Assistant adding device

Abstract

The utility model relates to the technical field of ionic membrane caustic soda production, in particular to an additive adding device, which comprises a sugar solution preparation tank, a sugar solution buffer tank, a sugar pump and an additive adding port, a second compressed air pipeline is communicated between the sugar solution preparation tank and a first compressed air pipeline, and the sugar solution preparation tank is communicated with a first condensed water conveying pipeline. A first sugar solution conveying pipeline is communicated between the sugar solution preparation tank and the sugar solution buffer tank, the preconcentrator is communicated with a first alkali liquor conveying pipeline, a second sugar solution conveying pipeline is communicated between the first alkali liquor conveying pipeline and the sugar solution buffer tank, and a secondary gas pipeline is communicated between the preconcentrator and the final concentrator. The device is reasonable and compact in structure and convenient to use, remarkably improves the speed of a production process, reduces the production time, reduces the labor intensity of personnel and ensures the product quality by changing the structural form and position of auxiliary preparation equipment and an auxiliary adding mode, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of ion membrane caustic soda production, in particular to an auxiliary agent adding device. Background Art

[0002] In the production of ion-exchange membrane caustic soda, due to the increase of side reactions in the electrolysis process and the increase of chlorate concentration in the electrolyte, the subsequent cooking equipment of caustic soda production is severely corroded. In the process of solid caustic soda boiling, when the boiling temperature rises to 270℃ to 380℃, sodium chlorate decomposes. The decomposition of sodium chlorate increases the content of sodium chloride in the product and reduces the relative content of sodium hydroxide, causing the quality of solid caustic soda to decline. In addition, sodium chlorate also corrodes the boiling pot and intensifies the boiling pot phenomenon. Chlorate also directly affects the product quality.

[0003] At present, white sugar is usually added to eliminate chlorate in alkali solution during domestic solid alkali production. White sugar is prepared into a 5% sugar solution before being added to the alkali system. According to the common design of domestic solid alkali equipment, the sugar solution preparation tank is set on the second or third floor of the solid alkali production equipment. During the preparation of sugar solution, white sugar needs to be transported manually or hoisted to the second or third floor by a crane. According to the solid alkali production capacity of 600,000 tons, about 200kg of white sugar is consumed every day, which has high labor intensity. This process requires frequent use of cranes, high operation risks, and low operation efficiency.

[0004] Therefore, based on the shortcomings of the above-mentioned white sugar additive adding device, it is very necessary to develop an additive adding device. Summary of the invention

[0005] The utility model provides an auxiliary agent adding device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of high labor intensity, high operation risk and low operation efficiency in the existing sugar solution preparation process.

[0006] The technical scheme of the utility model is achieved through the following measures: an auxiliary agent adding device, comprising a sugar liquid preparation tank, a sugar liquid buffer tank, a sugar pump, a pre-concentrator, an alkali liquid delivery pump, and a final concentrator, wherein the first feed end of the sugar liquid preparation tank is fixedly connected with an auxiliary agent adding pipeline, the second inlet of the sugar liquid preparation tank is fixedly connected with a first compressed air pipeline, the third inlet of the sugar liquid preparation tank and the first compressed air pipeline are fixedly connected with a second compressed air pipeline, the fourth inlet of the sugar liquid preparation tank is fixedly connected with a first condensed water delivery pipeline, the discharge end of the sugar liquid preparation tank and the first feed end of the sugar liquid buffer tank are fixedly connected with a first sugar liquid delivery pipeline, the first feed end of the pre-concentrator is fixedly connected with a first alkali liquid delivery pipeline, the first alkali liquid delivery pipeline is fixedly connected with a second sugar liquid delivery pipeline between the first alkali liquid delivery pipeline and the discharge end of the sugar liquid buffer tank, the second feed end of the pre-concentrator is fixedly connected with a secondary air pipeline between the second feed end of the pre-concentrator and the discharge end of the final concentrator, and the second alkali liquid delivery pipeline is fixedly connected between the discharge end of the pre-concentrator and the feed end of the final concentrator.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] A sugar pump is fixedly installed on the second sugar solution delivery pipeline, and an alkali solution delivery pump is fixedly installed on the second alkali solution delivery pipeline.

[0009] A second condensed water delivery pipeline is fixedly connected between the second feed end of the sugar solution buffer tank and the first condensed water delivery pipeline.

[0010] A funnel-shaped additive adding port is fixedly arranged at the inlet of the additive adding pipeline.

[0011] The auxiliary agent adding device is provided with a remote pressure gauge and a first remote liquid level gauge fixedly arranged on the sugar solution preparation tank, and a second remote liquid level gauge fixedly arranged on the sugar solution buffer tank.

[0012] A first automatic control valve is fixedly installed on the first condensate water delivery pipeline between the sugar liquid preparation tank and the second condensate water delivery pipeline, a second automatic control valve is fixedly installed on the first sugar liquid delivery pipeline, a third automatic control valve is fixedly installed on the first compressed air pipeline between the sugar liquid preparation tank and the second compressed air pipeline, and a fourth automatic control valve is fixedly installed on the second compressed air pipeline; an interlock is arranged between the first remote liquid level gauge and the first automatic control valve, an interlock is arranged between the second remote liquid level gauge and the second automatic control valve, and an interlock is arranged between the remote pressure gauge and the third automatic control valve.

[0013] The device also includes a DCS controller, and the sugar pump, alkali solution delivery pump, first remote liquid level gauge, second remote liquid level gauge, first automatic control valve, second automatic control valve, remote pressure gauge, third automatic control valve, and fourth automatic control valve are all electrically connected to the DCS controller.

[0014] The utility model has a reasonable and compact structure and is easy to use. It achieves the purpose of device optimization by changing the structural form and position of the equipment and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0016] Attached Figure 1 The codes are as follows: 1 is the sugar solution preparation tank, 2 is the sugar solution buffer tank, 3 is the sugar pump, 4 is the pre-concentrator, 5 is the alkali solution delivery pump, 6 is the final concentrator, 7 is the fourth automatic control valve, 8 is the first compressed air pipeline, 9 is the second compressed air pipeline, 10 is the first condensate delivery pipeline, 11 is the second condensate delivery pipeline, 12 is the first sugar solution delivery pipeline, 13 is the second sugar solution delivery pipeline, 14 is the first alkali solution delivery pipeline, 15 is the second alkali solution delivery pipeline, 16 is the auxiliary agent addition port, 17 is the auxiliary agent addition pipeline, 18 is the first remote liquid level gauge, 19 is the second remote liquid level gauge, 20 is the first automatic control valve, 21 is the second automatic control valve, 22 is the remote pressure gauge, 23 is the secondary air pipeline, and 24 is the third automatic control valve. DETAILED DESCRIPTION

[0017] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0018] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art. For example, the sugar pump is a known and used reciprocating piston metering pump.

[0019] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0020] The present invention is further described below in conjunction with the embodiments and drawings:

[0021] Embodiment 1: As attached Figure 1As shown, the auxiliary agent adding device includes a sugar solution preparation tank 1, a sugar solution buffer tank 2, a sugar pump 3, a pre-concentrator 4, an alkali solution delivery pump 5, and a final concentrator 6. The first inlet of the sugar solution preparation tank 1 is fixedly connected to an auxiliary agent adding pipeline 17, the second inlet of the sugar solution preparation tank 1 is fixedly connected to a first compressed air pipeline 8, the third inlet of the sugar solution preparation tank 1 and the first compressed air pipeline 8 are fixedly connected to a second compressed air pipeline 9, the fourth inlet of the sugar solution preparation tank 1 is fixedly connected to a first condensed water delivery pipeline 10, and the sugar solution preparation tank A first sugar solution delivery pipeline 12 is fixedly connected between the discharge end of the preconcentrator 1 and the first feed end of the sugar solution buffer tank 2, a first alkali solution delivery pipeline 14 is fixedly connected to the first feed end of the preconcentrator 4, a second sugar solution delivery pipeline 13 is fixedly connected between the first alkali solution delivery pipeline 14 and the discharge end of the sugar solution buffer tank 2, a secondary gas pipeline 23 is fixedly connected between the second feed end of the preconcentrator 4 and the discharge end of the final concentrator 6, and a second alkali solution delivery pipeline 15 is fixedly connected between the discharge end of the preconcentrator 4 and the feed end of the final concentrator 6. Among them, the sugar solution preparation tank 1 is located on the first floor of the production device, and the sugar solution buffer tank 2 and the sugar pump 3 are both located on the second floor of the production device.

[0022] The above-mentioned additive adding device can be further optimized and / or improved according to actual needs:

[0023] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 As shown, a sugar pump 3 is fixedly installed on the second sugar solution delivery pipeline 13 , and an alkali solution delivery pump 5 is fixedly installed on the second alkali solution delivery pipeline 15 .

[0024] Embodiment 3: The difference between Embodiment 1 and Embodiment 2 is as follows: Figure 1 As shown, a second condensate delivery pipeline 11 is fixedly connected between the second feed end of the sugar solution buffer tank 2 and the first condensate delivery pipeline 10 .

[0025] As required, the sugar solution buffer tank 2 also serves as a backup tank for sugar solution preparation and is connected to a second condensed water delivery pipeline 11 . When the sugar solution preparation tank 1 fails and cannot operate, the sugar solution buffer tank 2 is used for sugar solution preparation.

[0026] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 As shown, a funnel-shaped auxiliary agent addition port 16 is fixedly provided at the inlet of the auxiliary agent addition pipeline 17 .

[0027] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 1 As shown, a remote pressure gauge 22 and a first remote liquid level gauge 18 are fixedly installed on the sugar solution preparation tank 1 , and a second remote liquid level gauge 19 is fixedly installed on the sugar solution buffer tank 2 .

[0028] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 1 As shown, a first automatic control valve 20 is fixedly provided on the first condensed water delivery pipeline 10 between the sugar liquid preparation tank 1 and the second condensed water delivery pipeline 11, and a second automatic control valve 21 is fixedly provided on the first sugar liquid delivery pipeline 12. A third automatic control valve 24 is fixedly provided on the first compressed air pipeline 8 between the sugar liquid preparation tank 1 and the second compressed air pipeline 9, and a fourth automatic control valve 7 is fixedly provided on the second compressed air pipeline 9; an interlock is provided between the first remote liquid level gauge 18 and the first automatic control valve 20, an interlock is provided between the second remote liquid level gauge 19 and the second automatic control valve 21, and an interlock is provided between the remote pressure gauge 22 and the third automatic control valve 24.

[0029] As needed, when the auxiliary agent solution begins to be prepared, the fourth automatic control valve 7 is opened to introduce compressed air from the bottom of the sugar solution preparation tank 1 for stirring; when the sugar solution in the sugar solution preparation tank 1 needs to be transported to the sugar solution buffer tank 2 via the first sugar solution delivery pipeline 12, the amount of compressed air added to the sugar solution preparation tank 1 is controlled by the third automatic control valve 24 to ensure that the remote pressure gauge 22 displays a pressure that can pressurize the sugar solution from the sugar solution preparation tank 1 to the sugar solution buffer tank 2.

[0030] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 1 As shown, the device also includes a DCS controller, and the sugar pump 3, the alkali solution delivery pump 5, the first remote liquid level gauge 18, the second remote liquid level gauge 19, the first automatic control valve 20, the second automatic control valve 21, the remote pressure gauge 22, the third automatic control valve 24, and the fourth automatic control valve 7 are all electrically connected to the DCS controller.

[0031] As required, the pipelines and equipment of the auxiliary agent adding device can also be provided with conventional valves, flow meters and pressure gauges known and used in the art according to production requirements.

[0032] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0033] The use process of the embodiment of the utility model is as follows: first, add white sugar to the sugar solution preparation tank 1 through the auxiliary agent addition port 16, add condensed water through the first condensed water delivery pipeline 10 according to the concentration of the sugar solution, and while preparing the sugar solution, open the fourth automatic control valve 7 to pass compressed air into the sugar solution preparation tank 1 to stir the sugar solution and increase the dissolution rate of the white sugar; then, when the second remote liquid level gauge 19 shows that the liquid level is low, open the second automatic control valve 21 to deliver the qualified sugar solution to the sugar solution buffer tank 2 through the first sugar solution delivery pipeline 12; finally, deliver it to the first alkali solution delivery pipeline 14 by the sugar pump 3, to ensure that the chlorate content in the equipment pipelines such as the pre-concentrator 4, the second alkali solution delivery pipeline 15, the alkali solution delivery pump 5, and the final concentrator 6 in subsequent production remains relatively stable.

Claims

1. An auxiliary agent adding device, characterized in that The invention comprises a sugar liquid preparation tank, a sugar liquid buffer tank, a sugar pump, a pre-concentrator, an alkali liquid delivery pump and a final concentrator. The first feed end of the sugar liquid preparation tank is fixedly connected with an auxiliary agent adding pipeline, the second inlet of the sugar liquid preparation tank is fixedly connected with a first compressed air pipeline, the third inlet of the sugar liquid preparation tank and the first compressed air pipeline are fixedly connected with a second compressed air pipeline, the fourth inlet of the sugar liquid preparation tank is fixedly connected with a first condensed water delivery pipeline, the discharge end of the sugar liquid preparation tank and the first feed end of the sugar liquid buffer tank are fixedly connected with a first sugar liquid delivery pipeline, the first feed end of the pre-concentrator is fixedly connected with a first alkali liquid delivery pipeline, the first alkali liquid delivery pipeline and the discharge end of the sugar liquid buffer tank are fixedly connected with a second sugar liquid delivery pipeline, the second feed end of the pre-concentrator and the discharge end of the final concentrator are fixedly connected with a secondary air pipeline, and the discharge end of the pre-concentrator and the feed end of the final concentrator are fixedly connected with a second alkali liquid delivery pipeline.

2. The auxiliary agent adding device according to claim 1, characterized in that A sugar pump is fixedly installed on the second sugar solution delivery pipeline, and an alkali solution delivery pump is fixedly installed on the second alkali solution delivery pipeline.

3. The auxiliary agent adding device according to claim 1 or 2, characterized in that A second condensed water delivery pipeline is fixedly connected between the second feed end of the sugar solution buffer tank and the first condensed water delivery pipeline.

4. The auxiliary agent adding device according to claim 1 or 2, characterized in that The inlet of the additive adding pipeline is fixedly connected with a funnel-shaped additive adding port.

5. The auxiliary agent adding device according to claim 3, characterized in that A funnel-shaped additive adding port is fixedly arranged at the inlet of the additive adding pipeline.

6. The auxiliary agent adding device according to claim 1, 2 or 5, characterized in that A remote pressure gauge and a first remote liquid level gauge are fixedly installed on the sugar solution preparation tank, and a second remote liquid level gauge is fixedly installed on the sugar solution buffer tank.

7. The auxiliary agent adding device according to claim 3, characterized in that A remote pressure gauge and a first remote liquid level gauge are fixedly installed on the sugar solution preparation tank, and a second remote liquid level gauge is fixedly installed on the sugar solution buffer tank.

8. The auxiliary agent adding device according to claim 4, characterized in that A remote pressure gauge and a first remote liquid level gauge are fixedly installed on the sugar solution preparation tank, and a second remote liquid level gauge is fixedly installed on the sugar solution buffer tank.

9. The auxiliary agent adding device according to claim 7 or 8, characterized in that A first automatic control valve is fixedly installed on the first condensate water delivery pipeline between the sugar liquid preparation tank and the second condensate water delivery pipeline, a second automatic control valve is fixedly installed on the first sugar liquid delivery pipeline, a third automatic control valve is fixedly installed on the first compressed air pipeline between the sugar liquid preparation tank and the second compressed air pipeline, a fourth automatic control valve is fixedly installed on the second compressed air pipeline, an interlock is arranged between the first remote liquid level gauge and the first automatic control valve, an interlock is arranged between the second remote liquid level gauge and the second automatic control valve, and an interlock is arranged between the remote pressure gauge and the third automatic control valve.

10. The auxiliary agent adding device according to claim 9, characterized in that It also includes a DCS controller, and the sugar pump, the alkali solution delivery pump, the first remote liquid level gauge, the second remote liquid level gauge, the first automatic control valve, the second automatic control valve, the remote pressure gauge, the third automatic control valve, and the fourth automatic control valve are all electrically connected to the DCS controller.

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