Graphite concentrated hydrochloric acid production absorption tower

Abstract

A graphite concentrated hydrochloric acid production absorption tower comprises a cylinder. A concentrated hydrochloric acid inlet is formed in the upper portion of the cylinder, and a diluted hydrochloric acid steam inlet is formed in the lower portion. A plurality of support plates are fixedly connected into the cylinder, and detection holes are formed at the corresponding positions on the outside of the cylinder. A graphite upper seal head is arranged above the cylinder and is in seal fixed connection with the cylinder. A graphite lower seal head is arranged below the cylinder and is in seal fixed connection with the cylinder. Graphite packing of certain height is stacked above the support plates respectively and is disposed in the cylinder to divide the absorption tower into a plurality of graphite packing sections. A liquid distributor is arranged on the upper portion of the graphite packing section at the top end and is fixedly connected with the cylinder. A liquid re-distributor is arranged on the upper portions of the other graphite packing sections respectively and is fixedly connected with the cylinder. A liquid initial distributor is arranged at the upper end of the liquid distributor and is arranged in the cylinder and fixedly connected with the cylinder. The absorption tower has the advantages of being high in absorption efficiency, low in fabrication cost, high in anti-corrosion capacity and low in operation cost.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a high-efficiency analysis tower for concentrated hydrochloric acid made of graphite. Background technique [0002] Concentrated hydrochloric acid desorption tower is a common equipment in the production of high-purity hydrochloric acid or high-quality PVC industry; graphite material is especially suitable for the production of anti-corrosion equipment in chlor-alkali industries such as hydrochloric acid due to its unique corrosion resistance. Traditional graphite analysis towers use graphite materials to make tower internals. Due to the inherent defects of graphite material such as low strength and high brittleness; it cannot be processed into light and thin parts, so the structure of the internal parts of the graphite hydrochloric acid analysis tower is heavy and takes up a large internal space, especially the cross-sectional space; in addition, the graph...

AI Technical Summary

Problems solved by technology

Due to the inherent defects of graphite material such as low strength and high brittleness; it cannot be processed into light and thin parts, so the structure of the internal parts of the graphite hydrochloric acid analysis tower is heavy and takes up a large internal space, especially the cross-sectional space; in addition, the graphite material is generally only Suitable for processing into Raschig rings

The mass transfer efficiency of the Raschig ring is low and the packing factor is large, so that the diameter of the graphite desorption tower is generally 40-60% larger than that of the metal tower with the same performance

On the other hand, due to the amplification effect of the packed tower, it leads to a vicious circle, that is, the larger the tower diameter, the lower the mass transfer efficiency, the higher the energy consumption rate, and the worse the product quality

Therefore, the traditional graphite-made concentrated hydrochloric acid desorption tower has disadvantages such as low desorption efficiency, high operating cost, and high water content in the product hydrogen chloride.

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