阅读说明：本技术 一种钢管酸洗液过滤循环装置 (Steel pipe pickling solution filtering and circulating device ) 是由 曹卫兴 高虹 李文豪 叶建芳 王燕飞 于 2020-06-18 设计创作，主要内容包括：本发明公开了一种钢管酸洗液过滤循环装置,包括酸洗池、换热器、反应罐、沉淀池、压滤机、过滤器、酸液收集罐、若干连接管,所述的酸洗池一侧酸液出口端通过连接管与换热器进液端连通,所述的换热器出液端通过连接管与反应罐输入端连通,所述的反应罐旁设有沉淀池,所述的反应罐输出端通过连接管与沉淀池输入端连通,所述的沉淀池旁设有压滤机和过滤器,所述的沉淀池底部沉淀物输出口通过连接管与压滤机输入端连通,本发明能够将酸洗液中的铁离子反应、过滤,酸洗液可以重复循环使用,减小生产成本,减小浪费,有效去除酸洗液中的有害物质,减小对环境的污染,节能减排,减少更换酸液频率,降低人工劳动强度。(The invention discloses a steel pipe pickling solution filtering and circulating device, which comprises a pickling tank, a heat exchanger, a reaction tank, a sedimentation tank, a filter, an acid solution collecting tank and a plurality of connecting pipes, wherein the acid solution outlet end on one side of the pickling tank is communicated with the liquid inlet end of the heat exchanger through the connecting pipes, the liquid outlet end of the heat exchanger is communicated with the input end of the reaction tank through the connecting pipes, the sedimentation tank is arranged beside the reaction tank, the output end of the reaction tank is communicated with the input end of the sedimentation tank through the connecting pipes, the filter press and the filter are arranged beside the sedimentation tank, and the sediment outlet at the bottom of the sedimentation tank is communicated with the input end of the filter press through the connecting pipes. Energy conservation and emission reduction, acid liquor replacement frequency reduction and labor intensity reduction.)

1. The utility model provides a steel pipe pickle filtration cycle device which characterized in that: comprises a pickling tank (1), a heat exchanger (2), a reaction tank (3), a sedimentation tank (4), a filter press (5), a filter (6), an acid liquor collecting tank (7) and a plurality of connecting pipes (8), wherein an acid liquor outlet end on one side of the pickling tank (1) is communicated with a liquid inlet end of the heat exchanger (2) through the connecting pipe (8), a liquid outlet end of the heat exchanger (2) is communicated with an input end of the reaction tank (3) through the connecting pipe (8), the sedimentation tank (3) is arranged beside the reaction tank (4), an output end of the reaction tank (3) is communicated with an input end of the sedimentation tank (4) through the connecting pipe (8), the filter press (5) and the filter (6) are arranged beside the sedimentation tank (4), a sediment outlet at the bottom of the sedimentation tank (4) is communicated with an input end of the filter press (5) through the connecting pipe (8), a liquid outlet at the side of the sedimentation tank (4) is communicated with an, the filter press (5) liquid output end communicate with the input end of the filter (6) through a connecting pipe (8), the other acid liquor collecting tank (7) arranged on the filter (6) is arranged, and the acid liquor collecting tank (7) communicates with the acid liquor input end of the pickling tank (1) through the connecting pipe (8).

2. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: and a secondary heater (9) is arranged between the heat exchanger (2) and the reaction tank (3).

3. The steel pipe pickling solution filtering and circulating device of claim 2, wherein: the heating temperature of the secondary heater (9) is 100-150 ℃, and the heating temperature of the heat exchanger (2) is 60-100 ℃.

4. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: a stirrer (31) is arranged in the reaction tank (3).

5. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: the other retort (3) be equipped with can rather than the first retort (10) that adds of complex, first retort (10) output pass through connecting pipe (8) and retort (3) input intercommunication.

6. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: a second medicine adding tank (11) is arranged beside the acid liquor collecting tank (7), and the output end of the second medicine adding tank (11) is communicated with the input end of the acid liquor collecting tank (7) through a connecting pipe (8).

7. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: the pickling tank (1) output and heat exchanger (2) between be equipped with three way connection (12) on connecting pipe (8), three way connection (12) connect pickling tank (1) output, heat exchanger (2) input respectively, three way connection (12) remaining interface pass through connecting pipe (8) and filter (6) input intercommunication.

8. The steel pipe pickling solution filtering and circulating device of claim 7, wherein: and a first electromagnetic valve (13) is arranged on a connecting pipe (8) between the three-way joint (12) and the filter (6), and a second electromagnetic valve (14) is arranged on the connecting pipe (8) between the three-way joint (12) and the heat exchanger (2).

9. The steel pipe pickling solution filtering and circulating device of claim 1, wherein: the pickling tank is characterized in that an infusion pump (15) is arranged on a connecting pipe (8) between the acid liquor collecting tank (7) and the input end of the pickling tank (1), a liquid level sensor (16) is arranged in the pickling tank (1), and the liquid level sensor (16) is connected with the infusion pump (15) in a control mode.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of pickling equipment, in particular to the technical field of a pickling solution filtering and circulating device.

[ background of the invention ]

Seamless steel pipes are steel pipes made of one piece of metal without seams on the surface, and are called seamless steel pipes. According to the production method, the seamless pipe is divided into a hot rolled pipe, a cold drawn pipe, an extruded pipe, a pipe jacking, and the like. The seamless steel pipe is divided into a round shape and a special shape according to the shape of a section, and the special-shaped pipe has various complex shapes such as a square shape, an oval shape, a triangular shape, a hexagonal shape, a melon seed shape, a star shape and a pipe with fins. The maximum diameter is up to 650mm, and the minimum diameter is 0.3 mm. Depending on the application, there are thick-walled pipes and thin-walled pipes. The seamless steel pipe is mainly used as a petroleum geology drill pipe, a cracking pipe, a boiler pipe and a bearing pipe for petrochemical industry, and a high-precision structural steel pipe for automobiles, tractors and aviation. In order to improve steel pipe surface smoothness, improve steel pipe corrosion resistance in the seamless steel pipe production, carry out pickling surface treatment to the steel pipe surface more, the pickling of steel pipe needs to use the pickle, and after the pickle was used for a long time, iron ion content in the pickle increased gradually, influenced the pickle performance, influenced the pickling quality, and current pickling equipment is more directly changed the pickle, and is comparatively extravagant.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides a steel pipe pickling solution filtering and circulating device which can react and filter iron ions in a pickling solution, so that the pickling solution can be recycled, the production cost is reduced, and the waste is reduced.

In order to realize the aim, the invention provides a steel pipe pickling solution filtering and circulating device which comprises a pickling tank, a heat exchanger, a reaction tank, a sedimentation tank, a filter press, a filter, an acid solution collecting tank and a plurality of connecting pipes, wherein an acid solution outlet end on one side of the pickling tank is communicated with a liquid inlet end of the heat exchanger through the connecting pipes, a liquid outlet end of the heat exchanger is communicated with an input end of the reaction tank through the connecting pipes, the sedimentation tank is arranged beside the reaction tank, an output end of the reaction tank is communicated with an input end of the sedimentation tank through the connecting pipes, the filter press and the filter are arranged beside the sedimentation tank, a sediment outlet at the bottom of the sedimentation tank is communicated with an input end of the filter press through the connecting pipes, a liquid outlet on the side of the sedimentation tank is communicated with an input end of the filter through the connecting pipes, a, the acid liquor collecting tank is communicated with the acid liquor input end of the acid washing tank through a connecting pipe.

Preferably, a secondary heater is arranged between the heat exchanger and the reaction tank.

Preferably, the heating temperature of the secondary heater is 100-150 ℃, and the heating temperature of the heat exchanger is 60-100 ℃.

Preferably, a stirrer is arranged in the reaction tank.

Preferably, the other first medicine adding tank that is equipped with of retort can rather than the complex, first medicine adding tank output pass through connecting pipe and retort input intercommunication.

Preferably, a second medicine adding tank is arranged beside the acid liquor collecting tank, and the output end of the second medicine adding tank is communicated with the input end of the acid liquor collecting tank through a connecting pipe.

Preferably, a tee joint is arranged on a connecting pipe between the output end of the pickling tank and the heat exchanger, the tee joint is respectively connected with the output end of the pickling tank and the input end of the heat exchanger, and the rest interface of the tee joint is communicated with the input end of the filter through the connecting pipe.

Preferably, a first electromagnetic valve is arranged on a connecting pipe between the three-way joint and the filter, and a second electromagnetic valve is arranged on a connecting pipe between the three-way joint and the heat exchanger.

Preferably, a liquid conveying pump is arranged on a connecting pipe between the acid liquor collecting tank and the input end of the pickling tank, a liquid level sensor is arranged in the pickling tank, and the liquid level sensor is in control connection with the liquid conveying pump.

The steel pipe pickling solution filtering and circulating device has the beneficial effects that: the invention can react and filter iron ions in the pickling solution, the pickling solution can be recycled, the production cost is reduced, the waste is reduced, harmful substances in the pickling solution are effectively removed, the pollution to the environment is reduced, the energy is saved, the emission is reduced, the acid solution replacement frequency is reduced, and the labor intensity is reduced.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of a steel pipe pickling solution filtering and circulating device.

In the figure: 1-a pickling tank, 2-a heat exchanger, 3-a reaction tank, 4-a sedimentation tank, 5-a filter press, 6-a filter, 7-an acid liquor collection tank, 8-a connecting pipe, 9-a secondary heater, 10-a first dosing tank, 11-a second dosing tank, 12-a three-way joint, 13-a first electromagnetic valve, 14-a second electromagnetic valve, 15-an infusion pump, 16-a liquid level sensor and 31-a stirrer.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1, the invention relates to a steel pipe pickling solution filtering and circulating device, which comprises a pickling tank 1, a heat exchanger 2, a reaction tank 3, a sedimentation tank 4, a filter press 5, a filter 6, an acid solution collecting tank 7 and a plurality of connecting pipes 8, wherein an acid solution outlet end on one side of the pickling tank 1 is communicated with a liquid inlet end of the heat exchanger 2 through the connecting pipe 8, a liquid outlet end of the heat exchanger 2 is communicated with an input end of the reaction tank 3 through the connecting pipe 8, the sedimentation tank 4 is arranged beside the reaction tank 3, an output end of the reaction tank 3 is communicated with an input end of the sedimentation tank 4 through the connecting pipe 8, the filter press 5 and the filter 6 are arranged beside the sedimentation tank 4, a sediment outlet at the bottom of the sedimentation tank 4 is communicated with an input end of the filter press 5 through the connecting pipe 8, a liquid outlet on the side of the sedimentation tank 4 is communicated with an input end, the other acidizing fluid collection tank 7 that is equipped with of filter 6, acidizing fluid collection tank 7 through connecting pipe 8 and 1 acidizing fluid input intercommunication of pickling bath, heat exchanger 2 and retort 3 between be equipped with secondary heater 9, secondary heater 9 heating temperature be 100-, The input of heat exchanger 2, the remaining interface of three way connection 12 pass through connecting pipe 8 and filter 6 input intercommunication, three way connection 12 and filter 6 between be equipped with first solenoid valve 13 on the connecting pipe 8, three way connection 12 and heat exchanger 2 between be equipped with second solenoid valve 14 on the connecting pipe 8, acidizing fluid collection tank 7 and pickling bath 1 between the input be equipped with transfer pump 15 on the connecting pipe 8, pickling bath 1 in be equipped with level sensor 16, level sensor 16 and transfer pump 15 control connection.

The working process of the invention is as follows:

the invention relates to a steel pipe pickling solution filtering circulation device, in the working process, a pickling tank 1 is used for pickling, pickling solution flows to a tee joint 12 through an acid solution outlet end connecting pipe 8 on one side of the pickling tank 1, when the iron ion content in the pickling tank 1 is normal, a first electromagnetic valve 13 can be opened, a second electromagnetic valve 14 is closed, the pickling solution directly flows into a filter 6, flows into an acid solution collecting tank 7 after being filtered by the filter 6, a liquid level sensor 16 controls a liquid conveying pump 15 to work, the pickling solution is guided back to the pickling tank 1, the liquid level height in the pickling tank 1 is kept to be proper and consistent by the liquid level sensor 16, when the iron ion content in the pickling tank 1 is overhigh, the first electromagnetic valve 13 and the second electromagnetic valve 14 are opened, the pickling solution flows into a heat exchanger 2 to be heated for the first time, the heating temperature is 60-100 ℃, then the pickling solution is guided into a secondary heater 9 to, then the mixture is led into a reaction tank 3, an iron ion flocculating agent is added into the reaction tank 3 through a first medicine adding tank 10 to react with iron ions in the pickling solution, then the mixture is led into a sedimentation tank 4 for sedimentation, sediment is subjected to pressure filtration through a pressure filter 5, filtrate is led into a filter 6 and flows to an acid solution collecting tank 7, and liquid in the sedimentation tank 4 is directly led into the filter 6 and flows to the acid solution collecting tank 7.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.