439A - Ethylene diamine recycling pretreatment device and pretreatment recycling method - Google Patents

Ethylene diamine recycling pretreatment device and pretreatment recycling method Download PDF

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Publication number
CN112827439A
CN112827439A CN202110101730.0A CN202110101730A CN112827439A CN 112827439 A CN112827439 A CN 112827439A CN 202110101730 A CN202110101730 A CN 202110101730A CN 112827439 A CN112827439 A CN 112827439A
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cover
pipe
liquid
adjusting
nozzle
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林森
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Yancheng Renheng Chemical Co ltd
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Yancheng Renheng Chemical Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
    • C07C209/14—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups
    • C07C209/16—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/002—Nozzle-type elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

The invention discloses a liquid ethylenediamine recovery pretreatment device and a pretreatment recovery method thereof, wherein the upper end of a mixing reaction box is provided with a lead-in device, the lead-in device comprises a liquid storage box body, the liquid storage box body is communicated with a first lead-in pipe, the middle section of the first lead-in pipe is connected with a pump body, the other end of the lead-in pipe is connected with an atomizing cover, a plurality of groups of micro turbine blades are arranged in the lead-in pipe, a fluid channel is arranged in the atomizing cover, micro hydraulic shunts are arranged at the inlets of the fluid channel, the lower end of the atomizing cover is provided with an adjusting assembly, the adjusting assembly comprises a sealing cover, the sealing cover is fixed at the lower part of the atomizing cover, the lower end of the sealing cover is connected with an adjusting cover through a connecting column, the adjusting cover can rotate around the connecting column, the sealing cover and the adjusting cover are provided with mutually corresponding through holes, so, simultaneously, the problems that the nozzle is easy to block and particles are removed are solved.

Description

Ethylene diamine recycling pretreatment device and pretreatment recycling method
Technical Field
The invention relates to the technical field of ethylenediamine recovery, in particular to an ethylenediamine recovery pretreatment device and a pretreatment recovery method.
Background
Ethylenediamine, colorless or yellowish oily or watery liquid, has an odor similar to ammonia. Is strongly alkaline. Is flammable. Low toxicity and corrosiveness. Ethylenediamine is an important chemical raw material, and is widely used for manufacturing organic compounds, high molecular compounds, medicines and the like, and is used for producing pesticide bactericides (zineb, amobam), insecticides, herbicides, dyes, dye fixing agents, synthetic emulsifiers, demulsifiers, fiber surfactants, water quality stabilizers, descaling agents, plating brighteners, paper wetting enhancers, adhesives, metal chelating agents EDTA, epoxy resin curing agents, rubber vulcanization accelerators, acid gas purifiers, photographic development additives, stabilizers for ultrahigh pressure lubricating oil, welding fluxes, amino resins, ethylenediamine urea-formaldehyde resins and the like. Also can be used for organic solvent and chemical analysis reagent, and for the identification of beryllium, cerium, lanthanum, magnesium, nickel, thorium, uranium and other metals, and the determination of antimony, bismuth, cadmium, cobalt, copper, mercury, nickel, silver and uranium.
The prior art discloses an Ethylenediamine (EDA) wastewater recovery process with application number CN201410573610.0, which mainly solves the problems of low EDA recovery rate and high amine-containing wastewater treatment cost in the prior art. The invention relates to a technical scheme for effectively recovering EDA and entrainer in waste water and reducing waste water treatment cost, which solves the problem well and can be used in the process production of EDA.
Before the process is treated, liquid ammonia and MEA are heated and gasified to react, and the full reaction of the liquid ammonia and the MEA is the key for recycling the whole liquid ethylenediamine, so that the full reaction of the liquid ammonia and the MEA is very important. In addition, in order to make the mixture fully mixed, the nozzles in the prior art are modified to be rotatable, but the nozzles of some existing equipment needing treatment are easy to block, and a pretreatment device for recovering the liquid ethylenediamine and a pretreatment recovery method thereof are designed aiming at the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a liquid ethylenediamine recycling pretreatment device and a pretreatment recycling method thereof, which can realize the full mixing reaction of liquid ammonia and MEA (membrane electrode assembly), further provide basic guarantee for the recycling of liquid ethylenediamine, and simultaneously solve the problems of easy nozzle blockage, particle removal and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a liquid ethylenediamine recovery processing device which comprises a mixing reaction box and recovery processing equipment, wherein the upper end of the mixing reaction box is provided with a lead-in device, the lead-in device comprises a liquid storage box body, the liquid storage box body is communicated with a first lead-in pipe, the middle section of the first lead-in pipe is connected with a pump body, the other end of the lead-in pipe is connected with an atomization cover, a plurality of groups of micro turbine blades are arranged in the lead-in pipe, a fluid channel is arranged in the atomization cover, micro hydraulic shunts are arranged at inlets of the fluid channel, the lower end of the atomization cover is provided with an adjusting assembly, the adjusting assembly comprises a sealing cover, the sealing cover is fixed at the lower part of the atomization cover, the lower end of the sealing cover is connected with an adjusting cover through a connecting column, the adjusting cover.
Preferably, be equipped with filter unit in the liquid reserve tank, filter unit passes through the fixed setting of the support ring body of liquid reserve tank inner wall, filter unit is including crossing the filter frame, and swing joint has the regulating plate in the filter frame, and regulating plate upper portion is equipped with the regulation pole, can realize the rotation of regulating plate through adjusting the pole, and the upper portion of adjusting the pole extends to liquid reserve tank upper portion, all is equipped with the filtration pore at the bottom of regulating plate and the filter frame.
In any of the above schemes, preferably, the adjusting plate and the filtering holes at the bottom of the filtering frame correspond to each other, and the filtering holes are at least one of triangular, circular, square and polygonal.
In any of the above schemes, preferably, the atomization hood is a conical hood body, the caliber of the conical hood body is gradually increased from top to bottom, a plurality of fluid channels are arranged in the atomization hood, the plurality of fluid channels are arranged in a radial shape, and a micro-hydraulic flow divider is arranged at the inlet of each fluid channel.
Preferably in any one of the above schemes, the bottom of the mixing reaction box is provided with a funnel cover, the funnel cover is connected with a recovery processing device through a conveying pipe, the recovery processing device is provided with a recovery pipe, and the recovery pipe is provided with an electromagnetic valve.
Preferably in any one of the above schemes, the inner wall of the funnel cover is fixedly connected with a screen plate, the screen plate is fixedly connected with a coil pipe, and the upper end of the coil pipe is provided with an adjustable spray head.
In any of the above schemes, preferably, the adjustable nozzle is composed of a nozzle and a nozzle, the nozzle is composed of a rotary ball, a reducing connection pipe and a blocking nozzle, and the rotary ball is movably connected between the reducing connection pipe and the nozzle.
In any of the above schemes, preferably, the end of the plugging nozzle is closed, a plurality of spray holes are arranged around the plugging nozzle, and the inner diameter of each spray hole is gradually increased from inside to outside.
The invention also provides a pretreatment recovery method of the liquid ethylenediamine recovery pretreatment device, which comprises the following steps:
step (1): firstly, connecting a liquid storage tank body with a first lead-in pipe, and connecting a second lead-in pipe with an MEA pipe;
step (2): then starting a pump body, feeding liquid ammonia into the first inlet pipe when the pump body works, cutting the liquid ammonia by a plurality of groups of micro turbine blades, atomizing the liquid ammonia, feeding the liquid ammonia into an atomizing cover, and shunting the liquid ammonia by a micro hydraulic flow divider and then feeding the liquid ammonia into a fluid channel;
and (3): the lower end of the atomization cover is provided with an adjusting assembly, the flow of the liquid ammonia formed after atomization is adjusted by rotating an adjusting cover of the adjusting assembly, and the liquid ammonia is finally sprayed into the mixing reaction box through the seal cover and the circulation holes on the adjusting cover;
and (4): the MEA steam is conveyed to the coil pipe through the second inlet pipe and the coil pipe and is sprayed out through the adjustable spray head;
and (5): and mixing and reacting the liquid ammonia atomized liquid and MEA steam to realize the pretreatment of liquid ethylenediamine recovery.
Preferably, the pump body is connected with first induction pipe interlude in step (1), and the other end and the atomizing cover of first induction pipe are connected, be equipped with the little turbine blade of multiunit in the first induction pipe, be equipped with fluid passage in the atomizing cover, the fluid passage entrance all is equipped with little hydraulic pressure shunt.
Preferably in any of the above schemes, the lower end of the atomizing cover in the step (2) is provided with an adjusting component, the adjusting component comprises a sealing cover, the sealing cover is fixed on the lower part of the atomizing cover, the lower end of the sealing cover is connected with an adjusting cover through a connecting column, the adjusting cover can rotate around the connecting column, and the sealing cover and the adjusting cover are provided with circulation holes corresponding to each other.
Preferred in any above-mentioned scheme, the internal filter element that is equipped with of liquid storage tank in step (1), the filter element passes through the fixed setting of the supporting ring body of liquid storage tank inner wall, filter element is including crossing the filter frame, and swing joint has the regulating plate in the filter frame, and regulating plate upper portion is equipped with the regulation pole, can realize the rotation of regulating plate through adjusting the pole, and the upper portion of adjusting the pole extends to liquid storage tank upper portion, and the regulating plate all is equipped with the filtration pore with crossing the filter frame end.
In any of the above schemes, preferably, the adjusting plate and the filtering holes at the bottom of the filtering frame correspond to each other, and the filtering holes are at least one of triangular, circular, square and polygonal.
In any of the above schemes, preferably, the atomizing cover in step (2) is a conical cover body, the aperture of the conical cover body gradually increases from top to bottom, a plurality of fluid channels are arranged in the atomizing cover, the plurality of fluid channels are arranged in a radial shape, and a micro-hydraulic flow divider is arranged at the inlet of each fluid channel.
Preferably in any of the above schemes, the bottom of the mixing reaction box in step (3) is provided with a funnel cover, the funnel cover is connected with a recovery processing device through a conveying pipe, the recovery processing device is provided with a recovery pipe, and the recovery pipe is provided with an electromagnetic valve.
Preferably in any one of the above schemes, the inner wall of the funnel cover is fixedly connected with a screen plate, the screen plate is fixedly connected with a coil pipe, and the upper end of the coil pipe is provided with an adjustable spray head.
In any of the above schemes, preferably, the adjustable nozzle is composed of a nozzle and a nozzle, the nozzle is composed of a rotary ball, a reducing connection pipe and a blocking nozzle, and the rotary ball is movably connected between the reducing connection pipe and the nozzle.
In any of the above schemes, preferably, the end of the plugging nozzle is closed, a plurality of spray holes are arranged around the plugging nozzle, and the inner diameter of each spray hole is gradually increased from inside to outside.
Compared with the prior art, the invention has the beneficial effects that:
(1) liquid ammonia is fed into a first inlet pipe by the pump body, the liquid ammonia is cut by a plurality of groups of micro turbine blades in the first inlet pipe and then is atomized into thousands of small molecules, and then the small molecules enter an atomizing cover and are sprayed out from a fluid channel after being divided by a micro hydraulic flow divider;
(2) simultaneously, the atomizing cover lower extreme is equipped with the adjustment subassembly, and the regulation of circulation hole matching degree is realized in the regulation lid rotation through rotatory adjustment subassembly to indirect realization is adjusted the thing liquid flow size that forms after the liquid ammonia atomizing, and the thing liquid is finally spouted into in the mixed reaction incasement through the circulation hole that closing cap and regulation were covered, so can realize the regulation to atomizing liquid flow size as required, makes more abundant of reaction.
(3) Through adjustable shower nozzle structural design, the nozzle end seals, and the eye that spouts is the circumference and encircles the setting in end closed end outer lane, has increased injection speed promptly, has still solved the easy deposition's of traditional nozzle problem simultaneously. The caliber of the reducing connecting pipe is gradually reduced, and the speed is increased again.
In conclusion, the invention has reasonable structure, can realize the full reaction of liquid ammonia and MEA, and further can provide basic guarantee for the recovery of liquid ethylenediamine.
Drawings
FIG. 1 is a schematic structural diagram of a liquid ethylenediamine recycling pretreatment apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of an atomizing hood in a liquid ethylenediamine recycling pretreatment apparatus according to the present invention;
FIG. 3 is a schematic view of a coil pipe structure in a liquid ethylenediamine recycling pretreatment apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of a filter element in a liquid ethylenediamine recycling pretreatment apparatus according to the present invention;
FIG. 5 is a schematic structural view of an adjustable nozzle in a liquid ethylenediamine recycling pretreatment apparatus according to the present invention;
FIG. 6 is a longitudinal cross-sectional view of FIG. 5;
fig. 7 is a structural sectional view at the position of a blocking mouth of fig. 5.
In the figure: the device comprises a mixing reaction box 1, a recovery processing device 2, an introduction device 3, a liquid storage box 31, a first introduction pipe 32, an atomization cover 33, a fluid channel 331, a micro turbine blade 34, a micro hydraulic flow divider 35, an adjusting component 36, a closed cover 361, a connecting column 362, a flow hole 363, an adjusting cover 364, a pump body 4, a filter component 5, a filter frame 51, an adjusting plate 52, an adjusting rod 53, a filter hole 54, a funnel cover 6, a delivery pipe 7, a recovery pipe 9, a screen plate 10, a coil pipe 11, an adjustable spray head 12, a spray pipe 13, a spray nozzle 14, a rotating ball 141, a reducing connecting pipe 142, a blocking nozzle 143, a spray hole 144 and a support ring body 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1-7, a liquid ethylenediamine recovery processing device comprises a mixing reaction tank 1 and a recovery processing device 2, wherein an introducing device 3 is arranged at the upper end of the mixing reaction tank 1, the introducing device 3 is used for introducing waste liquid, specifically, the introducing device 3 comprises a liquid storage tank 31, the liquid storage tank 31 is communicated with a first introducing pipe 32, a pump body 4 is connected to the middle section of the first introducing pipe 32, and the pump body 4 is used for pumping out the waste liquid.
The other end and the atomizing cover 33 of first induction pipe 32 are connected, be equipped with multiunit microturbine blade 34 in the first induction pipe 32 to be the atomizing liquid after the waste liquid that will get into in the first induction pipe 32 cuts, in order to guarantee the atomizing effect, the liquid velocity of flow in the first induction pipe 32 can not be too big. In addition, a plurality of fluid channels 331 are arranged in the atomizing cover 33, and the inlets of the fluid channels 331 are respectively provided with a micro-hydraulic flow divider 35, so that the atomized liquid can rapidly enter the plurality of fluid channels 331.
The lower extreme of atomizing cover 33 is equipped with adjustment assembly 36, and adjustment assembly 36 is used for adjusting the velocity of flow of atomizing liquid, and is specific, adjustment assembly 36 includes closing cap 361, and closing cap 361 fixes in atomizing cover 33 lower part, and closing cap 361 lower extreme passes through spliced pole 362 and adjusts lid 362 and connects, and it can rotate around spliced pole 362 to adjust lid 362, be equipped with mutual corresponding opening 363 on closing cap 361 and the regulation lid 362, through rotatory regulation lid 362, adjust closing cap 361 and the upper and lower degree of matching of opening 363 on the regulation lid 362, indirectly realize the regulation of atomizing liquid outflow speed.
The further optimized technical scheme of this embodiment is that, be equipped with filter part 5 in the liquid storage tank 31, filter part 5 is used for carrying out the prefiltering to the particulate matter in the waste liquid. Concretely, filter unit 5 passes through the fixed setting of the support ring body 15 of liquid storage tank 31 inner wall, filter unit 5 includes filter frame 51, swing joint has regulating plate 52 in the filter frame 51, regulating plate 52 upper portion is equipped with the filter layer and adjusts pole 53, it passes the filter layer to adjust pole 53, can realize the rotation of regulating plate 52 through adjusting pole 53, the upper portion of adjusting pole 53 extends to liquid storage tank 31 upper portion, thereby conveniently through grabbing regulation pole 53 regulation by hand, regulating plate 52 and filter frame 51 all are equipped with at the bottom of the frame and filter hole 54, through rotatory regulation pole 53, realize regulating plate 52 and filter frame 51 frame end and filter the regulation of hole 54 matching degree, thereby indirectly realize the regulation of waste liquid filter speed. When needing to be changed or clear up in filtering frame 51, directly can realize adjusting plate 52 and the whole of upper portion particulate matter taking out through hand-pulling regulation pole 53, because filtering frame 51 upper portion is equipped with the retaining ring, filter frame 51 promptly for unsettled setting, when the particulate matter is more, can directly clear up or change the filter layer through taking out filtering frame 51.
The further optimized technical solution of this embodiment is that the adjusting plate 52 and the filtering holes 54 at the bottom of the filtering frame 51 correspond to each other, and the filtering holes 54 are at least one of triangular, circular, square and polygonal.
The further optimized technical scheme of this embodiment is that the atomizing cover 33 is a conical cover body, the aperture of the conical cover body gradually increases from top to bottom, a plurality of fluid passages 331 are arranged in the atomizing cover 33, the plurality of fluid passages 331 are arranged in a radial shape and are gradually scattered from top to bottom, and thus the maximization of the spraying area of the atomized liquid is realized. The inlet of each fluid channel 331 is provided with a micro-hydraulic flow divider 35 to ensure that the atomized liquid is uniformly sprayed out from each different fluid channel 331.
The further optimized technical scheme of this embodiment is that hopper cover 6 is installed to the bottom of mixed reaction box 1, hopper cover 6 is connected with recovery processing equipment 8 through conveyer pipe 7, install recovery tube 9 on the recovery processing equipment 8, install solenoid valve on the recovery tube 9.
The further optimized technical scheme of this embodiment is that the inner wall of the funnel cover 6 is fixedly connected with a screen plate 10, the screen plate 10 is fixedly connected with a coil pipe 11, and the upper end of the coil pipe 11 is provided with an adjustable spray head 12.
The further optimized technical scheme of the embodiment is that the adjustable spray head 12 is composed of a spray pipe 13 and a spray nozzle 14, the spray nozzle 14 is composed of a rotating ball 141, a reducing connecting pipe 142 and a blocking nozzle 143, and the rotating ball 141 is movably connected between the reducing connecting pipe 142 and the spray pipe 13.
The further optimized technical scheme of this embodiment is that the end of the blocking nozzle 143 is closed, so that the steam can be accelerated and sprayed out from the surrounding spray holes 144, a plurality of spray holes 144 are arranged around the blocking nozzle 143, and the inner diameter of the spray holes 144 is gradually increased from inside to outside, thereby realizing the re-acceleration.
Example 2
A pretreatment recovery method using the liquid ethylenediamine recovery pretreatment device of example 1, comprising the steps of:
step (1): firstly, connecting a liquid storage box body 31 with a first lead-in pipe 32, and connecting a second lead-in pipe 15 with an MEA pipe;
step (2): then starting the pump body 4, feeding liquid ammonia into the first inlet pipe 32 when the pump body 4 works, cutting the liquid ammonia by a plurality of groups of microturbine blades 34, atomizing the liquid ammonia, feeding the atomized liquid ammonia into the atomizing hood 33, and shunting the atomized liquid ammonia by the micro hydraulic flow divider 35 to enter the fluid channel 331;
and (3): the lower end of the atomization hood 33 is provided with an adjusting component 36, the flow of the liquid ammonia formed after atomization is adjusted by rotating an adjusting cover 362 of the adjusting component 36, and the liquid ammonia is finally sprayed into the mixing reaction box through a closed cover 361 and a flow hole 363 on the adjusting cover 362;
and (4): the MEA steam is conveyed to the coil pipe 11 through a second leading-in pipe 15 and is sprayed out through an adjustable spray head 12, and a plurality of groups of micro turbine blades 34 can be arranged in the second leading-in pipe 15 at the same time;
and (5): and mixing and reacting the liquid ammonia atomized liquid with the MEA to realize the pretreatment of recovering the liquid ethylenediamine.
The specific pretreatment process of the invention is as follows:
(1) the pump body 4 feeds liquid ammonia into the first inlet pipe 32 when working, the liquid ammonia is cut by a plurality of groups of microturbine blades 34 in the first inlet pipe 32, atomized into thousands of small molecules, and then enters the atomizing cover 33, and is shunted by the micro hydraulic flow divider 35 and then ejected into the fluid channel 331, and as the fluid channel 331 is radially arranged, the ejection area can be increased, the atomized liquid ammonia can be ejected uniformly, so that the mixing uniformity of the liquid ammonia atomized liquid and the MEA is increased, and the liquid ammonia atomized liquid and the MEA are reacted fully;
(2) meanwhile, the lower end of the atomizing cover 33 is provided with the adjusting assembly 36, the adjusting cover 364 rotating through the adjusting assembly 36 realizes the adjustment of the matching degree of the circulation hole 363, so that the adjustment of the flow rate of the liquid ammonia formed after atomization is indirectly realized, and the liquid ammonia is finally sprayed into the mixing reaction box through the closed cover 361 and the circulation hole 363 on the adjusting cover 364, so that the adjustment of the flow rate of the atomized liquid can be realized as required, and the reaction is more sufficient.
(3) Through the structural design of the adjustable spray head 12, the tail end of the spray nozzle 14 is closed, and the spray holes 144 are circumferentially arranged on the outer ring of the tail end closed end in a surrounding manner, so that the spray speed is increased, and meanwhile, the problem that the traditional spray nozzle is easy to deposit dust is solved. The diameter of the reducing connection pipe 142 is set to be gradually reduced, thereby increasing the speed again.
Example 3
A liquid ethylenediamine recovery pretreatment apparatus was similar to example 1, except that,
a plurality of adjustable nozzles 12 are arranged around the coil 11, as shown in fig. 5-7, each adjustable nozzle 12 is composed of a nozzle 13 and a nozzle 14, each nozzle 14 is composed of a rotating ball 141, a reducing connecting pipe 142 and a blocking nozzle 143, the rotating ball 141 is movably connected between the reducing connecting pipe 142 and the nozzle 13, the end of the blocking nozzle 143 is closed, a plurality of spray holes 144 are arranged around the blocking nozzle 143, and the inner diameter of each spray hole 144 gradually increases from inside to outside. Under the effect of the rotary ball 141, the reducing connecting pipe 142 can drive the nozzle, so that the adjustable angle along the axial direction of the nozzle is 0-60 degrees, the adjustable angle along the circumferential direction of the nozzle is 0-360 degrees, the end of the nozzle is sealed through the structural design of the adjustable nozzle, and the nozzle eye is circumferentially arranged on the outer ring of the closed end of the end, so that the injection speed is increased, and meanwhile, the problem of easy dust deposition of the traditional nozzle is solved. The caliber of the reducing connecting pipe is gradually reduced, and the increase of the injection speed is realized.
Under the action of the rotating ball 141, the reducing connecting pipe 142 can drive the nozzle to rotate and incline towards the outer sides of the left side and the right side, so that the adjustable angle along the axial direction of the sprayer is 0-60 degrees, and the adjustable angle along the circumferential direction of the sprayer is 0-360 degrees. Specifically, the rotation is realized through the rotating ball, so that the adjustable angle of the annular nozzle is 0-360 degrees. The rotary nozzle can be expanded towards the left side and the right side, and further the angle adjustable along the axial direction of the spray head is 0-60 degrees.
Example 4
A liquid ethylenediamine recovery pretreatment apparatus was similar to example 1, except that,
the rotary ball 141 is of a spherical shell structure, the reducing connection pipe 142 connects the rotary ball 141 and the nozzle 14, and the outer diameter of the reducing connection pipe gradually decreases from one end close to the rotary ball 141 to the other end, so that the rotary ball 141 has a function of locally accelerating flow.
Example 5
A liquid ethylenediamine recovery pretreatment apparatus was similar to example 1, except that,
the nozzle 14 is a hemispherical shell structure, and a plurality of spray holes 144 are arranged at equal intervals along the circumferential direction at one end of the nozzle 14 close to the reducing connection pipe 142. The rotation direction of the spray head 12 is adjusted in real time through the DCS system, and the intelligent control mechanism acquires data information such as liquid ammonia and MEA steam concentration in real time. The command arithmetic unit capable of adjusting the rotation direction of the spray head 14 is a PLC controller. How to arrange the sensors and the DCS system is common knowledge in the art, and will not be described herein.
Example 6
A liquid ethylenediamine recycling pretreatment device is similar to that in embodiment 1, except that, as shown in FIG. 7, the inner diameter of the nozzle 144 is gradually increased from inside to outside to achieve a local acceleration effect, so that the speed at the outlet of the nozzle 144 is further increased to prevent blockage, and in addition, the number of the nozzle 144 is 8 and the nozzles are arranged in a surrounding manner at equal intervals.
Example 7
A liquid ethylenediamine recycling pretreatment apparatus is similar to that of example 1 except that a plurality of spray holes 144 are circumferentially arranged on the same plane.
Example 8
A pretreatment apparatus for recovering liquid ethylenediamine, similar to example 1, except that a plurality of spray holes 144 are circumferentially provided on different planes, thereby further enlarging the spray path and ensuring more sufficient mixing.
Example 9
A liquid ethylenediamine recycling pretreatment apparatus is similar to that of example 1 except that a plurality of spray holes 144 are different in shape, and the spray holes 144 are at least one of triangular, circular and polygonal.
This application adopts adjustable shower nozzle 12 increase to spray the radius, is carried to rise by original sharp injection and is the injection of face, and the mixed effect is better. Rotating ball 141 forms the throat with reducing connecting pipe 142 coupling part in adjustable shower nozzle 13, liquid obtains once accelerating in throat department, obtain the secondary with higher speed back through reducing connecting pipe 142 inner wall whirl, the end of final shutoff mouth 143 is sealed, a plurality of spouts hole 144 blowout through the border setting, the injection rate is fast, can realize mixing more evenly, this structural design through the nozzle, the injection rate has been increased, the easy deposition of traditional nozzle that has been solved in the design of shutoff mouth 143 simultaneously blocks up the scheduling problem.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The utility model provides a liquid ethylenediamine recovery processing device, includes mixed reaction case (1) and recovery processing equipment (2), its characterized in that, the upper end of mixed reaction case (1) is equipped with gatherer (3), gatherer (3) are including stock solution box (31), stock solution box (31) and first induction pipe (32) intercommunication, and first induction pipe (32) interlude is connected with the pump body (4), and the other end and the atomizing cover (33) of first induction pipe (32) are connected, be equipped with multiunit microturbine blade (34) in first induction pipe (32), be equipped with fluid passage (331) in atomizing cover (33), fluid passage (331) entrance all is equipped with little hydraulic pressure shunt (35), atomizing cover (33) lower extreme is equipped with adjusting part (36), adjusting part (36) include closing cap (361), and closing cap (361) are fixed in atomizing cover (33) lower part, the lower end of the closed cover (361) is connected with the adjusting cover (364) through a connecting column (362), the adjusting cover (364) can rotate around the connecting column (362), and the closed cover (361) and the adjusting cover (364) are provided with circulation holes (363) which correspond to each other.
2. The liquid ethylenediamine recycling device according to claim 1, wherein a filtering component (5) is arranged in the liquid storage tank body (31), the filtering component (5) is fixedly arranged through a supporting ring body (15) on the inner wall of the liquid storage tank body (31), the filtering component (5) comprises a filtering frame (51), an adjusting plate (52) is movably connected in the filtering frame (51), an adjusting rod (53) is arranged on the upper portion of the adjusting plate (52), the adjusting rod (53) can rotate the adjusting plate (52), the upper portion of the adjusting rod (53) extends to the upper portion of the liquid storage tank body (31), and filtering holes (54) are formed in the bottoms of the adjusting plate (52) and the filtering frame (51).
3. The recycling device of liquid ethylenediamine as claimed in claim 2, wherein said adjusting plate (52) and said filtering holes (54) at the bottom of the filtering frame (51) correspond to each other, and said filtering holes (54) are at least one of triangular, circular, square and polygonal.
4. The recycling device of liquid ethylenediamine as claimed in claim 1, wherein said atomizing hood (33) is a conical hood, the aperture of the conical hood gradually increases from top to bottom, a plurality of fluid channels (331) are provided in the atomizing hood (33), the plurality of fluid channels (331) are arranged in a radial manner, and a micro-hydraulic splitter (35) is provided at the inlet of each fluid channel (331).
5. The liquid ethylenediamine recycling device according to claim 1, wherein a hopper cover (6) is installed at the bottom of the mixing reaction tank (1), the hopper cover (6) is connected with a recycling device (8) through a conveying pipe (7), a recycling pipe (9) is installed on the recycling device (8), and an electromagnetic valve is installed on the recycling pipe (9).
6. The liquid ethylenediamine recycling device according to claim 5, wherein a screen (10) is fixedly connected to the inner wall of the funnel cover (6), a coil (11) is fixedly connected to the screen (10), and an adjustable nozzle (12) is arranged at the upper end of the coil (11).
7. The liquid ethylenediamine recycling device according to claim 6, wherein the adjustable nozzle (12) comprises a nozzle (13) and a nozzle (14), the nozzle (14) comprises a rotating ball (141), a reducing connection pipe (142) and a blocking nozzle (143), and the rotating ball (141) is movably connected between the reducing connection pipe (142) and the nozzle (13).
8. The liquid ethylenediamine recycling device according to claim 7, wherein the end of the blocking nozzle (143) is closed, a plurality of spray holes (144) are formed around the blocking nozzle (143), and the inner diameter of each spray hole (144) is gradually increased from inside to outside.
9. A pretreatment recovery method of a liquid ethylenediamine recovery pretreatment device according to any one of claims 1 to 7, characterized by comprising the steps of:
step (1): firstly, a liquid storage box body (31) is connected with a first lead-in pipe (32), and a second lead-in pipe (15) is connected with an MEA pipe;
step (2): then starting a pump body (4), feeding liquid ammonia into the first inlet pipe (32) when the pump body (4) works, cutting the liquid ammonia through a plurality of groups of microturbine blades (34), atomizing the liquid ammonia, feeding the atomized liquid ammonia into an atomizing cover (33), and feeding the atomized liquid ammonia into a fluid channel (331) after being divided by a micro-hydraulic flow divider (35);
and (3): the lower end of the atomization cover (33) is provided with an adjusting component (36), the flow of the liquid ammonia formed after atomization is adjusted by rotating an adjusting cover (362) of the adjusting component (36), and the liquid ammonia is finally sprayed into the mixing reaction box through a sealing cover (361) and a flow hole (363) on the adjusting cover (362);
and (4): MEA steam is conveyed to the coil pipe (11) through a second introducing pipe (15) and is sprayed out through an adjustable spray head (12);
and (5): and mixing and reacting the liquid ammonia atomized liquid with the MEA to realize the pretreatment of recovering the liquid ethylenediamine.
10. The pretreatment recovery method of a liquid ethylenediamine recovery pretreatment device according to claim 9, wherein in the step (1), a pump body (4) is connected to a middle section of the first introduction pipe (32), the other end of the first introduction pipe (32) is connected to an atomization hood (33), a plurality of sets of micro turbine blades (34) are arranged in the first introduction pipe (32), a fluid channel (331) is arranged in the atomization hood (33), and a micro hydraulic flow divider (35) is arranged at an inlet of the fluid channel (331).
CN202110101730.0A 2021-01-26 2021-01-26 Ethylene diamine recycling pretreatment device and pretreatment recycling method Pending CN112827439A (en)

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CN202110101730.0A CN112827439A (en) 2021-01-26 2021-01-26 Ethylene diamine recycling pretreatment device and pretreatment recycling method

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Application Number Priority Date Filing Date Title
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103055794A (en) * 2012-12-27 2013-04-24 山东瑞博龙化工科技股份有限公司 Double-cone atomization gas-liquid reactor
CN105523943A (en) * 2014-10-24 2016-04-27 中国石油化工股份有限公司 Ethylenediamine waste water recovery technology
CN105661786A (en) * 2016-01-05 2016-06-15 北京联合大学 Solar-energy heat-dissipation umbrella based on fluid atomization
CN106237912A (en) * 2016-08-29 2016-12-21 徐州市安东肥业有限公司 A kind of Liqiud-gas mixing device produced for liquid fertilizer
CN206380446U (en) * 2017-01-18 2017-08-08 唐山大农节水科技有限公司 A kind of improved farmland irrigation device
CN107583524A (en) * 2017-11-03 2018-01-16 马延军 Liquid charging stock blender is used in a kind of decoction manufacture
CN212195920U (en) * 2020-05-30 2020-12-22 深圳市保洁恒环境产业有限公司 Spout medicine unmanned aerial vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103055794A (en) * 2012-12-27 2013-04-24 山东瑞博龙化工科技股份有限公司 Double-cone atomization gas-liquid reactor
CN105523943A (en) * 2014-10-24 2016-04-27 中国石油化工股份有限公司 Ethylenediamine waste water recovery technology
CN105661786A (en) * 2016-01-05 2016-06-15 北京联合大学 Solar-energy heat-dissipation umbrella based on fluid atomization
CN106237912A (en) * 2016-08-29 2016-12-21 徐州市安东肥业有限公司 A kind of Liqiud-gas mixing device produced for liquid fertilizer
CN206380446U (en) * 2017-01-18 2017-08-08 唐山大农节水科技有限公司 A kind of improved farmland irrigation device
CN107583524A (en) * 2017-11-03 2018-01-16 马延军 Liquid charging stock blender is used in a kind of decoction manufacture
CN212195920U (en) * 2020-05-30 2020-12-22 深圳市保洁恒环境产业有限公司 Spout medicine unmanned aerial vehicle

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