Dj-k Series Air Filter Development And Application In The Fermentation Industry - Air Filter -

Abstract This paper describes the fermentation of industrial air filters at home

and abroad with the gap, and to PTFE membrane material of DJ-K for the air filter performance and technical parameters are discussed.

1 air filter status 1. 1 fermentation plant in the current use of air filters

China's current pharmaceutical fermentation plant using air filters with glass fiber filter paper filter media, sintered metal membranes, such as polyvinylidene fluoride filter. Most of the domestic manufacturing and a small portion of imports.

On these filter media, the ultra-fine glass fiber filter has been used for decades. It has high filtration efficiency and porosity, air flow rate, especially in the late 80s from the factory to plate-type glass fiber filter paper folded into cylindrical filter, the filter size increases a lot, after the ultra-fine glass fiber filter paper coated with a number of porous materials, the intensity increased, so that the glass fiber filter paper air filter to improve the vitality of a step.

Metal filter 80 in the early 20th century, came later, because of its high strength, high filtration precision, and therefore promote the use of 80 years have been.

When domestic polyvinylidene fluoride membranes after the advent to polyvinylidene fluoride membrane as filter medium folded filter the rapid development in China. Since polyvinylidene fluoride to high-temperature sterilization, aperture small, traffic, drainage and good features, it appeared to be a pharmaceutical welcome.

In the 20th century, China has started trial production of 80 PTFE membrane to filter the air filter. As the PTFE membrane can be pasteurized, aperture small, traffic, hydrophobic and other characteristics, so the domestic to PTFE film as the medium of the air filter is applied in fermentation industry.

1. 2 Status of foreign air filter

Current foreign air filter, represented by PALL and MILLIPORE, the PTFE membrane filter media is the main filtration accuracy of 0.01 . Because of these high-precision filters of foreign than domestic prices higher than 3 - 5 times, so the domestic pharmaceutical import filter to use much.

1. 3 status of the domestic air filter manufacturer

(1) glass fiber filter paper as the filter media air filter filtration accuracy is not high, intensity difference, humidity and poor, when the air is humid, the glass fiber filter significantly reduced the filtration accuracy.

(2) to domestic polyvinylidene fluoride membrane and the PTFE membrane to filter the air filter pore size uniformity, porosity and abroad more than a certain gap. Particularly in the largest pore size and porosity than the gap between foreign PALL and MILLIPORE larger. Therefore, the product specifications they talk about how much filtration efficiency, the number of how many do not speak the bubble point, especially abroad have carried out air filter integrity testing, and domestic air filter still stuck in the mist method, sodium salt method, DOP method , dust particle counting. Domestic air filter also did not say the whole test, this point there is greater than the gap between foreign countries.

2 DJ - K Series Air Filter of

2. 1 The purpose of the development

With the deepening of reform and opening up, China's air filter performance and specifications to be with international standards, the author believes that China's air filter should be with the international brand PALL and MILLIPORE integration. The so-called convergence nothing more than the three norms: the filter media convergence, integration and testing of quality standards for standards.

(1) filter media integration: is the domestic production should be based on PTFE membrane filters for the filter media, because for now, PTFE membrane filter media has a pore size than other small, ventilation volume, hydrophobic and so excellent quality and is currently the best filter medium for the filter media. Therefore, our future production of air filter should be based on PTFE as the main filter media.

(2) quality standards into line: PALL and MILLIPORE the fermentation industry, the filtration precision of 0.01 . the filter flow indicator 10 in 0. 001MPa under pressure 6m3/min. And our country is the usual indicators: Filter precision 0. 5 to 99.9999 percent, or 100, and these standards are set by the filter manufacturer.

(3) testing standards for integration: The integration is important, the current domestic air bubbles air filter test method, oil mist method, sodium salt method, DOP method, such as dust particle counting method, these test methods the existence of such as deficiencies. Oil mist method, sodium salt method, DOP filtration test method is not the finished product testing, even if the filters well filters with the filters are made after the good or bad is also hard to say. Dust particle counting method is to test the air filter in running good or bad, but because of the dust particle count test a lot of human factors is difficult to measure correctly. Another example is the bubble method used to determine the filter is good or bad, but create a good filter after the filter assembly into the standard, which is unknown. Therefore, Bacterial contamination was found after fermentation plant a lot of arguing back and forth thing, everyone says that's not their problem, which has had production brings disadvantages. To this end, I decided to develop plants with international standards of quality DJ-K Series Air Filter.

2. 2 Manufacturing DJ - K series of high-quality air filter attempts

The above objectives, our factory manufacture high-quality filters, first of all have high-quality filter media??? PTFE membrane, membrane manufacturers started our import filters, as imports of PTFE membrane expensive than filters made from cheap imports little difficult to accept the fermentation plant. Later, in the PTFE membrane on the efforts made, we made the PTFE membrane physical and chemical analysis, and used physical and chemical methods for special treatment. Specially treated PTFE membrane had essentially achieved our set targets. And we in the development process, the folded, longitudinal welding, sealing and other key technology side has been improved, through our factory engineering and technical personnel of trial and error, and finally made the DJ-K-type air filter. The various technical indicators have been close to the level of international brands PALL and MILLI2PORE.

Now our DJ - K series air filter has been around, DJ-K series air filter filtration system as shown, which includes the DJ - KZ steam filters, DJ-KY pre-filter and DJ - KF Jing filter composed of three parts. Steam filter medium for the fine stainless steel fibers; pre-filter media is polypropylene membrane: fine filter medium for the PTFE membrane, made of stainless steel shell with a 304. DJ - K series filters the air flow from 0. 5m3 / min? 200m3 / min.

2. 3 DJ - K Series Air Filter Features

by: gaga

POST COMMENT

Call Of Duty In 2008 Year-end Inventory Application Times Router - Routers - Communications Industry Case Appraisal Method Of Applications Choosing the Right Pipe for Underground Utility Applications How to Deduct Fees From Your CPA Application The application of UPS Power Supplies in Enterprise Job Application Mpeg-4 Standard And Its Application In Multimedia-mpeg-4, Multimedia, Video Coding - Communications HTC Legend - Ultimate Handset with High-tech Features and Useful Applications How To Choose A Water Flow Meter For Your Application Android Application Development- Reliable And Hassle Free HTC Mega - a smart choice with mega applications Different Applications of 16gb micro sd SD Card And its Applications