Stirring paddle for germanium-containing material distillation reaction kettle

Abstract

A stirring paddle for a germanium-containing material distillation reaction kettle comprises a long metal pipe, a short metal pipe, a polyethylene long pipe and a polyethylene four-way connector, two holes are formed in the position, away from the bottommost end, of the lower portion of the long metal pipe, the short metal pipe is welded in a first hole and a second hole, the long metal pipe is sleeved with the polyethylene long pipe, and the inner diameter of the polyethylene long pipe is matched with the outer diameter of the long metal pipe. The top end of the long metal pipe is exposed out of the polyethylene long pipe and is provided with threads; the connecting position of the long metal pipe and the short metal pipe is wrapped by a polyethylene four-way pipe, the connecting position of the polyethylene four-way pipe and the long polyethylene pipe is fixed in a hot melting mode, and the distance between the inner wall of the polyethylene four-way pipe and the outer wall of the short metal pipe is not smaller than 10 mm. And the ends of the four short metal pipes and the bottom ends of the long metal pipes are respectively sealed on the polyethylene four-way pipe through hot melting of polyethylene end sockets. The stirring paddle is low in production cost, meanwhile, the durability of the stirring paddle is improved, and the problems of cracking corrosion and non-durability are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a strong acid and strong alkali resistant stirring paddle for a distillation reactor for germanium-containing materials. Background Art

[0002] During the chlorination distillation of fluorine-containing germanium concentrate, the enamel stirring paddle in the reaction kettle is easily corroded and damaged by fluoride ions, shortening the service life of the enamel stirring. The existing tetrafluoroethylene stirring paddle used to prevent hydrogen fluoride corrosion is expensive to manufacture. For a fully tetrafluoroethylene stirring paddle, since there is no metal support inside, it is not suitable for the stirring paddle of large reaction equipment (reaction kettle above 3000L). For the stirring paddle made of tetrafluoroethylene-lined material, at the reaction temperature of germanium chlorination distillation of about 110 degrees Celsius, during each steaming process, after the enamel-lined tetrafluoroethylene material stirring paddle expands and contracts thermally many times, the tetrafluoroethylene on the surface cracks at the blade position of the stirring paddle, and hydrogen fluoride enters from the cracked part to corrode the inside of the stirring paddle and damage the stirring paddle. It can be seen that for the stirring paddle of the chlorination distillation reactor for fluorine-containing germanium concentrate, a stirring paddle that can resist fluoride ion corrosion, is easy to process and manufacture, and has a low cost is needed. Content of the Utility Model

[0003] In order to solve the problems that the enamel stirring paddle is not resistant to hydrogen fluoride corrosion, the durability of the stirring paddle is increased, and the tetrafluoroethylene-lined stirring paddle is prevented from cracking and corroding and being not durable, the utility model provides a stirring paddle for a distillation reactor for germanium-containing materials.

[0004] A stirring paddle for a distillation reactor for germanium-containing materials, characterized in that it includes a long metal tube, a short metal tube, a long polyethylene tube, and a polyethylene four-way joint. The diameter of the long metal tube is 100 mm - 200 mm smaller than the inner diameter of the mechanical seal, its wall thickness is 5 mm - 10 mm, and its length is 4 / 5 of the height of the reactor. A first hole with a diameter of 32 mm - 50 mm is opened at the lower part of the long metal tube 200 mm from the bottom end, and a second hole with a diameter of 32 mm - 50 mm is opened again 500 mm from the bottom end, and the first hole and the second hole are perpendicular to each other on the horizontal plane; the length of the short metal tube is 300 mm - 500 mm, the diameter is 10 mm, and one end of the tube head is welded with a head whose diameter matches the diameter of the first hole or the second hole, and is welded in the first hole and the second hole through the head, and the short metal tubes welded in the same hole are symmetrically arranged; a long polyethylene tube with an inner diameter matching the outer diameter of the long metal tube is sleeved outside the long metal tube, and the length of the long polyethylene tube is shorter than that of the long metal tube, so that the top end of the long metal tube protrudes outside the long polyethylene tube and is provided with threads, and the top of the long polyethylene tube is fixed to the long metal tube by bolts; the connection position between the long metal tube and the short metal tube is wrapped with a polyethylene four-way tube, and the connection between the polyethylene four-way tube and the long polyethylene tube is heat-melted and fixed, and the distance between the inner wall of the polyethylene four-way tube and the outer wall of the short metal tube is not less than 10 mm, and polyethylene end caps are heat-melted on the polyethylene four-way tube to seal the ends of the four short metal tubes and the bottom end of the long metal tube respectively.

[0005] The beneficial effects of the present utility model are as follows: The polyethylene pipe is resistant to hydrogen fluoride, strong acids and strong alkalis, and a metal pipe is set as an internal support, which can be suitable for the stirring of large reaction equipment. There is a gap between the polyethylene four-way pipe and the short metal pipe, which reduces the damage to the stirring paddle itself caused by the thermal expansion and contraction of the polyethylene pipe. The production cost of this stirring paddle is low, and at the same time, the durability of the stirring paddle is increased, and the problems of cracking, corrosion and non-durability are solved. Description of the Drawings

[0006] Figure 1 It is the front view of a stirring paddle for a distillation reactor for germanium-containing materials.

[0007] Figure 2 It is the cross-sectional view of a stirring paddle for a distillation reactor for germanium-containing materials.

[0008] Wherein: 1 - long metal tube, 2 - short metal tube, 3 - long polyethylene tube, 4 - polyethylene four-way joint, 5 - polyethylene end cap. Detailed Embodiment

[0009] Example 1: A stirring paddle for a distillation reactor for germanium-containing materials, comprising a long metal tube 1, a short metal tube 2, a polyethylene long tube 3, and a polyethylene four-way joint 4. The diameter of the long metal tube 1 is 100 mm - 200 mm smaller than the inner diameter of the mechanical seal, its wall thickness is 5 mm - 10 mm, and its length is 4 / 5 of the height of the reactor. A first hole with a diameter of 32 mm - 50 mm is opened at a distance of 200 mm from the bottom end of the lower part of the long metal tube 1, and a second hole with a diameter of 32 mm - 50 mm is opened at a distance of 500 mm from the bottom end. And the first hole and the second hole are perpendicular to each other on the horizontal plane. The length of the short metal tube 2 is 300 mm - 500 mm, and the diameter is 10 mm. At one end of the tube head, a head with a diameter matching that of the first hole or the second hole is welded, and it is welded into the first hole and the second hole through the head, and the short metal tubes 2 welded in the same hole are symmetrically arranged. A polyethylene long tube 3 with an inner diameter matching the outer diameter of the long metal tube 1 is sleeved outside the long metal tube 1, and the length of the polyethylene long tube 3 is shorter than that of the long metal tube 1, so that the top end of the long metal tube 1 is exposed outside the polyethylene long tube 3 and provided with threads, and the top of the polyethylene long tube 3 is fixed to the long metal tube 1 by bolts. The connection position between the long metal tube 1 and the short metal tube 2 is wrapped with a polyethylene four-way tube 4, and the connection between the polyethylene four-way tube 4 and the polyethylene long tube 3 is heat-melted and fixed, and the distance between the inner wall of the polyethylene four-way tube 4 and the outer wall of the short metal tube 2 is not less than 10 mm. A polyethylene head 5 is heat-melted on the polyethylene four-way tube 4 to seal the ends of the four short metal tubes 2 and the bottom end of the long metal tube 1 respectively.

[0010] During use, the top of the long metal tube 1 is connected to the motor on the mechanical seal of the reactor through threads, and the stirring paddle is inserted into the reactor by 300 mm for stirring.

Claims

1. A stirring paddle for a distillation reactor of germanium-containing materials, characterized in that: It includes a long metal pipe, a short metal pipe, a long polyethylene pipe, and a polyethylene four-way joint. The diameter of the long metal pipe is 100 mm - 200 mm less than the inner diameter of the mechanical seal, its wall thickness is 5 mm - 10 mm, and its length is 4 / 5 of the height of the reactor. A first hole with a diameter of 32 mm - 50 mm is opened at the lower part of the long metal pipe 200 mm from the bottom end, and a second hole with a diameter of 32 mm - 50 mm is opened at 500 mm from the bottom end. Moreover, the first hole and the second hole are perpendicular to each other on the horizontal plane. The length of the short metal pipe is 300 mm - 500 mm, and its diameter is 10 mm. A head with a diameter matching that of the first hole or the second hole is welded at one end of the pipe head, and it is welded into the first hole and the second hole through the head. The short metal pipes welded in the same hole are symmetrically arranged. A long polyethylene pipe with an inner diameter matching the outer diameter of the long metal pipe is sleeved outside the long metal pipe, and the length of the long polyethylene pipe is shorter than that of the long metal pipe, so that the top end of the long metal pipe protrudes outside the long polyethylene pipe and is provided with threads, and the top of the long polyethylene pipe is fixed to the long metal pipe by bolts. The connection position between the long metal pipe and the short metal pipe is wrapped with a polyethylene four-way pipe, and the connection between the polyethylene four-way pipe and the long polyethylene pipe is heat-melted and fixed. Moreover, the distance between the inner wall of the polyethylene four-way pipe and the outer wall of the short metal pipe is not less than 10 mm. Polyethylene end caps are heat-melted on the polyethylene four-way pipe to seal the ends of the four short metal pipes and the bottom end of the long metal pipe respectively.

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