CN201127854Y

CN201127854Y - Showerhead for spray drying tower

Info

Publication number: CN201127854Y
Application number: CNU2007201573928U
Authority: CN
Inventors: 刘春信; 丁峰; 徐勤国; 赵立峰; 蔡全国; 张海瑜; 程东法; 葛峰; 朱希堂
Original assignee: RUIFENG POLYMER MATERIAL CO Ltd YIYUAN COUNTY
Current assignee: Shandong Ruifeng Polymer Material Co., Ltd.
Priority date: 2007-11-16
Filing date: 2007-11-16
Publication date: 2008-10-08
Anticipated expiration: 2017-11-16

Abstract

The utility model relates to a spray head used by a spray drying tower. The spray drying tower is characterized in that an inner cavity of the spray head is a reverse cone, a feed pipe is connected on the upper end face of the reverse cone-shaped inner cavity along the tangent direction, and a snout is arranged on the lower end face of the reverse cone-shaped inner cavity. Emulsion is sprayed into a vortex chamber of the spray head through a mini-type feed pipe arranged along the tangent direction of the upper end face of the reverse cone under the pressure of a pump, the pipe pressure is controlled between 0.3 to 0.6 bars; materials rotate at a high speed inside the vortex chamber to form vortex flow and then are sprayed out from the snout arranged at the lower part of the reverse cone. Through comparison observation, due to the adoption of the novel spray head, when the spray drying tower is used to make spray drying for the emulsion of high viscosity, the drying rate is improved; meanwhile, the grains of the obtained powdery finished product are even and fine with relatively higher apparent density and excellent powdery fluidity.

Description

The spray drying tower shower nozzle

Technical field

The utility model belongs to emulsion spray-drying field, particularly a kind of spray drying tower shower nozzle.

Background technology

Chemical industry extensively has the liquid material drying and the demand of powdered final products, people have invented numerous drying processes for this reason, be applicable to the drying of various different temperatures, acid-base value, purity, product such as inflammable, wherein use the spray tower drying process, has continuous production, rate of drying is fast, product easily collecting, advantage such as dust is little.

Existing spray tower operation principle is: steam obtains hot-air by heat exchanger with air heat, hot-air feeds from the spray tower bottom, air compressor machine forms negative pressure, hot-air is extracted out from the spray tower top, accelerating hot-air flows, emulsion sprays from the shower nozzle of spray tower top, form the little droplet of liquid, freely fall, fall and be exposed in the hot-air in the process, moisture content rapid evaporation in the droplet, the solid drying in the droplet forms the tiny powdery granule of diameter, below the powdery product collecting packing is finished product at spray tower.But for high viscosity product emulsion (as producing high impact resistant ACR resin), be difficult for flowing, it is big that the liquid globule that forms in the spray process drips diameter, collide easily in the free-falling dry run and be combined into the bigger particle of diameter, make that final powdery product particle diameter is bigger, particle is inhomogeneous, out-of-shape, the particle gap is big, causes indexs such as apparent density undesirable etc.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of spray drying tower shower nozzle, makes high viscosity product emulsion drying obtain evengranular powdery product.

The utility model spray drying tower shower nozzle is characterized in that the shower nozzle internal cavity is back taper, and the tangential direction of the upper bottom surface of back taper internal cavity connects feed pipe, and the bottom surface of back taper internal cavity is a spout.

The utility model does not change the overall structure and the course of work of spray drying tower.Just nozzle structure is improved, make the shower nozzle internal cavity form the minor air cell, spout is provided with some spray orifices.During use, emulsion is pressurizeed by pump, sprays into the minor air cell of shower nozzle along the fine feed pipe of back taper upper bottom surface tangential direction, and pipeline pressure is between the 0.3-0.6 crust, and material forms eddy current in the rotation of eddy current indoor high-speed, is sprayed by back taper bottom spout thereafter.

Through paired observation, after adopting shower nozzle of the present utility model, spray tower is when carrying out the spray-drying of high viscosity emulsion, rate of drying is per hour on average received to such an extent that siccative is brought up to average 810kg by original 650kg, the Powdered finished particle that obtains simultaneously is even, fine and closely woven, apparent density is higher, and powder fluidity is good.The naval stores of producing, the caked phenomenon of plate takes place in transportation also bigger improvement, and client's repercussion is good.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1.

Among the figure: 1 internal cavity, 2 spouts, 3 feed pipes

The specific embodiment

As shown in the figure, spray drying tower shower nozzle of the present utility model, shower nozzle internal cavity 1 is back taper, connects feed pipe 3 along the tangential direction of the upper bottom surface of back taper internal cavity, and the bottom surface of back taper internal cavity is a spout 2, is provided with spray orifice according to common mode on the spout 2.

Claims

1, a kind of spray drying tower shower nozzle is characterized in that the shower nozzle internal cavity is back taper, and the tangential direction of the upper bottom surface of back taper internal cavity connects feed pipe, and the bottom surface of back taper internal cavity is a spout.