CN-121974415-A - Device and process for deeply purifying and recycling wastewater in potassium perchlorate preparation process

CN121974415ACN 121974415 ACN121974415 ACN 121974415ACN-121974415-A

Abstract

The invention discloses a device and a process for deeply purifying and recycling wastewater in a potassium perchlorate preparation process, which belong to the technical field of devices and processes for preparing potassium perchlorate and comprise an electrolyte tank and a suspension separation mechanism, wherein the suspension separation mechanism comprises a first tank body, an air cylinder is arranged at the bottom of the first tank body, a piston rod on the air cylinder extends to a push rod in the first tank body, a first inclined plate and a second inclined plate are respectively and fixedly arranged at two ends of the push rod, an ejector rod is integrally formed at the top of the first inclined plate, a filter plate arranged on the side wall of the first tank body is arranged above the ejector rod, a filter hole on the filter plate is connected with the ejector rod in an adapting mode, and the filter plate and the first inclined plate are arranged in parallel. The invention can solve the technical problems that suspended matters with different sizes in the wastewater cannot be subjected to corresponding separation treatment, crystals can be obtained only by corresponding manual cleaning work in the process of evaporating and crystallizing the wastewater, and the working efficiency is reduced.

Inventors

ZHANG RENNAN
HUANG JUN
LIU DAN
TU XUCHENG
HUANG WEILIANG
XU FENGBIN

Assignees

江西永宁科技有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260203

Claims (10)

1. Waste water deep purification recovery unit of potassium perchlorate preparation process, its characterized in that includes: An electrolyte tank (1); The suspension separation mechanism (2), the suspension separation mechanism (2) comprises a first box body (3), an air cylinder (4) is installed at the bottom of the first box body (3), a piston rod on the air cylinder (4) extends to a pushing rod (5) in the first box body (3), a first inclined plate (6) and a second inclined plate (7) are respectively fixedly installed at two ends of the pushing rod (5), and a push rod (8) is integrally formed at the top of the first inclined plate (6); The utility model discloses a filter plate, including ejector pin (8), filter plate (9), filter plate (7) are equipped with filter plate (9) on arranging first box (3) lateral wall in above ejector pin (8), filter hole and ejector pin (8) adaptation on filter plate (9) are connected, and filter plate (9) keep parallel arrangement with first hang plate (6), filter plate (9) one end fixed mounting has baffle (10) of contradicting with second hang plate (7) activity, and baffle (10) direction of height is equipped with the spout that is connected with second hang plate (7), second hang plate (7) one end is equipped with first collection box (11) of arranging in on first box (3) through the opening.
2. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 1, wherein the electrolyte tank (1) and the first tank body (3) are connected through a guide pipe fixed on the first pump body (12), the pushing rods (5) are fixedly connected through a cross beam, a gear plate (13) penetrating through the filter plate (9) is fixedly arranged on one side of the top end of the first inclined plate (6), and one end of the gear plate (13) is connected with a guide groove arranged in the shell (14).
3. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 2, wherein a rotating gear (16) with a ratchet groove (15) is meshed with the outer wall of the gear plate (13), a rotary table (17) is arranged in the ratchet groove (15), a pawl (18) movably attached to the ratchet groove (15) is rotationally connected to the rotary table (17), and rotating grooves arranged on the shell (14) are formed in the edges of the outer walls of the rotating gear (16) and the rotary table (17).
4. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 3, wherein a torsion spring (19) matched with the rotary table (17) is arranged at the center of the pawl (18), a first rotating shaft (20) at the center of the rotary table (17) penetrates through the shell (14) and is in transmission connection with a second rotating shaft (21) through a conveying belt (22), scraping plates (23) which are annularly distributed are connected to the first rotating shaft (20) and the second rotating shaft (21), and a second collecting box (24) arranged on the outer wall of the first box body (3) is in transmission connection with one end of each scraping plate (23).
5. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 4, wherein the shell (14) is fixed on the outer wall of the first box body (3) in a detachable manner, and the center of the second rotating shaft (21) is fixed on the side wall of the first box body (3) through a bearing.
6. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 5, further comprising an evaporation crystallization mechanism (25), wherein the evaporation crystallization mechanism (25) comprises a second box body (26), the second box body (26) and the first box body (3) are connected through a guide pipe fixed on a second pump body (27), a driving motor (43) is connected to a bottom support of the second box body (26), an output shaft of the driving motor (43) extends to a pinion (28), and a large gear (29) is meshed and driven on the outer wall of the pinion (28).
7. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 6, wherein a first reciprocating screw (30) arranged in the second box body (26) is connected to the top of a central shaft of the large gear (29), the top of the first reciprocating screw (30) is arranged on a second reciprocating screw (32) through a third rotating shaft (31), a first sliding block (33) and a second sliding block (34) which move in the same direction are correspondingly and spirally driven on the first reciprocating screw (30) and the second reciprocating screw (32), a heat conducting plate (35) attached to the side wall of the second box body (26) is arranged on the first sliding block (33), and a heater (36) is arranged between the heat conducting plate (35) and the bottom of the inner wall of the second box body (26).
8. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 7, wherein two ends of the second sliding block (34) are connected with the moving block (37) through a swinging rod (38), a shielding plate (39) connected to the inner wall of the second box body (26) is movably attached to the top of the moving block (37), a vent hole (40) connected with the moving block (37) is formed in the shielding plate (39), a movable groove connected with the second reciprocating screw (32) is formed in the center of the shielding plate (39), and a stirring rod (41) which is movably abutted to the top of the heat conducting plate (35) is fixedly connected to the outer wall of the third rotating shaft (31) through a bending rod.
9. The device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 8, wherein two ends of the swinging rod (38) are respectively arranged on the second sliding block (34) and the moving block (37) in a rotating connection mode, one side of the top end of the heat conducting plate (35) is provided with a side plate (42) through a bracket, and the side plate (42) is movably abutted to a liquid guiding groove of the second box body (26) to be closed or opened.
10. The process for deeply purifying and recycling wastewater in the potassium perchlorate preparation process is applied to the device for deeply purifying and recycling wastewater in the potassium perchlorate preparation process according to claim 9, and is characterized by comprising the following steps: S1.1, electrolyzing a sodium chlorate solution into sodium perchlorate in an electrolyte tank (1), carrying out double decomposition reaction with potassium chloride to generate potassium perchlorate, and sequentially feeding mother liquor generated by electrolysis into a suspension separation mechanism (2) and an evaporation crystallization mechanism (25) for recycling; s1.2, the suspension separation mechanism (2) is matched with the filter plate (9) and the second inclined plate (7) under the pushing action of the air cylinder (4), so that suspended particles with different sizes can be classified by the first collecting box (11) and the second collecting box (24); S1.3, the evaporation crystallization mechanism (25) is used for evaporating and crystallizing mother liquor under the action of the driving motor (43) and the heating effect of the heater (36), the internal temperature of the second box body (26) is regulated in a compression work-doing mode, and the crystallized potassium chlorate is prevented from being attached to the heat conducting plate (35), so that the recycling of resources is realized.

Description

Device and process for deeply purifying and recycling wastewater in potassium perchlorate preparation process Technical Field The invention belongs to the technical field of potassium perchlorate preparation devices and processes, and particularly relates to a device and a process for deeply purifying and recycling wastewater in a potassium perchlorate preparation process. Background The production process of potassium perchlorate mainly comprises a joint production method, wherein the joint production method is divided into two methods which take potassium chloride as a raw material and potassium chlorate as a raw material. The following is a detailed description of the production process: The combined production method refers to a sodium chlorate production line matched with the potassium perchlorate in scale under the premise of relative advantages of electric resources of enterprises. The process is an improvement on a potassium chloride double decomposition method, comprises three working procedures of sodium chlorate electrolysis, sodium perchlorate electrolysis and sodium perchlorate and potassium chloride double decomposition, improves the defects of traditional production, enables sodium chloride-containing mother liquor to return to sodium chlorate electrolysis for reuse, forms closed cycle, and meets the production requirements of zero emission, safety and environmental protection. The method takes potassium chloride as raw material to produce potassium perchlorate, and the proportion of the method is 90 percent of the total production amount of the potassium perchlorate. The production process is simple and the production cost is low. The process flow comprises dissolving and refining sodium chloride, removing impurities, electrolyzing sodium chloride solution to generate sodium chlorate, Further electrolyzing sodium chlorate to generate sodium perchlorate, performing double decomposition reaction on the sodium perchlorate and potassium chloride to generate potassium perchlorate and sodium chloride, and centrifugally separating to obtain a product potassium perchlorate, wherein mother liquor is recycled. The treatment of potassium chloride high salt waste water is crucial, and its core aim at subtracts dirty and resource recovery, and waste water recovery in-process, suspended solid in the waste water is different in size, and great and less particulate matter can not accomplish the separation processing of corresponding size to influence subsequent purification work, in addition, waste water in the evaporation crystallization process, often can adhere to on the supporting body of heating, need corresponding manual cleaning work just can obtain collecting, has reduced work efficiency, also influence the result of use of device. Disclosure of Invention The invention aims to provide a device and a process for deeply purifying and recycling wastewater in a potassium perchlorate preparation process, which are used for solving the technical problems that suspended matters in the wastewater are different in size, larger and smaller particles cannot be separated into corresponding sizes, crystals can be obtained only by corresponding manual cleaning work in an evaporation crystallization process of the wastewater, and the working efficiency is reduced. In order to achieve the above purpose, the present invention adopts the following technical scheme: waste water deep purification recovery unit of potassium perchlorate preparation process includes: An electrolyte tank; The suspension separation mechanism comprises a first box body, a cylinder is arranged at the bottom of the first box body, a piston rod on the cylinder extends to a pushing rod in the first box body, a first inclined plate and a second inclined plate are respectively and fixedly arranged at two ends of the pushing rod, and a push rod is integrally formed at the top of the first inclined plate; The filter plate is characterized in that a filter plate arranged on the side wall of the first box body is arranged above the ejector rod, a filter hole on the filter plate is connected with the ejector rod in an adaptive mode, the filter plate and the first inclined plate are kept in parallel, a partition plate which is movably abutted to the second inclined plate is fixedly arranged at one end of the filter plate, a sliding groove connected with the second inclined plate is arranged in the height direction of the partition plate, and a first collecting box arranged on the first box body is arranged at one end of the second inclined plate through an opening. Further, the electrolyte tank is connected with the first tank body through a guide pipe fixed on the first pump body, the pushing rods are fixedly connected through a cross beam, a gear plate penetrating through the filter plate is fixedly arranged on one side of the top end of the first inclined plate, and one end of the gear plate is connected with a guide groove arranged in the shell. Fur