CN111870992A - Negative pressure decomposition zinc carbonate ammonia complex solution device - Google Patents

Negative pressure decomposition zinc carbonate ammonia complex solution device Download PDF

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Publication number
CN111870992A
CN111870992A CN202010811770.XA CN202010811770A CN111870992A CN 111870992 A CN111870992 A CN 111870992A CN 202010811770 A CN202010811770 A CN 202010811770A CN 111870992 A CN111870992 A CN 111870992A
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China
Prior art keywords
pipe
complex solution
negative pressure
zinc carbonate
evaporation
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CN202010811770.XA
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Chinese (zh)
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彭秋兵
龙石根
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Zhuzhou Ante New Material Technology Co ltd
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Zhuzhou Ante New Material Technology Co ltd
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Priority to CN202010811770.XA priority Critical patent/CN111870992A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0031—Evaporation of components of the mixture to be separated by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D2009/0086—Processes or apparatus therefor

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a negative pressure decomposition device for zinc carbonate ammonia complex solution, which comprises a device body, wherein the device body comprises five evaporation crystallization tanks, a reflux pipe body and a conduction pipe body, the five evaporation crystallization tanks are sequentially arranged along the horizontal direction from left to right at equal intervals, the bottom ends of the outer surface walls of the evaporation crystallization tanks are in conduction connection with a discharge pipe, the discharge pipe is provided with a first electromagnetic valve, and the top ends of the evaporation crystallization tanks are in conduction connection with an air outlet pipe. In the invention, the negative pressure decomposition device for the zinc ammonium carbonate complex solution is provided with five evaporation crystallization tanks which are mutually connected in series through the conduction pipe bodies, so that the energy consumption can be greatly reduced, the decomposition efficiency of the zinc ammonium carbonate complex solution is reduced, each evaporation tank can independently feed the zinc ammonium carbonate comprehensive solution, steam can be independently added, and tail gas NH can be independently discharged3.CO2So that the device for decomposing the zinc carbonate ammonia complex solution under negative pressure can be operated continuously without intermediate pause.

Description

Negative pressure decomposition zinc carbonate ammonia complex solution device
Technical Field
The invention relates to the technical field of zinc oxide production, in particular to a device for decomposing zinc carbonate ammonia complex solution under negative pressure.
Background
At present, zinc oxide on the market is mainly classified into indirect method, direct method and wet method zinc oxide. The indirect method is zinc oxide obtained by a one-step oxidation method using zinc ingots as raw materials, the zinc oxide has large consumption and wide application, but the cost is higher because the zinc ingots are used as the raw materials, and the direct method is zinc oxide obtained by the one-step oxidation method after the zinc-containing waste materials are subjected to impurity removal through processes such as desulfurization and the like. The zinc oxide obtained by the method has low cost, but the application range has certain limitation because the impurity content does not reach the standard. Therefore, in the last decade, China has appeared a large amount of zinc oxide produced by wet process, also called active zinc oxide, or also called nano zinc oxide, the wet process active zinc oxide process is divided into sulfuric acid process active zinc oxide and ammonia process active zinc oxide, the sulfuric acid process active zinc oxide has fast reaction speed, raw material adaptation area and product quality can be selected as the best, because of the use of sulfuric acid in the production process and the higher cost of water treatment, and the price of soda is greatly increased in recent years, and the examination and approval of sulfuric acid process active zinc oxide has been stopped in part of provinces and markets.
The existing device for decomposing the zinc carbonate ammine complex solution adopts an external heating mode to evaporate and crystallize, the zinc carbonate ammine complex solution generates basic zinc carbonate crystals which are large, cannot reach the nanometer level, is easy to adhere to the wall of a container, and simultaneously needs stirring, so that the preparation process is complicated, and the requirements of users cannot be met.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a device for decomposing a zinc carbonate ammonia complex solution under negative pressure.
In order to achieve the purpose, the invention adopts the following technical scheme: the negative pressure zinc carbonate ammonia complex solution decomposing device comprises a device body;
the device body comprises five evaporation crystallization tanks, a reflux pipe body and a conduction pipe body, wherein the five evaporation crystallization tanks are sequentially arranged at equal intervals from left to right along the horizontal direction;
the bottom end of the outer surface wall of the evaporative crystallization tank is in conduction connection with a discharge pipe, the discharge pipe is provided with a first electromagnetic valve, the top end of the evaporative crystallization tank is in conduction connection with an air outlet pipe, the air outlet pipe is provided with a fourth electromagnetic valve, the outer surface wall of the evaporative crystallization tank is in conduction connection with a steam inlet pipe and a raw material inlet pipe, and the steam inlet pipe and the raw material inlet pipe are respectively provided with a third electromagnetic valve and a second electromagnetic valve;
two adjacent evaporation crystallizer is located and is provided with between outlet duct and the steam advances the pipe and switches on the body, two adjacent evaporation crystallizer is located and is provided with the backward flow body between discharging pipe and the raw materials advances the pipe.
Preferably, the reflux pipe body comprises a reflux pipe and a reflux pump, and the reflux pump is arranged on the reflux pipe;
the two ends of the return pipe are respectively adjacent to the air outlet pipe and the steam inlet pipe.
Preferably, the conducting pipe body comprises a guide pipe and a heat-insulating sleeve, and the heat-insulating sleeve is sleeved on the outer surface wall of the guide pipe;
the guide pipe is connected with the air outlet pipe and the steam inlet pipe in a conduction mode, and a control valve is arranged on the guide pipe.
Preferably, the device also comprises an exhaust pipe, wherein the exhaust pipe is in conduction connection with an exhaust pipe which is arranged at the rightmost end and is arranged at the top end of the evaporative crystallization tank.
Preferably, the discharge pipe and the gas outlet pipe on the same evaporative crystallization tank are on the same vertical line.
Preferably, the exhaust pipe is of an inverted-L-shaped structure.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the negative pressure decomposition device for the zinc ammonium carbonate complex solution is provided with five evaporation crystallization tanks which are mutually connected in series through the conduction pipe bodies, so that the energy consumption can be greatly reduced, the decomposition efficiency of the zinc ammonium carbonate complex solution is reduced, each evaporation tank can independently feed the zinc ammonium carbonate comprehensive solution, steam can be independently added, and tail gas NH can be independently discharged3.CO2So that the device for decomposing the zinc carbonate ammonia complex solution under negative pressure can be operated continuously without intermediate pause.
2. According to the device for decomposing the zinc ammonium carbonate complex solution under the negative pressure, steam is directly introduced into the evaporation crystallization tank to heat the zinc ammonium carbonate complex solution, compared with a traditional external heating mode, on one hand, crystallization is small and reaches a nanometer level, on the other hand, the device does not stick to a container wall and does not need stirring, the convenience in production of the zinc ammonium carbonate complex solution is improved greatly, and on the other hand, no stirring mechanism is arranged in the evaporation crystallization tank, so that the cost is reduced, and the cleaning and maintenance of the evaporation crystallization tank are facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a device for decomposing a zinc carbonate ammine complex solution under negative pressure according to the present invention;
FIG. 2 is a schematic structural diagram of an evaporative crystallization tank of the apparatus for decomposing a zinc carbonate ammine complex solution under negative pressure according to the present invention;
FIG. 3 is a schematic structural diagram of a reflux pipe of the apparatus for decomposing a zinc ammonium carbonate complex solution under negative pressure according to the present invention;
FIG. 4 is a schematic structural diagram of a conducting tube of the apparatus for decomposing a zinc ammonium carbonate complex solution under negative pressure according to the present invention.
Illustration of the drawings:
1. a device body; 2. evaporating and crystallizing; 3. a reflux pipe body; 31. a return pipe; 32. a reflux pump; 4. conducting the tube body; 41. a conduit; 42. a heat-insulating sleeve; 43. an exhaust pipe; 44. a control valve; 5. a discharge pipe; 6. a first solenoid valve; 7. feeding the raw materials into a pipe; 8. a second solenoid valve; 9. a steam inlet pipe; 10. a third electromagnetic valve; 11. an air outlet pipe; 12. and a fourth solenoid valve.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships 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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows: referring to fig. 1-4, the device for decomposing the zinc carbonate ammine complex solution under negative pressure comprises a device body 1;
the device body 1 comprises an evaporation crystallization tank 2, a reflux pipe body 3 and a conduction pipe body 4, wherein the evaporation crystallization tank 2 is provided with five evaporation crystallization tanks, and the five evaporation crystallization tanks 2 are sequentially arranged at equal intervals from left to right along the horizontal direction.
The bottom end of the outer surface wall of the evaporative crystallization tank 2 is in conduction connection with a discharge pipe 5, the discharge pipe 5 is provided with a first electromagnetic valve 6, the top end of the evaporative crystallization tank 2 is in conduction connection with an air outlet pipe 11, the air outlet pipe 11 is provided with a fourth electromagnetic valve 12, the outer surface wall of the evaporative crystallization tank 2 is in conduction connection with a steam inlet pipe 9 and a raw material inlet pipe 7, and the steam inlet pipe 9 and the raw material inlet pipe 7 are respectively provided with a third electromagnetic valve 10 and a second electromagnetic valve 8;
two adjacent evaporation crystallizer 2 are located and are provided with between outlet duct 11 and the steam advances pipe 9 and switch on body 4, and two adjacent evaporation crystallizer 2 are located discharging pipe 5 and are provided with backward flow body 3 between the raw materials advances pipe 7.
Example two: referring to fig. 1 and 3, the reflux pipe body 3 comprises a reflux pipe 31 and a reflux pump 32, the reflux pump 32 is arranged on the reflux pipe 31, two ends of the reflux pipe 31 are respectively adjacent to the steam inlet pipe 9 and the air outlet pipe 11, and the reflux pipe 31 is arranged so that the crystallization fluid generated by crystallization of the right-end evaporative crystallization tank 2 can flow back to the evaporative crystallization tank 2 on the left side through the reflux pipe 31 under the action of the reflux pump 32 to perform secondary heating crystallization, and the crystallization quality of the crystallization is improved in a maximized manner.
Example three: referring to fig. 1 and 4, the conducting pipe body 4 comprises a guide pipe 41 and a heat-insulating sleeve 42, the heat-insulating sleeve 42 is sleeved on the outer surface wall of the guide pipe 41, the guide pipe 41 is in conducting connection with the air outlet pipe 11 and the steam inlet pipe 9, the guide pipe 41 is provided with a control valve 44, and the arrangement of the guide pipe 41 can sequentially transmit the steam in the evaporative crystallization tank 2 from left to right, so that the steam can be used for multiple times, the heat energy is saved, and the cost is reduced.
In a fourth embodiment, referring to fig. 1 and 2, the evaporative crystallization device further comprises an exhaust pipe 43, the exhaust pipe 43 is connected to the exhaust pipe 11 disposed at the top end of the rightmost evaporative crystallization tank 2 in a conduction manner, the exhaust pipe 43 is of an inverted L-shaped structure, the exhaust pipe 43 is used for exhausting gas in the rightmost evaporative crystallization tank 2, and the exhaust pipe 43 can be connected to a condensing device to perform condensation on steam and NH in the gas3.CO2And (4) separating and collecting, wherein the discharge pipe 5 and the gas outlet pipe 11 on the same evaporation crystallization tank 2 are on the same vertical line.
The working principle is as follows: when this negative pressure decomposes zinc ammonium carbonate complex solution device uses, it advances to be provided with second solenoid valve 8 on pipe 7 to open the raw materials, add appropriate amount of zinc ammonium carbonate complex solution to five evaporation crystallizer 2's inside, advance pipe 9 through steam this moment and inject steam into in evaporation crystallizer 2 of leftmost end, carry out evaporation crystallization to zinc ammonium carbonate complex solution through the heating, in-process in the use, the inside steam of leftmost end evaporation crystallizer 2 can enter into four back evaporation crystallizer 2 through reflux tube body 3 and use in proper order from left to right, in-process in the use, the crystallization that four evaporation crystallizer 2 that are located the right side produced is under the effect of backwash pump 32, can flow back to through back flow 31 and be located left evaporation crystallizer 2 in, thereby realize evaporation crystallization many times, improve the quality of its crystallization.
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 (6)

1. The device for decomposing the zinc carbonate ammonia complex solution under negative pressure is characterized by comprising a device body (1);
the device body (1) comprises five evaporation crystallization tanks (2), a reflux pipe body (3) and a conduction pipe body (4), wherein the evaporation crystallization tanks (2) are arranged in total, and the five evaporation crystallization tanks (2) are sequentially arranged at equal intervals from left to right along the horizontal direction;
the bottom end of the outer surface wall of the evaporative crystallization tank (2) is in conduction connection with a discharge pipe (5), a first electromagnetic valve (6) is arranged on the discharge pipe (5), the top end of the evaporative crystallization tank (2) is in conduction connection with an air outlet pipe (11), a fourth electromagnetic valve (12) is arranged on the air outlet pipe (11), a steam inlet pipe (9) and a raw material inlet pipe (7) are in conduction connection with the outer surface wall of the evaporative crystallization tank (2), and a third electromagnetic valve (10) and a second electromagnetic valve (8) are respectively arranged on the steam inlet pipe (9) and the raw material inlet pipe (7);
two adjacent evaporation crystallizer (2) are located and are provided with between outlet duct (11) and steam inlet pipe (9) and switch on body (4), two adjacent evaporation crystallizer (2) are located discharging pipe (5) and raw materials and are provided with backward flow body (3) between inlet pipe (7).
2. The negative pressure decomposition zinc carbonate ammine complex solution device according to claim 1, characterized in that the reflux pipe body (3) comprises a reflux pipe (31) and a reflux pump (32), and the reflux pump (32) is arranged on the reflux pipe (31);
two ends of the return pipe (31) are respectively adjacent to the air outlet pipe (11) and the steam inlet pipe (9).
3. The negative pressure decomposition zinc carbonate ammonia complex solution device according to claim 1, wherein the conducting pipe body (4) comprises a conduit (41) and a heat-insulating sleeve (42), and the heat-insulating sleeve (42) is sleeved on the outer surface wall of the conduit (41);
the guide pipe (41) is connected to the air outlet pipe (11) and the steam inlet pipe (9) in a conduction mode, and a control valve (44) is arranged on the guide pipe (41).
4. The negative pressure decomposition zinc carbonate ammine complex solution device according to claim 3, further comprising an exhaust pipe (43), wherein the exhaust pipe (43) is in conduction connection with an exhaust pipe (11) arranged at the top end of the evaporation crystallization tank (2) at the rightmost end.
5. The negative pressure decomposition zinc carbonate ammine complex solution device according to claim 1, characterized in that the discharge pipe (5) and the gas outlet pipe (11) on the same evaporation crystallization tank (2) are on the same vertical line.
6. The negative pressure decomposition zinc carbonate ammine complex solution device according to claim 4, characterized in that the exhaust pipe (43) is of an inverted L-shaped structure.
CN202010811770.XA 2020-08-13 2020-08-13 Negative pressure decomposition zinc carbonate ammonia complex solution device Pending CN111870992A (en)

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Application Number Priority Date Filing Date Title
CN202010811770.XA CN111870992A (en) 2020-08-13 2020-08-13 Negative pressure decomposition zinc carbonate ammonia complex solution device

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101955219A (en) * 2010-09-14 2011-01-26 中北大学 Method and device for preparing nano zinc oxide
CN103386207A (en) * 2013-07-22 2013-11-13 天津长芦汉沽盐场有限责任公司 Potassium chloride triple-effect evaporation system capable of improving heat energy utilization rate
CN203634842U (en) * 2013-10-16 2014-06-11 禾欣可乐丽超纤皮(嘉兴)有限公司 Triple-effect toluene recycling device
CN204619408U (en) * 2015-05-08 2015-09-09 宁波富德能源有限公司 A kind of modified four-effect evaporator
CN205164181U (en) * 2015-10-30 2016-04-20 谢凤妮 Crystal system is evaporated in succession to multiple -effect

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101955219A (en) * 2010-09-14 2011-01-26 中北大学 Method and device for preparing nano zinc oxide
CN103386207A (en) * 2013-07-22 2013-11-13 天津长芦汉沽盐场有限责任公司 Potassium chloride triple-effect evaporation system capable of improving heat energy utilization rate
CN203634842U (en) * 2013-10-16 2014-06-11 禾欣可乐丽超纤皮(嘉兴)有限公司 Triple-effect toluene recycling device
CN204619408U (en) * 2015-05-08 2015-09-09 宁波富德能源有限公司 A kind of modified four-effect evaporator
CN205164181U (en) * 2015-10-30 2016-04-20 谢凤妮 Crystal system is evaporated in succession to multiple -effect

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