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The enamel reactor is a brittle material, it is easy to crack when it is accidentally impacted or squeezed, and the glass lining will peel off in severe cases. What should I do if this happens? Here are the points I have summarized for you, let’s take a look:

2021

Alkali resistance range of glass-lined reactor

Glass-lined reactor is a kind of anti-corrosion equipment that is commonly used in industrial production. According to the manufacturer, many problems will always be encountered in the process of producing glass-lined reactor. For example, the glass-lined reactor is for diazotization. During the repair work, we are afraid of danger during this process, so we can clean the remaining medium in the glass-lined reactor by adding alkaline water, but many people do not control the concentration of this alkali well. Next, let’s see how to control the alkali. Degrees can keep our equipment from damage: First of all, we must know that the specifications of glass-lined reactors are not the same, but in fact they are basically the same in terms of acid and alkali resistance. In theory, as long as the pH value is not greater than 12, and the temperature is controlled within 100 degrees, the alkaline water It will not cause damage to the reactor. However, for the sake of safety, we often recommend that the temperature be controlled at 70-80 degrees and the PH value is controlled at about 10 so as to ensure that the porcelain layer of the glass-lined reactor will not be damaged. Glass-lined reactors often have to deal with some corrosive materials, so if the glass-lined reactors are not handled properly, problems will easily occur. Only by doing periodic inspections and routine maintenance of the glass-lined reactors can these problems be discovered in time to avoid production accidents. happened. But there is another important point, that is, the quality of the reactor itself is no problem, no birth defects, no defects. If you buy an old or second-hand kettle, refurbished kettle, etc., it is quite different from a new glass-lined reactor. Because it has been used more or less for a period of time, its performance cannot meet the required standards that we want to use, so it is also very important to choose a professional glass-lined reactor manufacturer with quality assurance.

2021

Assembly requirements for glass-lined reactor

The glass-lined reactor has been assembled and debugged when you buy it, and you don’t need to assemble it when you get it. However, for some customers with special requirements, the reactor needs to be reassembled, but it is assembled to ensure the normal operation of the reactor. The requirements are strict, let's take a look at its assembly requirements below. 1. The glass-lined reactor should be hoisted according to the hoisting parts specified in the drawings; it is forbidden to use manholes, nozzles, chucks and other parts as lifting eyes. The equipment should be raised and lowered during lifting. It is strictly forbidden to directly contact the glass-lined reactor with hard objects. It is strictly forbidden to hit or hit the outer wall of the device. It is forbidden to use rolling, congestion, etc. to move the equipment. 2. If personnel, components, and installation tools are required to enter the equipment during the assembly process, the surface of the glass-lined reactor of the equipment should be protected reliably and effectively. The components and tools entering the equipment must not collide with the surface of the glass-lined reactor. It is strictly forbidden for hard objects to fall, break, or scratch the surface of the glass-lined reactor. 3. When welding equipment accessories, there must be reliable protection facilities to prevent welding slag from burning the surface of the glass-lined reactor. 4. It is strictly forbidden to weld the opposite metal base. 5. The clamps (bolts) of the equipment should be evenly distributed and tightened gradually in a symmetrical sequence. It is strictly forbidden to tighten at the same time. In order to prevent excessive local stress on the flange from damaging the lining glass layer, it is strictly forbidden to eliminate leakage points and tighten several chucks firmly. 6. If the gap between the two high collar flanges of the equipment is very large, in order to ensure the uniform pressure of the high collar flange and the gasket and the sealing is reliable, it can increase part of the offset gasket adjustment, but the material of the offset gasket cannot affect the equipment usage of. 7. After the stirring device is installed, the full radial movement of the sealing section of the stirring device should meet the gb25025-2010 standard. 8. The complete set of glass-lined reactor equipment should be qualified after the trial operation of the whole plant. The appearance of the assembled product should be checked, and the appearance should be smooth, neat and clean. After passing the inspection, the protective paint is sprayed, the logo is installed, and the product certificate is issued. Each nozzle and exposed glass lining surface should be protected with soft material. Fasteners, mixing shaft heads and pipe flanges should be coated with anti-rust oil. When assembling the glass-lined reactor, a professional installer should be selected to minimize the wear of the product. After the assembly is completed, the glass lining should be protected by soft materials, and some parts that are prone to rust should be smeared with anti-rust oil to increase its service life.

2021

Design requirements of impeller agitator for glass-lined reactor

The blades of the glass-lined impeller stirrer should be curved blades, and the sweep angle is equal to 50°: this is a very important dimension. The sweep angle of 50° is the data summarized by a lot of experiments and time. When the speed of the impeller stirrer of the glass-lined reactor is 130r/min, it can make the stirring consume less power and produce greater centrifugation and discharge capacity for the liquid, which can strengthen the volume circulation of the liquid in the glass-lined reactor vessel. This is the conclusion drawn after a lot of experiments. However, because the agitator will produce centrifugal force on the liquid, when there is no baffle in the glass-lined reactor, the liquid in the glass-lined reactor will form a vortex, causing the liquid to rotate as a whole around the wall of the reactor, which will seriously affect the mass transfer. Effect. Therefore, when you use an impeller-type glass-lined agitator for your glass-lined reactor, you must consider the corresponding baffle and install it. The tilt angle of the glass-lined reactor impeller glass-lined agitator is 15°: the tilt angle of 15° is an important geometric dimension, which enables the glass-lined impeller agitator to have a strong discharge capacity for materials when the blades are rotating. Strengthen the overall circulation of materials. The impeller type agitator rotates, and the blade throws the fluid towards the tank wall in a direction of 15°. Under the action of the reaction force, a split is formed. Most of the liquid flows upwards along the glass-lined reactor tank wall and reaches the top of the range of action. Converge between the shafts, and then flow downwards to form a main circulating flow; while a small part of the fluid flows downwards along the wall of the glass-lined reaction tank, reaches the bottom of the tank and then merges upwards between the shafts to form a small circulating flow. This is the flow pattern to be produced by the impeller stirrer of the glass-lined reactor. If the tilt angle changes (too large or too small), the flow pattern will change, that is, the height of the stirring blade from the bottom of the glass-lined reactor should be adjusted, otherwise the reaction efficiency will be affected and the design and process objectives will not be achieved.

2021

What should be paid attention to in the maintenance of glass lined reactor

The maintenance of the glass-lined reactor is indispensable when we use it, which can also help keep it in a good condition, but for it, in addition to daily maintenance, we also need to do maintenance, but if we master it The main points can be operated well. 1. The upper part of the glass-lined reactor high-temperature and high-speed magnetic stirrer has an oil injection hole, which is set to inject grease into the bearing when it is stopped. It can be used only after the pressure in the glass-lined reactor is relieved. Add 30-50CC each time and inject it with a syringe. 2. When repairing the magnetic stirrer of the glass-lined reactor, there is no need to open the cover, just loosen the nut connected with the cover. 1. When disassembling the glass-lined reactor, try to avoid impurities such as iron and magnetic materials from entering the gap between the inner and outer magnetic steel. 2, to ensure the concentricity of the magnetic steel inside and outside the glass-lined reactor and the sealing cover. When installing, tighten the bolts evenly and symmetrically, and tighten the bolts in 2 to 3 times to prevent the bolts from going up and damaging the gasket and affecting the sealing effect. 3. Before disassembling, the glass-lined reactor should be drained of the reaction materials in the reactor and cleaned with a gas-liquid medium that is harmless to the human body. Four. Regularly check the swing of the stirring shaft of the lower glass-lined reactor. If the swing is found to be large, disassemble it immediately and replace the bearing and sleeve according to the structure drawing. The composite shaft sleeve or graphite shaft sleeve used in the magnetic stirrer has a design life of 1 to 2 years. To ensure the normal operation of the equipment, it is recommended to replace it once a year. The overhaul of the glass-lined reactor is an indispensable step in our use. Only by regular overhaul can we understand the use of our equipment, and can also check out its problems in time to facilitate maintenance so as not to affect our work.

2021

The chemical reaction when the enamel reactor is working

The outer layer and steam pipes of the enamel reactor are covered with asbestos or other materials that are not easy to transfer heat as an insulating layer to reduce energy consumption and avoid scalding the operator. A gasket should be added between the kettle body and the kettle cover to seal, and the gland should be sealed when installing the stirrer. Enamel reaction kettles are generally commonly used enamel kettles, that is, the inner wall of the kettle is coated with acid and alkali-resistant enamel, which has the chemical stability of glass and the pressure-bearing capacity of steel containers. The lining is a glaze made of silica as the main body and a variety of other elements. After repeated spraying and sintering, the enamel layer is attached to the surface of the metal substrate. It can resist the removal of hydrofluoric acid and strong alkalis. Corrosion of various concentrations of organic acids, inorganic acids, organic solvents and weak alkalis. The negative pressure in the enamel reactor is lower than 1O1kPa. There is a hole at the bottom of the jacket, which is connected to the cold water pipe, and can also drain the jacket to neutralize excess steam and cooling water. There are 1-2 holes in the upper part of the jacket to connect the steam pipe and discharge the cooling water, so that the heat can be fully utilized and the heat released by the reaction can be taken away, avoiding the temperature of the reaction liquid from being too high, and effectively controlling the exothermic reaction . There is only one discharge port on the oval bottom. The spherical top cover is provided with a feeding port or a manhole (the large kettle has a population), an observation hole, a sampling hole, a cooling reflux device port, a temperature measuring device port, and a hole for installing agitator.

2021

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