A device for recovering hydrochloric acid and integrating hydrolysis polymerization of room temperature vulcanized silicone rubber

Abstract

The utility model relates to the technical field of chemical equipment discloses a room temperature vulcanized silicone rubber integration hydrolytic polymerization and hydrochloric acid recovery device, including integration reaction tower and hydrochloric acid absorption and analysis system, integration reaction tower includes tower body, and tower body is from top to bottom and is divided into three functional areas, is respectively: hydrolytic reaction area, polymerization reaction area and product separation area, and the product separation area is located the bottom of tower body and is installed with pump body, and the backwater pipe is connected between the pump body drainage end and the water inlet pipe, hydrochloric acid absorption and analysis system includes falling film absorber, hydrochloric acid analysis tower and high -purity hydrochloric acid absorption tower. The utility model has the advantages of high integration, investment and energy consumption saving, resource efficient utilization, product value maximization, environment friendly, product quality stability compared with prior art.

Claims

1. A room temperature vulcanizing silicone rubber integrated hydrolysis polymerization and hydrochloric acid recovery device, characterized in that: It includes an integrated reaction tower and a hydrochloric acid absorption and desorption system. The integrated reaction tower includes a tower body (1), which is divided into three functional zones from top to bottom: a hydrolysis reaction zone (2), a polymerization reaction zone (3), and a product separation zone (4). The hydrolysis reaction zone (2) is located at the top of the tower body (1) and is equipped with a feed pipe (8) and a water inlet pipe (9), and is equipped with a multi-stage distributor (10) inside; The polymerization reaction zone (3) is equipped with a heating inner liner (12), and a heating pipe (13) is installed between the heating inner liner (12) and the side wall of the tower body (1). A catalyst delivery pipe (11) passes through the side wall of the heating inner liner (12), and a stirring device (14) is installed at the bottom. The product separation zone (4) is located at the bottom of the tower body (1) and is equipped with an acid water phase discharge pipe (15) and a pump body (16). A return water pipe (17) is connected between the drain end of the pump body (16) and the inlet pipe (9). A hydroxyl silicone oil discharge pipe (18) is installed through the side wall of the product separation zone (4). The hydrochloric acid absorption and desorption system includes a falling film absorber (5), a hydrochloric acid desorption tower (6), and a high-purity hydrochloric acid absorption tower (7). The hydrochloric acid desorption tower (6) is equipped with a heating base (21) at the bottom and a condenser (22) at the top. The high-purity hydrochloric acid absorption tower (7) is equipped with a deionized water spray device (25) at the top and a drain pipe (26) at the lower part of the side wall.

2. The integrated hydrolysis polymerization and hydrochloric acid recovery device for room temperature vulcanizing silicone rubber according to claim 1, characterized in that: The inlet of the falling film absorber (5) is connected to the top of the hydrolysis reaction zone (2) through the first gas guide pipe (19), the inlet of the hydrochloric acid desorption tower (6) is connected to the outlet of the falling film absorber (5) through the liquid guide pipe (20), and the inlet of the high-purity hydrochloric acid absorption tower (7) is connected to the outlet of the hydrochloric acid desorption tower (6) through the second gas guide pipe (24).

3. The integrated hydrolysis polymerization and hydrochloric acid recovery device for room temperature vulcanizing silicone rubber according to claim 2, characterized in that: The hydrochloric acid stripping tower (6) has a slag removal port on the lower side wall and a sealing door (23) installed on the outside.

4. The integrated hydrolysis polymerization and hydrochloric acid recovery device for room temperature vulcanizing silicone rubber according to claim 1, characterized in that: The heating tube (13) is covered with an insulating layer on the outside, and the heating inner liner (12) is connected to the external circulating water bath between the side wall of the tower body (1).

5. The integrated hydrolysis polymerization and hydrochloric acid recovery device for room temperature vulcanizing silicone rubber according to claim 1, characterized in that: The hydrolysis reaction zone (2), polymerization reaction zone (3) and product separation zone (4) are connected by a feeding conduit, and a control valve is installed on the feeding conduit.

6. The integrated hydrolysis polymerization and hydrochloric acid recovery device for room temperature vulcanizing silicone rubber according to claim 1, characterized in that: Control valves are installed on the acid water phase discharge pipe (15) and the hydroxyl silicone oil discharge pipe (18), respectively.

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