Anti-scouring device for sodium silicate dissolving discharge pipe

Abstract

The utility model discloses an anti-scour device for a sodium silicate dissolving discharge pipe. The anti-scour device comprises an anti-scour structure and a discharge pipeline, the anti-scouring structure is installed at the turning position of a discharging pipeline to replace a pipeline elbow and is of a three-way structure composed of a stainless steel straight pipe and a stainless steel elbow, the tail end of the stainless steel straight pipe is sealed through a blind plate, and a sealed straight pipe extending section is formed to serve as a fluid buffering area. The inlet end and the outlet end of the anti-scouring structure are connected with a discharging pipeline to form a discharging pipeline system; the head of the discharging pipeline system is connected with a discharging outlet of the water glass dissolving kettle, and the tail end is connected with an inlet of the buffer tank. The discharging pipeline is simple and compact in structure, low in manufacturing and maintenance cost, safe and reliable to use and long in service life, and the problem that the service life of the discharging pipeline is greatly shortened due to the fact that a high-temperature and high-pressure water glass solution seriously scours the elbow of the discharging pipeline in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for the production of white carbon black by precipitation method, in particular to an anti-scouring device for a water glass dissolving discharge pipe. Background Art

[0002] Precipitated silica is a widely used fine inorganic chemical material, mainly used in rubber, silicone rubber, plastic, coating, ink, pesticide, papermaking, food, medicine, feed and other fields. The production process of precipitated silica includes the dissolution of water glass, the preparation of water glass and acid, precipitation reaction, filter pressing, washing, pulping and spray drying. Among them, the dissolution of water glass is generally carried out by setting the temperature of the water glass solution coming out of the dissolution kettle to about 140°C and the pressure to between 0.6-0.8MPa, and then sending it to the buffer tank through the pipeline. The existing defects are: since the transportation route inevitably passes through many bends, the high-temperature and high-pressure water glass solution will cause serious scouring to the pipe elbows when passing through these bends, and the premature damage of the elbows greatly reduces the service life of the discharge pipe. Summary of the invention

[0003] The utility model aims to provide a water glass dissolving and discharging pipe anti-scouring device which has a simple and compact structure, low manufacturing and maintenance costs, safe and reliable use, and a long pipe service life, so as to solve the problem in the prior art that the high-temperature and high-pressure water glass solution seriously scours the elbow of the dissolving and discharging pipe, thereby greatly reducing the service life of the discharging pipe.

[0004] To achieve the above purpose, the utility model discloses an anti-scouring device for a water glass dissolving discharge pipe, comprising an anti-scouring structure and a discharge pipe; the anti-scouring structure is installed at the turning point of the discharge pipe to replace the pipe elbow, and is a structure similar to a tee composed of a stainless steel straight pipe and a stainless steel curved pipe, the end of the stainless steel straight pipe is closed by a blind plate to form a closed straight pipe extension section as a fluid buffer zone; the inlet and outlet ends of the anti-scouring structure are both connected to the discharge pipe to form a discharge pipe system; the head of the discharge pipe system is connected to the discharge outlet of the water glass dissolving kettle 1, and the tail end is connected to the inlet of the buffer tank 4.

[0005] There are two anti-scour structures in total, the first is an anti-scour upper bend 2, on which are provided an upper bend blind plate 2-1, an upper bend outlet 2-2 and an upper bend inlet 2-3, and the second is an anti-scour flat bend 3, on which are provided a flat bend blind plate 3-1, a flat bend outlet 3-2 and a flat bend inlet 3-3.

[0006] The technical features of the utility model water glass dissolving discharge pipe anti-scouring device mainly include the following aspects:

[0007] Material selection: Use stainless steel alloy materials with corrosion resistance, wear resistance and good high temperature stability to ensure that the device has a good service life in high temperature, high pressure and high corrosion environment.

[0008] Structural design: According to the structure and working conditions of the discharge pipe, the structure of the anti-scour device is scientifically and rationally designed, and a buffer zone structure design is adopted to reduce the impact of the material on the device and reduce wear.

[0009] The utility model of the water glass dissolving discharge pipe anti-scouring device improves the existing pipe elbow, selects materials scientifically and adopts buffer zone structure design, and has the following beneficial effects:

[0010] 1. It greatly prolongs the service life of the discharge pipe elbow, reduces the number of pipeline shutdowns and repairs, significantly reduces maintenance costs, and improves production efficiency.

[0011] 2. The whole device has a simple and compact structure, low manufacturing cost and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the installation structure of the water glass dissolving discharge pipe anti-scouring device.

[0013] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the middle anti-scour device when it is bent upward.

[0014] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of the middle anti-scour device during flat bending.

[0015] Figure numerals: water glass dissolving kettle 1, anti-scour upper bend 2, upper bend blind plate 2-1, upper bend outlet 2-2, upper bend inlet 2-3, anti-scour flat bend 3, flat bend blind plate 3-1, flat bend outlet 3-2, flat bend inlet 3-3, buffer tank 4, extraction pump 5, water glass storage tank 6. DETAILED DESCRIPTION

[0016] The specific implementation method of the water glass dissolving discharge pipe anti-scouring device of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] Figure 1-Figure 3As shown, the utility model of the anti-scouring device for the water glass dissolving discharge pipe comprises an anti-scouring structure and a discharge pipe; the anti-scouring structure is installed at the turning point of the discharge pipe to replace the pipe elbow, and is a structure similar to a tee composed of a stainless steel straight pipe and a stainless steel bent pipe. The end of the stainless steel straight pipe is closed by a blind plate to form a closed straight pipe extension section as a fluid buffer zone; the inlet and outlet ends of the anti-scouring structure are both connected to the discharge pipe to form a discharge pipe system; the anti-scouring structure is provided with two, the first One is an anti-scour upper bend 2, on which an upper bend blind plate 2-1, an upper bend outlet 2-2 and an upper bend inlet 2-3 are provided, and the second is an anti-scour flat bend 3, on which a flat bend blind plate 3-1, a flat bend outlet 3-2 and a flat bend inlet 3-3 are provided; the head of the discharge pipeline system is connected to the discharge outlet of the water glass dissolving kettle 1, and the tail end is connected to the inlet of the buffer tank 4; the bottom outlet of the buffer tank 4 is connected to the upper inlet of the water glass storage tank 6 after connecting the feed pump 5, and the top hot gas outlet of the buffer tank 4 is connected to the heat recovery system.

[0018] The working process of the utility model water glass dissolving discharge pipe anti-scouring device is as follows:

[0019] Discharging of the dissolving kettle: The water glass in the water glass dissolving kettle 1 is dissolved under high temperature and high pressure to quickly produce high temperature and high pressure liquid water glass of a certain concentration, which is first discharged from the discharging outlet of the water glass dissolving kettle 1.

[0020] Through the anti-scouring structure: In the discharge pipe system, the elbow is a common component used to change the direction of the pipe; when the liquid water glass flows at a high speed, it will cause scouring and wear on the pipe elbow, which will shorten the service life of the pipe and may even cause leakage or rupture. In order to solve this problem, the utility model transforms the discharge pipe elbow of the pipe into an anti-scouring structure, so that the liquid water glass can flow smoothly in the pipe; the anti-scouring structure can resist the scouring and erosion of the high-speed flowing liquid water glass, thereby extending the overall service life of the pipe system, reducing maintenance costs, and ensuring the continuity and safety of the process.

[0021] Entering the buffer tank: Liquid water glass flows into the buffer tank 4, which is used to slow down the flow rate, reduce impact, and provide a larger space for heat and pressure to be released.

[0022] Heat recovery: The hot steam generated in the buffer tank 4 will go to the heat recovery tank at the top of the buffer tank to achieve heat recovery.

[0023] Storage: After settling and standing in the buffer tank 4, the liquid water glass is pumped into the water glass storage tank 6 by the pumping pump 5 for storage. The water glass storage tank 6 is usually used to stably store materials and provide raw materials for the downstream production process.

Claims

1. A water glass dissolving discharge pipe anti-scouring device, characterized by: It comprises an anti-scouring structure and a discharge pipe; the anti-scouring structure is installed at the turning point of the discharge pipe to replace the pipe elbow, and is a structure similar to a tee composed of a stainless steel straight pipe and a stainless steel bent pipe. The end of the stainless steel straight pipe is closed by a blind plate to form a closed straight pipe extension section as a fluid buffer zone; the inlet and outlet ends of the anti-scouring structure are both connected to the discharge pipe to form a discharge pipe system; the head end of the discharge pipe system is connected to the discharge outlet of the water glass dissolving kettle (1), and the tail end is connected to the inlet of the buffer tank (4).

2. The water glass dissolving discharge pipe anti-scouring device as claimed in claim 1, characterized in that: The anti-scour structure is provided with two structures, the first being an anti-scour upper bend (2), on which an upper bend blind plate (2-1), an upper bend outlet (2-2) and an upper bend inlet (2-3) are provided; the second being an anti-scour flat bend (3), on which a flat bend blind plate (3-1), a flat bend outlet (3-2) and a flat bend inlet (3-3) are provided.

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