阅读说明：本技术 散湿盐生产储运系统及干盐和散湿盐联合生产储运系统 (Scattered wet salt production, storage and transportation system and dry salt and scattered wet salt combined production, storage and transportation system ) 是由 王韬 唐世俭 刘邵云 陈圣儒 骆成 孙斌 于 2021-05-29 设计创作，主要内容包括：制盐用盐浆储罐及散湿盐生产系统,涉及散湿盐生产技术领域,其包括封闭的罐体,所述罐体的顶部设有用于连接增稠器盐浆输送管的第一输入口和用于连接离心机分离清液输送管的第二输入口,所述罐体的底部设有用于连接旋流器的输出口,所述罐体内插设有若干根用于通入精卤的淘洗管,所述淘洗管的一端深入罐体的底部,并且位于所述套管内的淘洗管管壁上还开设有若干个通孔。本发明可在极大程度上防止盐浆储罐堵塞,从而避免对盐浆储罐进行频繁刷洗。(Salt slurry storage tank and loose wet salt production system for salt manufacturing relates to loose wet salt production technical field, and it includes the confined jar body, the top of the jar body is equipped with the first input port that is used for connecting thickener salt slurry conveyer pipe and is used for connecting the second input port that centrifuge separated clear liquid conveyer pipe, the bottom of the jar body is equipped with the delivery outlet that is used for connecting the swirler, the internal interpolation of jar is equipped with a plurality of roots and is used for letting in the elutriation pipe of refined bittern, the bottom of the jar body is deepened to the one end of elutriating the pipe, and is located still seted up a plurality of through-hole on the intraductal elutriation pipe wall of cover. The invention can prevent the salt slurry storage tank from being blocked to a great extent, thereby avoiding frequent brushing of the salt slurry storage tank.)

1. Disperse wet salt production storage and transportation system, including the salt thick liquid holding vessel of receiving evaporation crystallization process salt thick liquid, be used for the thickener that separation and concentration contain the crystal salt liquid, further separate the centrifuge that contains the swirler of crystal salt liquid, connect swirler salt thick liquid discharge pipe, its characterized in that: still be equipped with at least one buffering salt thick liquid jar between thickener and swirler the buffering salt thick liquid jar receives through the pipeline and comes from thickener exhaust salt thick liquid, buffering salt thick liquid tank bottom is through the feed inlet of tube coupling swirler, buffering salt thick liquid tank bottom is equipped with the washing pipe that is used for adding the refined brine to the jar in, and the end of washing pipe is equipped with the nozzle or the valve plate of washing to the salt thick liquid in the buffer jar.

2. The bulk wet salt production storage and transportation system of claim 1, wherein: the system also comprises a clear liquid storage tank for collecting the clear liquid of the salt solution obtained by the separation of the cyclone and the centrifuge, and the clear liquid storage tank is connected with the buffer salt slurry tank through a pipeline.

3. The bulk wet salt production storage and transportation system of claim 1 or 2, wherein: the system also includes an overflow tank for collecting the salt-containing brine that overflows the salt slurry tank.

4. A combined production, storage and transportation system for dry salt and dispersed wet salt, comprising the production, storage and transportation system for dispersed wet salt as claimed in any one of claims 1 to 3, characterized in that: and a straight connecting pipe directly connecting the thickener and the cyclone.

5. The combined dry and bulk salt production, storage and transportation system of claim 4, wherein: be provided with band conveyer behind the centrifuge, be equipped with the drying bed and the transportation container that can switch as required behind the band conveyer.

Technical Field

The invention relates to the technical field of salt production, in particular to a scattered wet salt production, storage and transportation system and a dry scattered wet salt production, storage and transportation system.

Background

In the existing well salt industry, brine is generally extracted underground, then industrial salt and salt are prepared by taking the brine as a raw material and adopting an evaporation method, the solid-liquid ratio of salt slurry obtained from a salt discharge foot of an evaporation crystallization tank is about 1: 2, the salt slurry with the concentration is stored in a salt slurry storage tank, the water content of the salt slurry is large at the moment, the salt slurry cannot be directly separated by a centrifugal machine, and therefore natural sedimentation is carried out through a thickener, and the solid-liquid ratio is improved; the thickened salt slurry is pumped to a cyclone and a centrifuge by a magma pump, the magma with high concentration and water content of about 3 percent is obtained by separation, if dry salt is required to be prepared, the magma is directly sent to a drying bed for drying, and if wet salt is required by customers, the magma is directly sent to a wet salt storage yard.

The prior art currently has several problems:

1. in order to meet the requirements of customers, a wet salt storage yard with extremely large storage capacity needs to be arranged; thus, great difficulty and burden are existed in warehousing transportation and pollutant management;

2. the wet salt is difficult to store and easy to agglomerate, a large amount of anticaking agent needs to be added, but because the wet salt is stored under natural conditions, the air humidity is high in the plum rain season in south, the wet salt is always in the dynamic cycle of dissolution and crystallization from the microscopic view, and the anticaking agent cannot fundamentally solve the problem of agglomeration;

3. compared with a brine collection and evaporation crystallization system, the storage processes of salt slurry thickening, dehydration and drying and sodium chloride products are two processes in the salt production process, but the two processes are closely connected, if any process in the two processes has equipment faults, such as cyclone faults, centrifuge faults and conveyer belt faults, the whole evaporation crystallization system can be influenced, and it is known that the evaporation crystallization system has large energy consumption, high starting cost and complex starting preparation work, and almost no salt production enterprise frequently starts and stops the equipment, so that the annual operation of the evaporation crystallization system is ensured as much as possible; therefore, it is very critical to minimize the influence of the two processes;

4. because the existing wet salt production is that two processes are directly connected with an evaporative crystallization system, the evaporative crystallization system is not uniform in salt purity actually and is influenced by the quality of collected brine, although the brine purity can be improved to more than 99.1% by the existing purification process of the pre-positioned brine of the evaporative crystallization system, the content of water-soluble impurities such as Na2So4 is low, and further purification is difficult. Therefore, when the quality of brine obtained by brine extraction and purification fluctuates, the quality fluctuation (mainly the fluctuation of the content of sodium sulfate, which affects the quality) of salt slurry obtained by evaporation, crystallization and salt discharge inevitably occurs;

disclosure of Invention

The invention aims to provide a scattered wet salt production storage and transportation system and an improved dry wet salt production storage and transportation system based on the scattered wet salt production storage and transportation system, which can solve the technical problems mentioned in the background technology.

In order to solve the technical problems, the invention adopts the following technical scheme: scattered wet salt production storage and transportation system, including the salt thick liquid holding vessel that receives evaporation crystallization process salt thick liquid, be used for separating and the concentrated thickener that contains the crystal salt liquid, further separate the swirler that contains the crystal salt liquid, the centrifuge of connecting swirler salt thick liquid discharge pipe still be equipped with at least one buffer salt thick liquid jar between thickener and swirler, buffer salt thick liquid jar receives the salt thick liquid that comes from the thickener discharge through the pipeline, the feed inlet of buffer salt thick liquid jar bottom through the tube coupling swirler, buffer salt thick liquid jar bottom is equipped with the elutriation pipe that is used for adding refined brine to the jar in, and the end of elutriating the pipe is equipped with the valve plate of elutriating the salt thick liquid in the buffer tank.

Further, the dispersed wet salt production storage and transportation system further comprises a clear liquid storage tank for collecting the clear liquid of the salt solution obtained by separation of the cyclone and the centrifuge, and the clear liquid storage tank is connected with the buffer salt slurry tank through a pipeline.

Further, the scattered wet salt production storage and transportation system also comprises an overflow box for collecting salt-containing brine overflowing from the salt slurry tank.

The invention also provides a dry salt and scattered wet salt combined production, storage and transportation system, which comprises any one of the scattered wet salt production, storage and transportation systems and further comprises a straight connecting pipe directly connecting the thickener and the cyclone.

Further, be provided with band conveyer behind the centrifuge, for the production of nimble switching dry salt and wet salt, be equipped with the dry bed and the transportation container that can switch as required behind the band conveyer.

The invention has the beneficial effects that: the production arrangement of dry salt and wet salt is flexibly carried out, and secondary pollution and agglomeration of the wet salt in the storage process are avoided; meanwhile, the buffer salt slurry tank has an elutriation function, so that the problem of unstable quality in the existing wet salt production can be further solved, and most importantly, the influence of two-process faults on the evaporative crystallization salt production process is fundamentally solved by a new system.

Drawings

FIG. 1 is a schematic diagram of a wet bulk salt production system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a salt slurry tank for salt making in the novel embodiment of the present invention.

The reference signs are:

1-tank body 2-first input port 3-second input port

4-an output port 5-an elutriation pipe 6-a through hole.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally 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 by those skilled in the art according to specific situations.

Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the 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, should not be construed as limiting the invention.

Example one

As shown in fig. 1, the scattered wet salt production, storage and transportation system comprises a salt slurry storage tank for receiving salt slurry in an evaporation and crystallization process, a thickener for separating and concentrating crystal salt-containing liquid, a cyclone for further separating crystal salt-containing liquid, and a centrifuge connected with a cyclone salt slurry discharge pipe, wherein at least one buffer salt slurry tank is further arranged between the thickener and the cyclone, the buffer salt slurry tank receives the salt slurry discharged from the thickener through a pipeline, the bottom of the buffer salt slurry tank is connected with a feed inlet of the cyclone through a pipeline, an elutriation pipe for adding refined brine into the tank is arranged at the bottom of the buffer salt slurry tank, and a flow distribution disc or a nozzle for elutriating the salt slurry in the buffer tank is arranged at the tail end of the elutriation pipe.

Further, the dispersed wet salt production storage and transportation system further comprises a clear liquid storage tank for collecting the clear liquid of the salt solution obtained by separation of the cyclone and the centrifuge, and the clear liquid storage tank is connected with the buffer salt slurry tank through a pipeline. The clear liquid is further introduced into the tank body, on one hand, the low-concentration salt solution for preparing the salt slurry is recycled, and on the other hand, the water seal can be performed on the salt slurry in the tank body.

Further, the scattered wet salt production storage and transportation system also comprises an overflow box for collecting salt-containing brine overflowing from the salt slurry tank. The lateral wall on jar body upper portion sets up the overflow pipe, and the overflow pipe is connected to an overflow case for the overflow liquid in the jar body then can be collected, and what store in the overflow case can be regarded as refined brine again and be utilized again in foretell elutriation pipe, and abundant connection and realization reuse between each link have optimized this set of scattered wet salt production system to a great extent.

Specifically, a salt slurry pump is arranged on a pipeline of the salt slurry storage tank leading to the thickener, a pipeline of the salt slurry storage tank leading to the buffer salt slurry tank is arranged through a branch pipeline, and in order to avoid overlarge salt slurry concentration separated by the thickener, a refined brine conveying pipe for flushing and adding refined brine is further arranged on a pipeline of the thickener communicated with the buffer salt slurry tank.

As shown in fig. 2, the salt slurry storage tank for salt production comprises a closed tank body, wherein a first input pipe for connecting a thickener and a second input pipe for connecting a centrifuge to separate clear liquid are arranged at the top of the tank body, an output pipe 4 for connecting a cyclone is arranged at the bottom of the tank body, a plurality of elutriation pipes 5 for introducing refined brine are inserted into the tank body, one end of each elutriation pipe 5 extends into the bottom of the tank body 1, and a plurality of through holes 6 are further formed in the pipe wall of each elutriation pipe 5 positioned in a sleeve 1.

Another kind of design is, through the end at the pipe of elutriating, set up a valve plate, the valve plate is the disc, the higher authority is provided with the nozzle of a plurality of beginning to the tank deck, through set up elutriating pipe 5 and offer through-hole 6 on elutriating pipe 5 in the bottom of the jar body, the salt thick liquid that the refined brine that can make the letting in constantly elutriates 1 bottoms of jar body to prevent to a great extent that the salt thick liquid storage tank from blockking up, sodium sulfate content in the salt thick liquid that simultaneously can also be continuous and carry and come to the thickener dilutes. The salt slurry discharged by the evaporation crystallization system contains a certain amount of sodium sulfate impurities, and also exists in a complex and intricate package form with salt crystals, and impurities cannot be removed by adopting modes such as centrifugal separation and the like, so that the salt slurry can be continuously dynamically dissolved and crystallized by adopting a supersaturated solution of sodium chloride and an unsaturated solution (namely refined brine) of sodium sulfate, and the sodium sulfate originally packaged in the sodium chloride crystals and the sodium sulfate crystals of common crystals in the salt slurry are dissolved and diluted.

Example two

Compared with the first embodiment, the dry salt and scattered wet salt combined production storage and transportation system comprises a salt slurry storage tank for receiving salt slurry in an evaporation crystallization process, a thickener for separating and concentrating crystal salt-containing liquid, a cyclone for further separating crystal salt-containing liquid, and a centrifuge connected with a cyclone salt slurry discharge pipe, wherein at least one buffer salt slurry tank is further arranged between the thickener and the cyclone, the buffer salt slurry tank receives the salt slurry discharged from the thickener through a pipeline, the bottom of the buffer salt slurry tank is connected with a feed inlet of the cyclone through a pipeline, an elutriation pipe for adding refined brine into the tank is arranged at the bottom of the buffer salt slurry tank, a flow distribution plate for elutriating the salt slurry in the buffer tank is arranged at the tail end of the elutriation pipe, and the system further comprises a direct connection pipe for directly connecting the thickener and the cyclone.

Further, be provided with band conveyer behind the centrifuge, for the production of nimble switching dry salt and wet salt, be equipped with the dry bed and the transportation container that can switch as required behind the band conveyer.

The aim of adopting the direct connecting pipe is that dry salt which can be conveniently stored in production and the period (mainly brine stability) of stable quality of discharged salt can be directly elutriated without passing through a buffer tank, so that the direct connecting pipe is more flexible.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.