Preparation method and equipment of composite water treatment agent

Abstract

The invention is applicable to the field of water treatment agents, and provides a preparation method and equipment of a composite water treatment agent, and the preparation method comprises the following steps: adding quantitative diluted hydrochloric acid, high-iron bauxite and calcium hydroxide into an open reaction kettle; a kettle cover is buckled, and the temperature of the reaction kettle is controlled to rise to the required reaction temperature; in the reaction process, the temperature in the reaction kettle is increased to 100-120 DEG C, heat preservation is conducted for preset time, then quantitative calcium chlorate powder is added, after the reaction is conducted for preset time, plate-frame pressure filtration is conducted, and the water treatment agent is obtained. Meanwhile, the invention further provides equipment suitable for production of the composite water treatment agent, and heat loss during material adding in the middle reaction period can be reduced.

Description

Technical Field

[0001] The invention relates to the field of water treatment chemicals, and in particular to a preparation method and equipment for a composite water treatment chemical. Background Art

[0002] Flocculants are a class of chemical substances used to promote the aggregation and sedimentation of suspended particles in water. They are widely used in water treatment, mining, food processing and other fields. Their core function is to combine fine particles into larger flocs through charge neutralization, adsorption bridging and other mechanisms, thereby accelerating the solid-liquid separation process. According to their composition and properties, flocculants can be divided into the following categories: inorganic flocculants, organic polymer flocculants, etc. However, the current flocculants are not effective in sewage treatment processes.

[0003] At the same time, the heat loss in the reactor for manufacturing flocculants is relatively serious, which on the one hand causes energy waste, and on the other hand, the temperature reduction destroys the reaction environment of the reactants, making it impossible for the produced flocculants to achieve the best effect.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a method and equipment for preparing a composite water treatment agent, in which the ferric chloride component in the agent is used for sewage treatment to remove heavy metals and phosphates in water. At the same time, the application also provides equipment suitable for the production of composite water treatment agents, which can reduce heat loss when adding materials in the middle of the reaction.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a method for preparing a composite water treatment agent, comprising adding a certain amount of dilute hydrochloric acid, high-iron bauxite and calcium hydroxide into an open reactor; closing the reactor cover and controlling the reactor to heat up to a desired reaction temperature; during the reaction process, the temperature in the reactor is raised to 100°C to 120°C and kept warm for a predetermined time, and then a certain amount of calcium chlorate powder is added. After the reaction time is predetermined, the reaction is filtered through a plate and frame filter press to obtain the water treatment agent.

[0007] According to the preparation method of the composite water treatment agent of the present invention, the concentration of the dilute hydrochloric acid is 31%.

[0008] According to the preparation method of the composite water treatment agent of the present invention, the ratio of the amount of dilute hydrochloric acid, high iron bauxite, calcium hydroxide and calcium chlorate powder added is 21:6:2:5.

[0009] According to the preparation method of the composite water treatment agent of the present invention, the insulation time after the temperature in the reactor is raised is four hours.

[0010] According to the preparation method of the composite water treatment agent of the present invention, the reaction time after adding calcium chlorate powder into the reactor is two hours.

[0011] The equipment of the preparation method of the composite water treatment agent according to the present invention includes a reactor body, a feed port arranged on the side wall of the reactor body, and a material transfer structure arranged inside the reactor body for receiving materials and blocking heat dissipation; the material transfer structure includes a plurality of compartments arranged in the reactor body, a discharge port arranged on the side wall of each compartment and connected to the reaction space in the reactor body, and a driving component for driving the plurality of compartments to switch positions; the driving component drives the plurality of compartments to selectively connect with the feed port, which is recorded as a receiving state; a blocking structure for blocking the discharge port of the compartment in the receiving state is arranged inside the reactor body, and the internal space of the compartment after blocking is independent of the reaction space in the reactor body.

[0012] According to the preparation equipment of the composite water treatment agent of the present invention, the multiple compartments together form a rotating partition plate, which includes a circular bottom plate driven to rotate, a baffle plate arranged along the outer edge of the circular bottom plate, and multiple partition plates arranged on the circular bottom plate for dividing the disk surface space; the discharge port is arranged on the baffle plate; the upper edge of the baffle plate is in contact with the inner wall of the reactor body, and there is a space between the lower edge and the inner wall of the reactor body to facilitate the falling of materials.

[0013] According to the equipment for preparing the composite water treatment agent of the present invention, the circular chassis is connected to a driving shaft via a connecting structure, and the components therebetween are rotatably positioned.

[0014] According to the equipment for preparing the composite water treatment agent of the present invention, the connection structure comprises a slot arranged on one of the matching pieces and an inserting block inserted into the slot and arranged on the other matching piece.

[0015] According to the equipment for preparing the composite water treatment agent of the present invention, the blocking structure is an arc-shaped blocking plate, and its curvature corresponds to the curvature of the outer edge of the rotating partition plate.

[0016] According to the preparation equipment of the composite water treatment agent of the present invention, a bulk material filter screen is arranged below the rotating partition plate, the bulk material filter screen is connected to the rotating partition plate through an elastic member, and is driven by a vibration driving structure to vibrate.

[0017] According to the preparation equipment of the composite water treatment agent of the present invention, the vibration driving structure includes a plurality of driving protrusions arranged on the inner wall of the reactor body and a supporting member arranged on the bulk material filter screen and matched with the driving protrusions.

[0018] According to the equipment for preparing the composite water treatment agent of the present invention, the support member is an elastic rod.

[0019] The present invention provides a method and equipment for preparing a composite water treatment agent, wherein the method comprises adding a certain amount of dilute hydrochloric acid, high iron bauxite and calcium hydroxide into an open reactor; closing the reactor cover to control the reactor to heat up to the required reaction temperature; during the reaction process, the reactor is heated to 100°C to 120°C and kept warm for a predetermined time, and then a certain amount of calcium chlorate powder is added. After the reaction is performed for a predetermined time, the water treatment agent is obtained by plate and frame filter pressing. The ferric chloride component in the agent of the present invention is used for sewage treatment to remove heavy metals and phosphates in water. At the same time, the present application also provides equipment suitable for the production of composite water treatment agents, which can reduce heat loss when adding materials in the middle of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the reactor body of the present invention; Figure 2 It is a partial structural schematic diagram of the reactor body of the present invention; Figure 3 It is a schematic diagram of the structure of the rotating partition plate of the present invention; Figure 4 It is a schematic diagram of the installation of the rotating partition plate and the bulk material filter; Figure 5 It is the coordination diagram of the rotating partition plate and the blocking plate; Figure 6 yes Figure 4 A schematic diagram of the structure of the vibration drive structure at the middle A part; In the figure, 1-reactor body, 2-feed port, 21-discharge port, 22-baffle, 3-circular chassis, 4-partition, 5-space, 6-drive shaft, 61-obstacle avoidance hole, 7-blocking plate, 8-slot, 9-insert block, 10-bulk material filter, 11-elastic member, 12-drive protrusion, 13-support member. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The invention provides a method and equipment for preparing a composite water treatment agent.

[0023] The preparation method of the composite water treatment agent includes adding a certain amount of dilute hydrochloric acid (with a concentration of 31%), high-iron bauxite and calcium hydroxide into an open reactor; closing the reactor cover, controlling the reactor to heat up (using traditional steam heating) to the required reaction temperature (about 50°C); during the reaction process, the temperature in the reactor is raised (chemical reaction releases heat) to 100°C~120°C (the optimal temperature is about 110°C), and the temperature is kept for a predetermined time (about four hours), and then a certain amount of calcium chlorate powder is added (wherein, in this embodiment, the ratio of the amount of dilute hydrochloric acid, high-iron bauxite, calcium hydroxide, and calcium chlorate powder is 21:6:2:5), and after the reaction for a predetermined time (about two hours), the liquid is obtained by plate and frame filtration, which is the water treatment agent (polyaluminum ferric calcium chloride).

[0024] See also Figure 1 , Figure 2 The present application also provides a device applied to the above-mentioned composite water treatment agent preparation method, which mainly solves the problem of heat loss in the kettle when calcium chlorate powder material is added in the middle of the reaction. The device includes a reactor body 1 (specifically in this embodiment, the reactor can be a reactor), a feed port 2 arranged on the side wall of the reactor body 1 and a material transfer structure arranged inside the reactor body 1. The material transfer structure is used to receive materials (to prevent materials from directly falling into the reaction space of the reactor body 1); on the other hand, it is used to block the dissipation of reaction heat (heat generated by dilute hydrochloric acid, high iron bauxite and calcium hydroxide during the reaction process) to ensure the reaction conditions of the mixed solution (mixed solution of dilute hydrochloric acid, high iron bauxite and calcium hydroxide) and calcium chlorate powder; the feed port 2 can be directly connected to a pipeline for supplying calcium chlorate powder, and the material supplied by it will enter the reactor body 1 through the feed port 2.

[0025] The material transfer structure includes a plurality of compartments 2 arranged in the reactor body 1, a discharge port 21 arranged on the side wall of each compartment 2 and connected to the reaction space in the reactor body 1, and a driving component for driving the plurality of compartments 2 to switch positions.

[0026] The driving component drives one of the multiple compartments 2 to connect with the feed port 2, which is recorded as a receiving state; a sealing structure is provided inside the reactor body 1 to seal the discharge port 21 of the compartment 2 in the receiving state, and the internal space of the compartment 2 after sealing is independent of the reaction space inside the reactor body 1.

[0027] That is to say, in this receiving state, the internal space of the compartment 2 and the reaction space in the reactor body 1 form two independent and different spaces. At this time, the fed material will enter the compartment 2 first, which can effectively block the reaction heat from dissipating into the feed pipe through the feed port 2, thereby ensuring the constant temperature of the reaction space in the reactor body 1. On the other hand, due to the receiving function of the compartment 2, the rate at which the material supplied by the feed pipe enters the reaction space of the reactor body 1 is slowed down, playing a role in buffering and dispersing the material (which will be described in detail below), which can effectively increase the mixing rate of the material (calcium chlorate powder) and shorten the stirring reaction time (the reactor is generally provided with a stirring structure for mixing the material).

[0028] See also Figure 3 , Figure 4 and Figure 5 Specifically, in order to increase the integration of the equipment and reduce the occupation of the internal space of the reactor body 1 by the material transfer structure, the multiple partitions 2 of the present application together constitute a rotating partition plate, which includes a circular chassis 3 driven to rotate, a baffle 22 arranged along the outer edge of the circular chassis 3 and a plurality of partitions 4 arranged on the circular chassis 3 for separating the disk space, and the discharge port 21 is arranged on the baffle 22.

[0029] Preferably, in order to ensure the unloading operation of the circular chassis 3, it has a certain taper, that is, it is set to a conical disc structure with a high center position and a low edge position.

[0030] See also Figure 4 The upper edge of the baffle 22 is in contact with the inner wall of the reactor body 1, and there is a space 5 between the lower edge and the inner wall of the reactor body 1 for convenient material falling. The material discharged from the discharge port 21 of the partition 2 in a non-receiving state (i.e., a discharging state) falls from the space 5 into the reaction space of the reactor body 1.

[0031] In order to improve the convenience of assembling the circular chassis 3 and the partition 4, the axis of the circular chassis 3 coincides with the axis of the reactor body 1, and the multiple partitions 4 are arranged along the radial direction of the circular chassis 3; and in order not to affect the rotation of the circular chassis 3 and prevent heat from flowing out from the fitting gap, a flexible seal, such as a brush layer or a rubber layer, can be installed on the upper edge of the baffle 22.

[0032] The circular chassis 3 is connected to a driving shaft 6 (the driving shaft 6 may be a stirring shaft of the stirring structure or an independently arranged driving shaft. It should be noted that an obstacle avoidance hole 61 for the stirring shaft to pass through is arranged in the middle of the circular chassis 3) through a connecting structure, and the components are rotated and positioned between the two. When the driving shaft 6 is driven by the driving motor to rotate, the circular chassis 3 is further driven to rotate.

[0033] The connection structure includes a slot 8 disposed on one of the mating parts (in this embodiment, the mating part is the drive shaft 6) and an insert block 9 ( Figure 3 and Figure 5 As shown), of course, the plug block 9 and the slot 8 can also be interchangeably arranged.

[0034] The blocking structure is an arc-shaped blocking plate 7 ( Figure 5 As shown in FIG. 1 , the curvature thereof corresponds to the curvature of the outer edge of the rotating partition plate. When the rotating partition plate rotates to make the feed port 2 of the partition chamber 2 enter the coverage area of ​​the blocking plate 7, the feed port 2 is blocked, and the internal space of the partition chamber 2 is independent of the reaction space in the reactor body 1.

[0035] See also Figure 4 and Figure 6 In order to optimize the receiving effect of the material transfer structure and make the material discharged from the compartment 2 more dispersed, a bulk material filter 10 is arranged below the rotating partition plate; the material discharged from the discharge port 21 will fall onto the bulk material filter 10, and the material will be further dispersed and discharged to the reaction space below; the bulk material filter 10 is connected to the rotating partition plate through an elastic member 11 (spring), and is driven by a vibration drive structure to vibrate, and the vibration effect generated by it cooperates with the bulk material filter 10 to achieve the dispersed material discharge work. The vibration drive structure includes a plurality of drive protrusions 12 arranged on the inner wall of the reactor body 1 and a support member 13 arranged on the bulk material filter 10 and matched with the drive protrusion 12, and the support member 13 is an elastic rod or other supporting structure. During operation, when the circular chassis 3 drives the bulk material filter 10 to rotate through the elastic member 11, the support member 13 cooperates with the driving protrusion 12 (the support member 13 is affected by the height difference formed by the gap between the protrusion 12 and the adjacent driving protrusion 12 during movement, and the cooperation between the two produces a vibration effect), the bulk material filter 10 is driven to produce an up and down vibration effect.

[0036] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for preparing a composite water treatment agent, characterized in that: The method comprises adding a certain amount of dilute hydrochloric acid, high-iron bauxite and calcium hydroxide into an open reaction kettle; Close the kettle cover and control the reactor to heat up to the required reaction temperature; During the reaction process, the temperature in the reactor is raised to 100°C~120°C and kept warm for a predetermined time, and then a certain amount of calcium chlorate powder is added. After the reaction time is predetermined, the water treatment agent is obtained by plate and frame filter pressing.

2. The method for preparing the composite water treatment agent according to claim 1, characterized in that: The concentration of the dilute hydrochloric acid is 31%.

3. The method for preparing the composite water treatment agent according to claim 1, characterized in that: The ratio of the amount of diluted hydrochloric acid, high iron bauxite, calcium hydroxide and calcium chlorate powder added is 21:6:2:

5.

4. The method for preparing the composite water treatment agent according to claim 1, characterized in that: The temperature keeping time after the temperature in the reactor is raised is four hours.

5. The method for preparing the composite water treatment agent according to claim 1, characterized in that: The reaction time after adding calcium chlorate powder into the reactor is two hours.

6. An apparatus applied to the method for preparing the composite water treatment agent according to claim 1, characterized in that: It includes a reactor body, a feed port arranged on the side wall of the reactor body, and a material transfer structure arranged inside the reactor body for receiving materials and blocking heat dissipation; The material transfer structure includes a plurality of compartments arranged in the reactor body, a discharge port arranged on the side wall of each compartment and connected to the reaction space in the reactor body, and a driving component for driving the plurality of compartments to switch positions; The driving component drives one of the multiple compartments to connect with the feed port, which is recorded as the receiving state; a blocking structure is provided inside the reactor body to block the discharge port of the compartment in the receiving state, and the internal space of the compartment after blocking is independent of the reaction space inside the reactor body.

7. The preparation equipment of the composite water treatment agent according to claim 6, characterized in that: The plurality of compartments together form a rotating partition plate, which includes a circular bottom plate driven to rotate, a baffle plate arranged along the outer edge of the circular bottom plate, and a plurality of baffle plates arranged on the circular bottom plate for dividing the disk surface space; the discharge port is arranged on the baffle plate; The upper edge of the baffle is in contact with the inner wall of the reactor body, and there is a space between the lower edge and the inner wall of the reactor body for facilitating the falling of materials.

8. The preparation equipment of the composite water treatment agent according to claim 7, characterized in that: The circular chassis is connected to a driving shaft through a connecting structure, and the components therebetween are rotationally positioned.

9. The preparation equipment of the composite water treatment agent according to claim 8, characterized in that: The connection structure comprises a slot arranged on one of the matching pieces and an inserting block inserted into the slot and arranged on the other matching piece.

10. The preparation equipment of the composite water treatment agent according to claim 7, characterized in that: The blocking structure is an arc-shaped blocking plate, and its curvature corresponds to the curvature of the outer edge of the rotating partition plate.

11. The preparation equipment of the composite water treatment agent according to claim 7, characterized in that: A bulk material filter screen is arranged below the rotating partition plate. The bulk material filter screen is connected to the rotating partition plate through an elastic member and is driven by a vibration driving structure to vibrate.

12. The preparation equipment of the composite water treatment agent according to claim 11, characterized in that: The vibration driving structure comprises a plurality of driving protrusions arranged on the inner wall of the reactor body and a supporting member arranged on the bulk material filter screen and matched with the driving protrusions.

13. The preparation equipment of the composite water treatment agent according to claim 12, characterized in that: The supporting member is an elastic rod.

Images