A continuous liquid phase reactor and a process for producing liquid sodium silicate using the reactor

Abstract

The present invention and the technical field of inorganic silicon production, in particular, relate to a continuous liquid phase reactor for the production of liquid sodium silicate, comprising a reactor body, the interior of the reactor body is provided with a multi-layer partition, and the partition divides the interior of the reactor body It is divided into a settling area, a heat preservation reaction area, an exothermic reaction area and a preheating area. A stirring device is installed inside the reactor body, a heating device is installed outside the reactor body corresponding to the exothermic reaction area, and a preheating device is installed in the preheating area. device; the settling area is provided with a liquid level sensor and a pressure sensor, and the settling area, heat preservation reaction area, exothermic reaction area and the preheating area are respectively provided with temperature sensors, and the liquid level sensor, pressure sensor and temperature sensor are respectively electrically connected to the controller . The invention also includes a process for producing sodium silicate using a continuous liquid phase reactor, which reduces cost and consumption, realizes automatic control, and greatly improves production efficiency.

Description

technical field [0001] The invention relates to the technical field of inorganic silicon production, in particular to a continuous liquid phase reactor and a process for producing liquid sodium silicate using the reactor. Background technique [0002] The traditional production process is to put quartz sand and soda ash into a special high-temperature roasting furnace, heat and melt, discharge the material after the reaction is sufficient, cool to form solid glassy sodium silicate, add water and alkali to dissolve under pressure to form a liquid sodium silicate product, This technological process is long, consumes a large amount of energy, is unfavorable for national industrial policy. The other is made of quartz sand and caustic soda as raw materials. After mixing, they are added to the reaction kettle and heated and pressed. The production process of sodium silicate by liquid phase method is simple, but there are defects such as long process flow, only low modulus product...

AI Technical Summary

Problems solved by technology

The production process of sodium silicate by liquid phase method is simple, but there are defects such as long process flow, only low modulus products can be produced, and unreacted quartz sand and impurities form a large amount of waste residue, which makes subsequent treatment difficult, resulting in waste of raw materials, It does not conform to my country's resource conservation policy

[0003] The reaction or dissolution device currently used is a stirring reactor, and the reaction is intermittent. During operation, operations such as feeding and discharging, steam inlet and exhaust are required, so the production efficiency of the reactor is low, and the volume design of the reactor is limited, resulting in a large-scale production. There are a large number of kettles, a large amount of parallel operation of multiple kettles, cross-operation is required for feeding and discharging materials, high labor costs, low automation, large equipment investment, and large floor space.

In addition, when the existing reactor produces sodium silicate, the production efficiency is low, and the modulus of the obtained liquid product is between 1.4-2.5, which cannot produce high-modulus products; therefore, for the above problems, it is necessary to establish a continuous liquid phase Reactor and process method for producing liquid sodium silicate using the reactor

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