阅读说明：本技术 一种带有高效冷却系统的电解装置 (Electrolysis device with efficient cooling system ) 是由 王兆兵 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种带有高效冷却系统的电解装置,包括多个串联的电解单元和端面极板,隔离板,压板,拉紧螺栓,每个电解单元包括多片并联的阴极板和阳极板,在相邻的2个电解单元之间或单个电解单元之中,设置有多个冷却器,冷却器主要由前板,后板,环形立板,导液口,冷却水进出口管,导电条构成。使用时,冷却器即可全部当作阴极板或部分当作阴极板应用,实现了电解过程中的实时冷却,冷却效果好,能有效实现温度的平稳控制,使电流效率得到提高,使有效氯的单耗(直流电耗、盐耗)进一步降低。(The invention discloses an electrolysis device with an efficient cooling system, which comprises a plurality of electrolysis units connected in series, an end face polar plate, a partition plate, a pressing plate and a tensioning bolt, wherein each electrolysis unit comprises a plurality of cathode plates and anode plates connected in parallel, a plurality of coolers are arranged between every two adjacent electrolysis units or in a single electrolysis unit, and each cooler mainly comprises a front plate, a rear plate, an annular vertical plate, a liquid guide port, a cooling water inlet and outlet pipe and a conductive strip. When the electrolytic cell is used, the cooler can be completely used as a cathode plate or partially used as the cathode plate, so that the real-time cooling in the electrolytic process is realized, the cooling effect is good, the stable control of the temperature can be effectively realized, the current efficiency is improved, and the unit consumption (direct current power consumption and salt consumption) of the effective chlorine is further reduced.)

1. The utility model provides an electrolytic device with high-efficient cooling system, includes a plurality of electrolysis unit and the terminal surface polar plate 14 of establishing ties, division board 15, clamp plate 16, tie bolt 17, and every electrolysis unit includes the parallelly connected negative plate 13 of multi-disc and positive plate 12, its characterized in that: a plurality of coolers are arranged between every two adjacent electrolysis units or in a single electrolysis unit, and each cooler mainly comprises a front plate 1, a rear plate 2, an annular vertical plate 3, a liquid guide port 4, cooling water inlet and outlet pipes 5 and 6 and a conductive strip 7; the periphery edges of the front plate 1 and the rear plate 2 are provided with the same sealing grooves 9, the front plate 1 and the rear plate 2 are overlapped together in the same direction according to the sealing grooves 9 and keep a 15-40 mm gap in parallel, the annular vertical plate 3 seals the gap along the outer edges of the sealing grooves 9 of the front plate 1 and the rear plate 2 and is welded and sealed with each other to form a cooling water flowing chamber, and a plurality of water baffling baffle strips 10 are arranged in the chamber; an annular vertical plate 3 at one end of the cavity is provided with a hole and is connected with cooling water inlet and outlet pipes 5 and 6; through holes are formed in the plate surfaces of the front plate 1 and the rear plate 2 at one end or two ends of the chamber, short pipes penetrate into the through holes and are welded with the plate surfaces of the front plate 1 and the rear plate 2 in a flush and sealed mode, and salt water flows into the short pipes to form liquid guide ports 4; the conductive strips 7 are connected to one side of the rear plate 2.

2. The electrolyzer with the high efficiency cooling system as claimed in claim 1, wherein the length of the back plate 2 is set to 200-1200 mm, the width is set to 200-800 mm, the thickness is set to 1-3 mm, the length direction of the front plate 1 is flush with the lower edge of the mounting guide hole 8 of the back plate 2, the width and the thickness of the front plate are consistent with those of the back plate 2, the back plate 2 is consistent with the size of the electrolytic cell polar plate and has consistent mounting guide holes and sealing grooves, the electrolytic cell polar plate is provided with the liquid guide holes 20, and the opening positions of the liquid guide holes 20 are adapted to the liquid guide port 4 of the cooler according to the combination manner of the polar plates.

3. The electrolyzer with high efficiency cooling system according to claim 1 characterized in that the material of the cooler is titanium or nickel alloy or stainless steel.

4. The electrolyzer with high efficiency cooling system according to claim 1 characterized in that the conductive strips 7 are titanium copper composite strips or nickel copper composite strips or stainless steel and copper composite strips.

5. The electrolyzer with high efficiency cooling system according to claim 1 characterized in that the cooling water is the circulating water of a cold and hot water machine or the circulating pool water of a cold water tower.

6. The electrolyzer with high efficiency cooling system as claimed in claims 1 and 2, characterized in that the cooler is used as the cathode plate 13, the upper and lower ends of the cooler are provided with liquid guide ports 4, the electrolyzer is combined in the following way: two ends of the electrolysis unit are respectively provided with an end surface polar plate 14, a separation plate 15 and a pressing plate 16; saline water inlet and outlet pipes 18 and 19 penetrate through the partition plate 15 and the pressure plate 16 to be connected with the end face pole plate 14, coolers and anode plates 12 in the electrolysis unit are alternately arranged, a sealing gasket 11 is placed in the sealing groove 9, then the whole is fastened together by using a tensioning bolt 17, a pole plate chamber for passing saline water is formed between the anode plate 12 in the electrolysis unit and the front plate 1 or the rear plate 2, and cooling water is passed through an inner cavity between the front plate 1 and the rear plate 2; the flow mode of the brine is as follows: the brine is shunted to enter the lower end of the polar plate cavity and then flows to the outlet from the upper end of the polar plate cavity, and meanwhile, the brine is cooled by indirect heat exchange of cooling water in the inner cavity of the cooler.

7. An electrolysis apparatus with efficient cooling system according to claim 1 and 2, wherein the cooler is partially used as a cathode plate 13, only one end of the cooler is provided with a liquid guide port 4, and the electrolysis apparatus is combined in the following way: the two ends of the electrolysis device are respectively provided with an end face polar plate 14, a partition plate 15 and a pressure plate 16, brine inlet and outlet pipes 18 and 19 penetrate through the partition plate 15 and the pressure plate 16 to be connected with the end face polar plate 14, 2-10 pieces of negative plates 13 and positive plates 12 in an electrolysis unit are alternately arranged, then a cooler is placed, 2-10 pieces of negative plates 13 and positive plates 12 are arranged, then a cooler is placed, then polar plates are arranged, the alternating arrangement is carried out, 2-20 coolers are placed in an electrolysis device, a sealing gasket 11 is placed in a sealing groove 9, then the whole is fastened together by a tensioning bolt 17, and a polar plate chamber for passing brine is formed between the polar plates of the electrolysis unit, between the polar plate and the front plate 1 or the rear plate 2; cooling water flows through an inner cavity between the front plate 1 and the rear plate 2; the flow mode of the brine is as follows: the brine is divided into chambers of the polar plates, then flows to the rear plate 2 of the cooler, is cooled when passing through the rear plate 2 and the front plate 1, and then enters the next group of polar plates.

Technical Field

The invention relates to electrolytic water treatment equipment, in particular to an electrolytic device for preparing sodium hypochlorite on site.

Background

When the sodium hypochlorite generator is used for preparing sodium hypochlorite on site, direct current is applied between electrode plates to generate electrolytic reaction to generate a large amount of heat, which is actually expressed in that the temperature of brine at the inlet of an electrolytic cell is far lower than the temperature of brine at the outlet of the electrolytic cell, namely electrolytic temperature rise, the electrolytic temperature rise is generally required to be controlled within 15 ℃ in an industrial standard, the electrolytic temperature rise is also an important index for measuring the performance of the sodium hypochlorite generator, and factors influencing the electrolytic temperature rise are many, such as the structure, the electrode plate quality, the electrode plate layout and the like of the sodium hypochlorite generator.

The sodium hypochlorite generator has the best performance, various process parameters are well controlled during operation, the temperature of the electrolytic cell is stably kept between 25 ℃ and 30 ℃, and the electrolysis temperature rise needs to be taken into consideration during actual operation. The existing methods for controlling the temperature of the electrolytic cell mainly comprise two methods:

firstly, a cooling titanium coil is arranged in an electrolytic cell, cooling water is introduced to carry away heat generated by electrolytic reaction through indirect heat exchange, the method has a great application in a single electrolytic cell with chlorine yield of less than 5kg/h, and the defects are as follows: the inside plate electrodes that are covered originally of electrolysis trough, the space is restricted, does not arrange cooling coil well, and in addition the distance is very close with between the plate electrode, and span between a plurality of electrolysis unit (utmost point group) that establish ties in the electrolysis trough, easily produce stray current, influence sodium hypochlorite generator current efficiency, can reach between 65 ~ 68% of current efficiency usually, produce per kilogram available chlorine's direct current power consumption 4.5kwh, salt consumes 3.8 kg.

Secondly, the brine is pre-cooled, for example, in patent 2017100211720 "sodium hypochlorite generator", softened water is first heat-exchanged by a cold and hot water machine to be controlled to a proper temperature, and then is mixed with strong brine to prepare dilute brine, the temperature of the brine is controlled to be 5-20 ℃ and then enters the electrolytic cell, and the temperature of the brine can also be controlled not to be higher than 20 ℃ and then enters the electrolytic cell in summer with high temperature. There are disadvantages: firstly, there is no way to adjust the temperature in the electrolytic cell in real time, the temperature in the electrolytic cell can not be maintained within the optimum range of 25-30 ℃, usually expressed as 20 ℃ of the inlet temperature of the electrolytic cell, the outlet temperature is 35 ℃, thereby affecting the current efficiency, the current efficiency which can be achieved is usually 68-72%, the direct current power consumption for producing each kilogram of available chlorine is 4.2kwh, the salt consumption is 3.2kg, and for most of the time, the environment temperature is within 5-20 ℃ controlled by the water cooling and heating machine, so that the initial temperature of the salt water is within 5-20 ℃, and the water cooling and heating machine can not effectively play a role.

Disclosure of Invention

Aiming at the problems, the invention solves the problems that the temperature of the electrolytic cell is efficiently kept within the optimal range value of 25-30 ℃, the temperature of each part in the electrolytic cell is more uniform and stable, and the temperature adjusting mode is more flexible and effective.

The technical scheme of the invention is as follows: the utility model provides an electrolytic device with high-efficient cooling system, includes a plurality of electrolysis unit and the terminal surface polar plate of establishing ties, division board, clamp plate, tie bolt, every electrolysis unit includes the parallelly connected negative plate and the anode plate of multi-disc, its characterized in that: a plurality of coolers are arranged between every two adjacent 2 electrolysis units or in a single electrolysis unit, and each cooler mainly comprises a front plate, a rear plate, an annular vertical plate, a liquid guide port, a cooling water inlet pipe, a cooling water outlet pipe and a conductive strip; the periphery edges of the front plate and the rear plate are provided with the same sealing grooves, the front plate and the rear plate are overlapped together in the same direction according to the sealing grooves and keep a 15-40 mm gap in parallel, the annular vertical plate seals the gap along the outer edges of the sealing grooves of the front plate and the rear plate and is welded and sealed with each other to form a cooling water flowing chamber, and a plurality of water baffling baffle strips are arranged in the chamber; an annular vertical plate at one end of the cavity is provided with a hole and is connected with a cooling water inlet and outlet pipe; through holes are formed in the plate surfaces of the front plate and the rear plate at one end or two ends of the chamber, the short pipe penetrates into the through holes and is welded with the plate surfaces of the front plate and the rear plate in a flush and sealed mode, and the short pipe flows salt water to form a liquid guide port; the conductive strips are connected to one side of the rear plate.

Further, the length of back plate sets up to 200 ~ 1200mm, and the width sets up to 200 ~ 800mm, and thickness sets up to 1 ~ 3mm, the length direction of front bezel and the lower edge of the installation guide hole of back plate flush, width and thickness are unanimous with the back plate, the back plate is unanimous with the electrolysis unit polar plate size to there are unanimous installation guide hole and sealed recess, be provided with the drain hole on the electrolysis unit polar plate, the open position in drain hole suits with the drain mouth of cooler according to the compound mode of polar plate.

Furthermore, the cooler is made of titanium or nickel alloy or stainless steel.

Furthermore, the conducting strips are titanium copper composite strips or nickel copper composite strips or stainless steel and copper composite strips.

Further, the cooling water is circulating water of a cold and hot water machine or circulating pool water of a water cooling tower.

Furthermore, the cooler is used as a cathode plate, the upper end and the lower end of the cooler are provided with liquid guide ports, and the combination mode of the electrolysis device is as follows: the two ends of the electrolysis device are respectively provided with an end face polar plate, a separation plate and a pressing plate. The brine inlet and outlet pipe penetrates through the isolation plate and the pressing plate and then is connected with the end face pole plate, the cooler and the anode plates in the electrolysis unit are alternately arranged, the sealing gasket is placed in the sealing groove, then the whole electrolysis unit is fastened together by using the tensioning bolt, a pole plate cavity formed between the anode plate and the front plate or the rear plate of the electrolysis unit is filled with brine, and an inner cavity between the front plate and the rear plate is filled with cooling water; the flow mode of the brine is as follows: the brine is shunted to enter the lower end of the polar plate cavity and then flows to the outlet from the upper end of the polar plate cavity, and meanwhile, the brine is cooled by indirect heat exchange of cooling water in the inner cavity of the cooler.

Furthermore, the cooler part is used as a cathode plate, only one end of the cooler is provided with a liquid guide port, and the combination mode of the electrolysis device is as follows: the two ends of the electrolysis device are respectively provided with an end face polar plate, a partition plate and a pressing plate, a saline water inlet and outlet pipe penetrates through the partition plate and the pressing plate to be connected with the end face polar plate, 2-10 cathode plates and anode plates in an electrolysis unit are alternately arranged, then a cooler is placed, 2-10 cathode plates and anode plates are arranged, then a cooler is placed, then polar plates are arranged, the like alternately, 2-20 coolers are placed in an electrolysis device, sealing gaskets are placed in sealing grooves, then the whole is fastened together by tensioning bolts, cooling water flows between the polar plates of the electrolysis unit, between the polar plates and a front plate or a rear plate to form a polar plate cavity, and cooling water flows through an inner cavity between the front plate and the rear plate; the flow mode of the brine is as follows: the brine is divided to enter the polar plate chamber, then converges to the rear plate of the cooler, is cooled when passing through the rear plate and the front plate, and then enters the next group of polar plates.

The invention has the advantages that:

(1) the front plate and the rear plate of the cooler are heat exchange surfaces and are combined to be equivalent to a negative plate, so that the real-time cooling of the electrolysis process is perfectly realized, the cooling effect is good, the stable control of the temperature can be effectively realized, and the current efficiency is improved.

(2) The liquid in the tank is cooled for a plurality of times in a sectional way, the temperature of the liquid in the tank is uniform, and the liquid can be stably controlled within the optimal reaction temperature, so that the unit consumption (direct current power consumption and salt consumption) for producing the effective chlorine is further reduced.

(3) In engineering application, a part of coolers are used for replacing a cathode plate, so that the engineering application effect is achieved, the manufacturing cost is reduced, the number of the coolers can be increased or decreased according to the engineering practice, the device does not need to be greatly changed, and the operation is convenient and fast.

Description of the drawings:

fig. 1 is a front view and a side view of a cooler.

Fig. 2 is a sectional view of the cooler a-a.

Fig. 3 is a sectional view of the cooler B-B.

FIG. 4 is a schematic view of an apparatus according to an embodiment.

FIG. 5 is a schematic view of another embodiment of the apparatus

Fourth, detailed description of the invention

The present invention will be described in detail with reference to the accompanying drawings.

An electrolysis device with an efficient cooling system, as shown in figures 1, 2, 3, 4 and 5, comprises a plurality of electrolysis units connected in series and end face plates 14, a separator 15, a pressure plate 16 and a tension bolt 17, wherein each electrolysis unit comprises a plurality of cathode plates 13 and anode plates 12 connected in parallel, and is characterized in that: a plurality of coolers are arranged between 2 adjacent electrolysis units or in a single electrolysis unit, and the coolers mainly comprise a front plate 1, a rear plate 2, an annular vertical plate 3, a liquid guide port 4, cooling water inlet and outlet pipes 5 and 6 and a conductive strip 7; the periphery of the front plate 1 and the periphery of the rear plate 2 are provided with the same sealing grooves 9, the front plate and the rear plate are overlapped together in the same direction according to the sealing grooves 9 and keep a 15-40 mm gap in parallel, the annular vertical plate 3 seals the gap along the outer edges of the sealing grooves 9 of the front plate 1 and the rear plate 2 and is welded and sealed with each other to form a cooling water flowing chamber, and a plurality of water baffling baffle strips 10 are arranged in the chamber; an annular vertical plate 3 at one end of the cavity is provided with a hole and is connected with cooling water inlet and outlet pipes 5 and 6; through holes are formed in the plate surfaces of the front plate 1 and the rear plate 2 at one end or two ends of the chamber, short pipes penetrate into the through holes and are welded with the plate surfaces of the front plate 1 and the rear plate 2 in a flush and sealed mode, and salt water flows through the short pipes to form liquid guide ports 4; the conductive strips 7 are connected to one side of the rear plate 2.

Further, the length of back plate 2 sets up to 200 ~ 1200mm, and the width sets up to 200 ~ 800mm, and thickness sets up to 1 ~ 3mm, the length direction of front plate 1 flushes with the lower edge of the installation guide hole 8 of back plate 2, width and thickness are unanimous with back plate 2, back plate 2 is unanimous with the electrolysis unit polar plate size to there are unanimous installation guide hole and sealed recess, be provided with drain hole 20 on the electrolysis unit polar plate, the drain hole 20 open position suits with the drain mouth 4 of cooler according to the compound mode of polar plate.

Furthermore, the cooler is made of titanium or nickel alloy or stainless steel.

Further, the conductive strips 7 are titanium copper composite strips or nickel copper composite strips or stainless steel and copper composite strips.

Further, the cooling water is circulating water of a cold and hot water machine or circulating pool water of a water cooling tower.

Further, the cooler is used as a cathode plate 13, the upper end and the lower end of the cooler are provided with liquid guide ports 4, and the combination mode of the electrolysis device is as follows: the two ends of the electrolyzer are respectively an end face polar plate 14, a separation plate 15 and a pressing plate 16. Brine inlet and outlet pipes 18 and 19 penetrate through the partition plate 15 and the pressing plate 16 and are connected with the end face pole plate 14, coolers and anode plates 12 in the electrolysis unit are alternately arranged, a sealing gasket 11 is placed in the sealing groove 9, then the whole is fastened together by using a tensioning bolt 17, a pole plate chamber for passing brine is formed between the anode plate 12 of the electrolysis unit and the front plate 1 or the rear plate 2, and cooling water is passed through an inner cavity between the front plate 1 and the rear plate 2; the flow mode of the brine is as follows: brine from the brine inlet pipe 18 is divided into the pole plate chamber from the liquid guide hole 20 and the liquid guide port 4, and then flows to the outlet from the upper end of the pole plate chamber, and meanwhile, the brine is cooled by indirect heat exchange of cooling water in the inner cavity of the cooler.

Furthermore, the cooler part is used as a cathode plate 13, only one end of the cooler is provided with a liquid guide port 4, and the combination mode of the electrolysis device is as follows: the two ends of the electrolysis device are respectively provided with an end face polar plate 14, a partition plate 15 and a pressure plate 16, brine inlet and outlet pipes 18 and 19 penetrate through the partition plate 15 and the pressure plate 16 to be connected with the end face polar plate 14, 2-10 pieces of negative plates 13 and positive plates 12 in an electrolysis unit are alternately arranged, then 2-10 pieces of negative plates 13 and positive plates 12 are arranged, then a cooler is arranged, then polar plates are arranged, the polar plates are alternately arranged, 2-20 coolers are arranged in one electrolysis device, a sealing gasket 11 is arranged in a sealing groove 9, then the whole is fastened together by a tensioning bolt 17, polar plate chambers for brine flowing are formed between the polar plates of the electrolysis unit, between the polar plates and the front plate 1 or the rear plate 2, and cooling water flows in an inner cavity between the front plate 1 and the rear plate 2; the flow mode of the brine is as follows: the brine is divided into chambers of the polar plates, then flows to the rear plate 2 of the cooler, is cooled when passing through the rear plate 2 and the front plate 1, and then enters the next group of polar plates.

The embodiment of figure 4 is the case of the cooler used as the cathode plate 13, 4 coolers are used as 4 cathode plates 13, 5 anode plates 12 (including 2 end plates 14 are used as the anode plates 12), and the two ends of the separator 15 and the pressing plate 16 are stressed on the pressing plate 16 by the tension bolt 17 and fastened together to form an electrolysis device, the positive pole of the direct current power supply is connected with the conducting bar of the 5 anode plates in parallel by the conducting wire, the negative pole of the direct current power supply is connected with the conducting bar 7 of the 4 coolers in parallel by the conducting wire, when the electrolysis is operated, the brine is shunted into the pole cavity between the anode plate 12 and the front plate 1 or the back plate 2 to generate electrochemical reaction, and simultaneously the brine is cooled by the heat exchange of the cooling water cavity between the front plate 1 and the back plate 2, because the side edges of the cooler and the pole plates are exposed, the temperature can be directly measured, and also corresponds to the brine temperature in the pole plate cavity, the temperature of the brine is controlled by adjusting the amount of cooling water, the reaction is always carried out under the optimal condition, sodium hypochlorite solution after the electrolytic reaction is converged to a brine outlet pipe 19 from a liquid guide hole 20 and an upper liquid guide port 4 on a polar plate chamber, and the direct current power consumption of each kilogram of effective chlorine is calculated to be 3.3kwh and the salt consumption is calculated to be 3.0 kg.

The embodiment of fig. 5 is the case where the cooler portion is used as the cathode plate 13, and there are 3 coolers used as 4 cathode plates 13, and 8 cathode plates and 12 anode plates (including 2 end plates 14 used as the anode plates 12) in the electrolysis apparatus composed of a single electrolysis unit. The electrolysis device assembly and power connection are the same as the case of fig. 4, except that during electrolysis operation, brine is shunted into the first group of polar plate chambers, then is converged to the back plate 2 of the first cooler, is cooled when being deflected to pass through the back plate 2 and the front plate 1 of the first cooler, is shunted into the second group of polar plate chambers, then is converged to the back plate 2 of the second cooler, is cooled when passing through the back plate 2 and the front plate 1 of the second cooler, is shunted into the third group of polar plate chambers, then is shunted to pass through the back plate 2 of the third cooler, is cooled again when being deflected to pass through the back plate 2 and the front plate 1 of the third cooler, is shunted into the fourth group of polar plate chambers, and finally is converged to the outlet pipe 19, brine is subjected to three times of segmental cooling and four times of segmental electrolysis, since the sides of the cooler and polar plates are exposed outside, the temperature can be directly measured, corresponding to the brine temperature in the polar plate chambers, the temperature of the brine is controlled by adjusting the amount of cooling water, the reaction is always carried out under the optimal condition to obtain sufficient electrolytic reaction, and after the test, the direct current power consumption of 3.5kwh and the salt consumption of 3.1kg of effective chlorine per kg of an electrolytic device are calculated.

The foregoing shows and describes the general principles and features of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.