Sieving type monosodium glutamate crystallization and separation process and equipment

Abstract

The invention relates to a sieving type monosodium glutamate crystallization and separation process and equipment. According to the sieving type monosodium glutamate crystallization and separation process, a de-coloring solution is crystallized in a crystallization tank (5) and then is conveyed into a thickener (7) to separate large and small crystalline particles; the large particles are subsequently processed to prepare a finished product; the small particles are conveyed back to the crystallization tank (5) to be continually crystallized, and the thickener (7) is internally provided with a sieving sheet (18) for separating the large and small crystalline particles. The thickener (7) is provided with a tank body defined by an upper cover (13), a lower bottom (15) and peripheral wall plates; the upper cover (13) is provided with a feeding opening (14); the lower bottom (15) is provided with a material returning opening (17) communicated with the crystallization tank (5) and a discharging opening (16) communicated with a crystallization assisting groove (8); the sieving sheet (18) which is arranged obliquely arranged in the tank body; the feeding opening (14) and the discharging opening (16) are formed in one side of the sieving sheet (18); the material returning opening (17) is formed in the other side of the sieving sheet (18). The sieving type monosodium glutamate crystallization and separation process and equipment have the beneficial effects that after the monosodium glutamate is crystallized to enter the thickener, the small particles are sieved and conveyed back to the crystallization tank to be continually crystallized, and the large particles are prepared into the finished product; the large and small crystalline particles are separated rapidly and accurately; the circulation is reduced and the energy consumption is saved; crystalline grains of a product are ordered and the quality is improved.

Description

technical field [0001] The invention relates to a method and machinery for producing monosodium glutamate, that is, a sieving type monosodium glutamate crystallization separation process and equipment. Background technique [0002] The crystallization process is an important process in the production of monosodium glutamate, and its main equipment includes crystallization tanks, thickeners, crystallization tanks, centrifuges, etc. At present, the above-mentioned equipment has realized serialization. The process flow is as follows: the decolorized liquid prepared in the early stage enters the crystallization tank, evaporates and concentrates under high heat and vacuum conditions, and monosodium glutamate molecules form crystal particles. Due to the continuous production process, the formation process of crystal particles cannot be completely consistent. There are larger particles that have completed crystallization and small particles that have not completed crystallization....

AI Technical Summary

Problems solved by technology

[0005] 2. Since the separation process requires a large stroke, the thickener must have a large radius and height, with a volume of about 20m 3 , needs abutment support, high cost and large floor space

[0006] 3. The structure of the thickener is complicated, and the operation is difficult. The bottom of the thickener is prone to deposits of monosodium glutamate, causing blockage. A large amount of water is required for shutdown and cleaning, which affects production efficiency and economic benefits.

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