A continuous reactor for the production of calcium chloride

Abstract

The utility model relates to continuous reactor technical field, concretely is a kind of preparation calcium chloride's continuous reactor, including primary reactor, secondary reactor and tertiary reactor that are connected in turn, adjacent reactor is communicated by overflow structure, the upper portion of primary reactor, secondary reactor and tertiary reactor is cylinder, and lower portion is inverted cone, at least one exhaust port is equipped in the cylinder top, and the bottom of inverted cone is equipped with slagging-off port, and sealing valve is equipped at the slagging-off port;The cylinder top of primary reactor is equipped with solid calcium compound feed inlet, and its inverted cone lower portion is equipped with hydrochloric acid inlet port;The tertiary reactor is equipped with calcium chloride solution discharge port.The utility model realizes the efficient deposition and cleaning of impurity.

Description

Technical Field

[0001] This utility model relates to the field of continuous reactor technology, specifically a continuous reactor for preparing calcium chloride. Background Technology

[0002] Calcium chloride has wide applications in oil extraction, metallurgy, refrigeration, snow melting and de-icing, dust control, drying, food processing, fruit and vegetable preservation, and pharmaceuticals. It is typically produced by reacting hydrochloric acid with calcium carbonate (containing calcium carbonate and impurities such as quartz and feldspar). Traditional reactors are mostly batch reactors, which suffer from problems such as discontinuous reactions, low efficiency, and significant exhaust gas pollution. Continuous reactors, such as multi-stage series reactors, have emerged, achieving continuous feeding and discharging through overflow.

[0003] Existing continuous reaction equipment suffers from either dispersed impurity deposition or the absence of impurity removal structures. For example, patent CN218962625U discloses a continuous sulfonation reaction device that uses a multi-stage overflow reactor to achieve continuous reaction. However, the reactor has a conventional tank structure and lacks a design for directional impurity deposition. Impurities flow with the reaction liquid to subsequent reactors, affecting product purity. Patent CN106477613A discloses a liquid-solid reaction device that extends the reaction time through multi-stage reactors. However, its tank has an integral structure with drain outlets on both sides, resulting in dispersed impurity settling areas, limited settling efficiency, cumbersome slag discharge operations, and inconvenient cleaning, making it difficult to meet the high-efficiency impurity removal requirements in calcium chloride preparation.

[0004] Therefore, there is an urgent need for a specialized device that can achieve precise deposition of impurities in reactors at all levels and convenient slag discharge during continuous reaction processes. Utility Model Content

[0005] The purpose of this invention is to provide a continuous reactor for preparing calcium chloride. By designing the lower part of the reactor as an inverted cone structure, it effectively promotes the sedimentation of impurities, improves the purity of the reaction solution, and facilitates the discharge of impurities.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A continuous reactor for preparing calcium chloride includes a primary reactor, a secondary reactor, and a tertiary reactor connected in series, with adjacent reactors connected by an overflow structure. The upper part of the primary, secondary, and tertiary reactors is a cylindrical body, and the lower part is an inverted cone. The top of the cylindrical body is provided with at least one exhaust port, and the bottom of the inverted cone is provided with a slag discharge port, with a sealing valve at the slag discharge port. The top of the cylindrical body of the primary reactor is provided with a solid calcium compound inlet, and the lower part of its inverted cone is provided with a hydrochloric acid inlet. The tertiary reactor is provided with a calcium chloride solution outlet.

[0007] Furthermore, the overflow structure includes an overflow port opened on the reactor shell and an overflow pipe connected to the overflow port; the height of the overflow port is lower than the top of the shell; the height of the overflow ports of adjacent reactors decreases sequentially.

[0008] Furthermore, the height of the inverted cone of the primary reactor, secondary reactor, and tertiary reactor is 1.5-2 times the height of their corresponding cylindrical bodies.

[0009] Furthermore, the exhaust port is connected to the waste gas treatment device via a pipe.

[0010] Compared with existing technologies, the beneficial effects of this solution are: 1. The reactor body adopts an "upper cylindrical body + lower inverted cone" structure. The inverted cone forms a concentrated settling area, and impurities quickly gather to the bottom under the action of gravity, which improves the settling efficiency compared with traditional tanks.

[0011] 2. The slag discharge port at the bottom of the inverted cone can directly discharge accumulated impurities, avoiding the accumulation of impurities from affecting the reaction process, and making the slag discharge operation more convenient.

[0012] 3. The three reactors connected in series are continuously linked by an overflow structure, which not only ensures the reaction time, but also achieves multi-stage separation of impurities through stepwise sedimentation, significantly improving the purity of calcium chloride products. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of a continuous reactor for preparing calcium chloride according to this utility model.

[0014] In the diagram: 1- Primary reactor; 11- Solid calcium compound inlet; 12- Hydrochloric acid inlet; 2- Secondary reactor; 3- Tertiary reactor; 4- Exhaust port; 5- Slag discharge port; 6- Calcium chloride solution outlet; 7- Overflow port; 8- Overflow pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Implementation, for example, attached Figure 1As shown: This embodiment is a continuous reactor for preparing calcium chloride. The reactor of this utility model includes a primary reactor 1, a secondary reactor 2 and a tertiary reactor 3 connected in series. Adjacent reactors are connected by an overflow structure. The upper part of each reactor is a cylinder and the lower part is an inverted cone. The bottom of the inverted cone is provided with a slag discharge port 5 and the top of the cylinder is provided with at least one exhaust port 4.

[0017] Solid calcium compound is added through the solid calcium compound inlet 11 at the top of the primary reactor 1, while hydrochloric acid enters through the hydrochloric acid inlet 12 at the bottom of the inverted cone of the primary reactor 1. The reaction occurs in the primary reactor 1 to produce calcium chloride. After a period of reaction, the reaction solution flows out through the overflow port 7 on the primary reactor 1 and overflows along the overflow pipe 8 to the secondary reactor 2. The reaction solution continues to react in the secondary reactor 2 for a period of time before overflowing again into the tertiary reactor 3. The tertiary reactor 3 is equipped with a calcium chloride solution outlet 6, through which the final product is collected. The overflow port height of each reactor is below the top of the reactor body, and the overflow port height of adjacent reactors decreases sequentially.

[0018] During the reaction, impurities that do not react with hydrochloric acid gradually settle and deposit at the bottom of the inverted cone of the reactor, and are periodically discharged through the sealed valve of the slag discharge port 5. The height of the inverted cones of the primary reactor 1, secondary reactor 2, and tertiary reactor 3 is 1.5-2 times the height of their corresponding cylindrical sections. Gases generated during the reaction are discharged through exhaust port 4 and treated by a waste gas treatment device before being released or recycled.

[0019] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A continuous reactor for preparing calcium chloride, comprising a primary reactor, a secondary reactor, and a tertiary reactor connected in series, with adjacent reactors connected by an overflow structure, characterized in that: The primary, secondary, and tertiary reactors are cylindrical at the top and inverted conical at the bottom. The top of the cylindrical body has at least one exhaust port, and the bottom of the inverted conical body has a slag discharge port with a sealing valve. The top of the cylindrical body of the primary reactor has a solid calcium compound inlet, and the bottom of the inverted conical body has a hydrochloric acid inlet. The tertiary reactor has a calcium chloride solution outlet.

2. The continuous reactor for preparing calcium chloride according to claim 1, characterized in that: The overflow structure includes an overflow port on the reactor shell and an overflow pipe connected to the overflow port; the height of the overflow port is lower than the top of the shell; the height of the overflow ports of adjacent reactors decreases sequentially.

3. The continuous reactor for preparing calcium chloride according to claim 1, characterized in that: The height of the inverted cone of the primary, secondary, and tertiary reactors is 1.5-2 times the height of their corresponding cylindrical bodies.

4. The continuous reactor for preparing calcium chloride according to claim 1, characterized in that: The exhaust port is connected to the waste gas treatment device via a pipe.

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