Sulfur underwater granulation system with reasonable structure

Abstract

The invention relates to a sulfur underwater granulation system with a reasonable structure. The sulfur underwater granulation system contains a liquid sulfur tank, a liquid sulfur pumping mechanism,a liquid sulfur granulation and molding mechanism, a granulated sulfur and water separation mechanism, a granulated sulfur air drying mechanism, a sulfur powder remelting mechanism, a product collection mechanism, and a sulfur powder water settling mechanism. The granulating and molding mechanism is arranged in a closed type with a controllable air pressure, which can prevent liquid sulfur and sulfide flue gas from overflowing and ensure safe and efficient production; a flue gas purifier and a dust purifier with sulfur gas separation and powder-gas separation functions are arranged between a liquid sulfur dropping device and a sulfur powder water settling tank and between the granulated sulfur air drying mechanism and the sulfur powder water settling tank respectively, which is beneficialto environmental protection and resource recycling; and a dehydrator with a function of reducing the accompanying grain water output is arranged between a forming water tank and a dehydration vibrating screen, so that the loads of solid-water separation and air drying facilities can be reduced, the service life can be ensured, the shutdown maintenance probability can be reduced, the production cost can be reduced, the dehydration and air drying efficiency of the formed particles can be improved, and the product quality and the high-efficiency output of the system can be ensured. The sulfur underwater granulation system achieves remarkable results and is a major innovation in this field.

Description

technical field [0001] The invention relates to the technical field of sulfur granulation molding equipment, in particular to an underwater sulfur granulation system with a reasonable structure. Background technique [0002] The exhaust gas discharged from the petrochemical refining industry contains a large amount of sulfide flue gas, which will not only pollute the air, but also cause a loss of resources. For this reason, each unit is equipped with a desulfurization device for recovering sulfide, and the liquid sulfur released becomes waste. It is a treasure, which not only solves the problem of environmental protection compliance of exhaust gas, but also facilitates the recovery and reuse of sulfide. At present, in terms of sulfide recycling, it is mainly realized by configuring granulation and molding machines with the function of making sulfide-desorbed liquid sulfur into granular sulfur products. The most representative is the sulfur underwater granulation system, the...

AI Technical Summary

Problems solved by technology

The most representative is the sulfur underwater granulation system, the basic structure is as follows figure 1 As shown, it mainly includes a liquid sulfur pool (abbreviated as a liquid sulfur pool) 1, a liquid sulfur pump delivery mechanism 2, a liquid sulfur granulation forming mechanism 3 including a liquid sulfur dripping device 31 and a forming water tank 32, and a dehydration vibrating screen 41 acts as Granular sulfur and water separation mechanism (referred to as solid-liquid separation mechanism) 4. Granular sulfur air-drying mechanism including air-drying screen 51 and heat exchange and exhaust device 52. Product collection mechanism 6. Sulfur powder water settling tank 7 and sulfur powder remelting The disadvantage of mechanism 8 is that since the liquid sulfur forming and dripping device 31 is served by an open forming plate with the function of stagnating and dripping liquid sulfur, the liquid sulfur flue gas stagnated in it will continue to volatilize and affect the surrounding air quality; However, when the liquid sulfur stagnates too much, it is easy to overflow and directly flow into the forming water tank 32, resulting in the formation of uncontrolled volume and shape of sulfur blocks or sulfur flakes, which will easily cause the larger ones to block the water tank drainage pipe and affect the normal operation of the system. , Bringing the trouble of shutting down for maintenance, although the smaller ones will be discharged along with the normal molding particles, but it will often lead to different sizes of the molding particles and affect the quality of the finished product, and because the liquid sulfur is naturally dripping under normal atmospheric pressure, Therefore, the dripping frequency is limited, resulting in low granulation output; at the same time, because the sewer pipe of the forming water tank 32 is directly connected with the granular sulfur and the water separation mechanism 4, the sulfur granules formed in the water tank will be sent to the vibrating machine in the form of direct impact along with the launching water. sieve 41, resulting in a large workload on the vibrating screen 41, which is unfavorable to the working life of the vibrating screen 41, and because the sulfur particles are dehydrated under a large amount of water, the dehydration load is too large, the dehydration efficiency is low, and the product compliance rate is affected. In addition, although the particle sulfur air-drying mechanism 5 is equipped with a heat exchange exhaust mechanism 52, it has no dust purification function, so that the sulfur dust produced by the sulfur particles in the air-drying process is directly discharged, which does not meet environmental protection requirements

Therefore, from the perspectives of environmental protection requirements, high-efficiency output, and product quality assurance, the overall structure of the sulfur underwater granulation system in the existing structure is not scientific and reasonable, and it is not ideal from the perspectives of economy and practicability.

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