Dust removing and recycling system for granulation column

Abstract

The invention is mainly applied to the field of recycling devices and recycling methods for dust at the tops of multifunctional granulation columns, and in particular relates to a dust removing and recycling device for a granulation tower. The dust removing and recycling device comprises a liquid collection circulating system and a dust recycling chamber; the liquid collection circulating system comprises a liquid collecting tank; the liquid collecting tank is positioned below a second-stage spraying and atomizing absorbing device; a discharging pipe is arranged at the bottom of the liquid collecting tank, and is communicated with an ammonium nitrate circulating tank and a nitrate fertilizer circulating tank through a tee joint; both the bottom of the ammonium nitrate circulating tank and the bottom of the nitrate fertilizer circulating tank are communicated with a discharging pipe; a circulating pump and a temperature regulating heat exchanger are sequentially communicated to the discharging pipe according to a discharging direction; both the upper part and the bottom of the nitrate fertilizer circulating tank are communicated with a nitrate fertilizer liquid discharging pipe; both the upper part of the bottom of the ammonium nitrate circulating tank are communicated with an ammonium nitrate liquid discharging pipe; a liquid replenishment spraying device is communicated with a water feeding pipe and the discharging pipe through a tee joint. The dust removing and recycling device disclosed by the invention is simple in technical process and is convenient to operate; the dust removal rate can reach 92 percent or above; the influence of brought-out dust on surrounding environment can be greatly reduced.

Description

technical field [0001] The invention relates to a dust removal and recycling device for a granulation tower, which is mainly used in the field of a dust recovery device and a recycling method at the top of a multipurpose granulation tower. Background technique [0002] After the State Council General Office (2002) No. 52 "Notice on Further Strengthening the Safety Management of Civilian Explosives" was issued, the production and sales of agricultural ammonium nitrate products were stopped. The demand for ammonium nitrate has been greatly reduced, forcing ammonium nitrate production enterprises to seize the time to modify ammonium nitrate. Most enterprises have built multi-purpose granulation towers that can be used for both ammonium nitrate granulation and nitro compound fertilizer granulation. One tower It is multi-purpose, and can produce ammonium nitrate or nitro compound fertilizer in stages according to market needs. [0003] Whether it is to produce ammonium nitrate, ...

AI Technical Summary

Problems solved by technology

This treatment method has the following problems: firstly, after the dust is absorbed by water for one time, the dust content of the tower tail gas is still high, which cannot meet the environmental protection standard, and it also causes a lot of material loss, resulting in waste of resources; secondly, it cannot Adjustment, respectively recovering ammonium nitrate and nitro fertilizer washing solution; the solution concentration of recycled materials is low, and the water content is high, which will adversely affect the water content of nitro fertilizer products after being reused in the production system

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