CN103030837B

CN103030837B - Ultrafine methenamine production process

Info

Publication number: CN103030837B
Application number: CN201210073625.1A
Authority: CN
Inventors: 俞宏伟; 方林木; 崔涛
Original assignee: ZHEJIANG JINJU CHEMICAL CO Ltd
Current assignee: ZHEJIANG JINJU CHEMICAL CO Ltd
Priority date: 2012-03-20
Filing date: 2012-03-20
Publication date: 2014-04-16
Anticipated expiration: 2032-03-20
Also published as: CN103030837A

Abstract

The invention relates to an ultrafine methenamine production process. At present, products of the domestic methenamine production process are generally grain-shaped products, have particle sizes which are in commonly 150-200 mu m, and are directly provided to consumers, and the products are not further processed. The production process has the following steps: firstly, feeding methenamine raw materials into a material tank and then sending into a treater to carry out a surface modification treatment; secondly, introducing inert gas into a production device, and recycling by a fan; after the surface modification treatment is finished, sending the methenamine to a crusher through a feed tank to be crushed, wherein the particle size after crushing is controlled in the 5-70 mu m; finally, feeding the crushed methenamine enters into a separator and a dust collector to be separated, so as to obtain the finished products in the separator and the dust collector. The methenamine prepared by the method is applied to thermosetting phenolic resin, so that the mechanical strengths and the electric insulation properties of high-end products which are prepared by the thermosetting phenolic resin are improved.

Description

A kind of ultra-fine urotropine production technique

Technical field

The present invention relates to urotropine producing process, be specifically related to a kind of ultra-fine urotropine production technique.

Background technology

The important use of urotropine is the solidifying agent as resol.Resol not only can be for the manufacture of moulding compound, stratified plastics, porous plastics, cellularpiston etc., can also paint raw materials, glue paste, protection against corrosion be basic ion exchange resin with clay and the resol of take etc.Phenoplast and phenolic aldehyde insulation compound are widely used in machinery and electrical industry, its fast-developing history proves, exactly because its physical strength after solidifying of resol is high, stable performance, hard, wear-resisting, heat-resisting, resistance to combustion, resistance to most of chemical reagent, water absorbability is low, electrical insulation capability is excellent, dimensional stabilizing, cheap and become a kind of desirable material, and phenoplast are commonly called as " bakelite ".

Along with resol product is in the continuous increase of usage quantity of the product for civilian use, electric equipment products, automobile product and constantly widening of the field of use, the consumption of urotropine is also constantly improving.

Since 2003, along with the recovery of chemical industry, the market value of Chemicals is constantly being gone up, and China has the areas such as the north of resources advantage, large-scale methanol production enterprise constantly starts and goes into operation, as the product in methyl alcohol downstream, it is simple and easy to get that urotropine production has production technology, less investment, the feature of instant effect, market scale is constantly expanding, and it can be converted into solid phase prod by liquid product, regulates well the pressure in line balancing and alleviation market.

The product of current domestic urotropine production technique is generally grains product, and particle diameter generally, at 150-200 μ m, directly offers human consumer, product is not further processed.

As the urotropine of heat-reactive phenolic resin solidifying agent, there is following problem in common particle diameter urotropine:

(1). because urotropine particle is compared with large skewness, cause heat-reactive phenolic resin product physical strength to decline;

(2). because the larger reaction of urotropine particle is incomplete, at high temperature decomposite ammonia, cause heat-reactive phenolic resin product electrical insulation properties to decline.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, a kind of ultra-fine urotropine production technique is provided.

The inventive method is specifically:

A. the incoming stock groove of urotropine raw material, then send into treater and carry out surface modification treatment, adding weight ratio is the agent of 0.05%-0.6% organic surface modification treatment.

B. production equipment passes into rare gas element, by blower fan, recycles, and control pressure is at 0.1-5KPa.

C. the urotropine after modification is sent into crusher for crushing by intake chute, and after pulverizing, granularity is controlled at 5-70 μ m.

D. the urotropine after pulverizing enters separator, fly-ash separator carries out separation;

E. finished product obtains respectively in separator and fly-ash separator.

The ash content of coal≤0.05% in the finished product obtaining in step e, water content≤0.35%.

Beneficial effect of the present invention is: the application of the urotropine that utilizes the inventive method manufacturing in heat-reactive phenolic resin, improves high-end product physical strength, electrical insulation properties that heat-reactive phenolic resin is manufactured.

Accompanying drawing explanation

Fig. 1 is apparatus structure schematic diagram used in the present invention.

In figure: 1, raw material tank; 2, treater; 3, intake chute; 4, pulverizer; 5, separator; 6, discharge port; 7, blower fan; 8, fly-ash separator; 9, displacement pipe; 10, rare gas element.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

As shown in Figure 1, the appliance arrangement that this technique uses comprises raw material tank 1, treater 2, intake chute 3, pulverizer 4, separator 5, blower fan 7, fly-ash separator 8 and displacement pipe 9.

Before whole device work, first utilize displacement pipe 9 that oxygen contained in system is removed, dust explosion prevention, then raw material urotropine enters treater 2 by raw material tank 1, adds organic surface modification treatment agent 0.05-0.6%(weight ratio); At production equipment, pass into rare gas element 10, the airflow circulation of whole system is used, and control pressure is at 0.1-5KPa; Urotropine enters intake chute 3 after surface modification treatment, then sends into pulverizer 4 and pulverize, and after pulverizing, granularity is controlled at 5-70 μ m; The gas that after pulverizing, product up to standard is driven by blower fan 7 is brought separator 5 into, the not separated thinner material getting off enters fly-ash separator 8 with the wind, last gas is connected with pulverizer import by pipeline, recycle, product, by discharge port 6 dischargings of separator 5 and fly-ash separator 8, weighs, stitches bag, packing after discharging.

Claims

1. a ultra-fine urotropine production technique, is characterized in that the method comprises the following steps:

A. the incoming stock groove of urotropine raw material (1), then send into treater (2) and carry out surface modification treatment, adding weight ratio is the agent of 0.05%-0.6% organic surface modification treatment;

B. production equipment passes into rare gas element (10), by blower fan (7), recycles, and control pressure is at 0.1-5KPa;

C. the urotropine after modification is sent in pulverizer (4) and is pulverized by intake chute (3), and after pulverizing, granularity is controlled at 5-70 μ m;

D. the urotropine after pulverizing enters separator (5), fly-ash separator (8) carries out separation;

E. finished product obtains respectively in separator (5) and fly-ash separator (8).

2. a kind of ultra-fine urotropine production technique according to claim 1, is characterized in that: the ash content of coal≤0.05% in the finished product obtaining in step e, water content≤0.35%.