Metal Flue Gas Treatment System

Selection Manual of Single Ash Hopper Dust Collector JMC-5II-6

1. Intermetallic Compound Porous Membrane Material Technology

The porous/membrane materials of intermetallic compounds were prepared by Kirkendall effect caused by partial diffusion between elements;

The material problem in the field of high temperature gas filtration has been solved in the world.

Based on the atomic-scale partial diffusion reaction synthesis technology, the pore structure can be accurately regulated at the micron/submicron level, so that the material has a uniform pore diameter distribution, high filtration accuracy, high open porosity, small zigzagging factor and low filtration resistance.

The unique metal bond + covalent bond mixed bond crystal has the advantages of both metal and ceramic materials, with excellent chemical stability, thermal stability, mechanical and physical properties, machinability, thermal conductivity and electrical conductivity.

The material preparation process is environmentally friendly, the whole life cycle of the material is environmentally friendly, recyclable and high cost performance.

2. Excellent Properties of Membrane Materials

Metallic porous materials:

(Ni, Ti, Stainless Steel)

Advantages: High mechanical properties at room temperature, good machinability

Disadvantages: Low mechanical properties at high temperature, poor resistance to environmental corrosion, low resistance to high temperature oxidation, low porosity accuracy

Ceramic porous material:

(Al2O3, SiO2,SiC)

Advantages: high mechanical properties at high temperature, good selective resistance to environmental

corrosion, excellent resistance to high temperature oxidation, high porosity accuracy

(Porous membrane can be made)

Disadvantages: room temperature brittle is serious, can not be machined, can not be welded

Intermetallic compounds

Porous materials:

(Ti-Al, Fe-Al, Ni-Al)

Features: Good mechanical properties at room temperature, high mechanical properties at high temperature, good machinability, weldable connection, good resistance to environmental corrosion, high temperature oxidation resistance, high porosity precision.

3. Flexible Membrane

Introduction ofFlexible Membrane

The core of the flexible metal film separation technology is the intermetallic compound porous film material, which is in sheet form, the thickness of 0.5 ~ 0.8mm, Soft and crimp molding , has the characteristics of good mechanical properties, high porosity, high separation efficiency, large flux and low filtration resistance. Suitable for a wide range of temperature, high precision requirements of the gas body dust removal, widely used in valuable dust recovery, medium-high temperature separation for gas and solid , is the bag dust removal and electric dust removal technology upgrade products, to solve the low filtration accuracy, cloth bag burning bag, unit area processing capacity is insufficient, equipment covers an area of large and so on.

Flexible Membrane Separation Techniques-- Principle

The dust removal mechanism of the flexible metal membrane dust removal system is: the high temperature gas containing dust enters the filter, the dust is intercepted by the flexible membrane, and the clean gas is sent to the subsequent process through the membrane hole. The filter cake formed by the dust being intercepted by the flexible membrane is peeled off by blowback Into the ash bin for recycling.

4. Comparison Advantages of Flexible Membrane

5. Flexible Membrane Features

1,High temperature resistance: 400℃ (no burning bag);

2,Corrosion resistance: Corrosion resistance to H2S,SO2,SO3, etc.

3,High precision: 0.1μm, membrane aperture 10μm; Up to < 5mg/Nm3 after filtration;

4,Large flux: the flux per unit membrane area is more than 1.5 times that of cloth bag;

5,Low resistance: the same gas volume is treated, the resistance is 300Pa lower than that of the cloth bag, and the power consumption is saved about 10%;

6,Smooth surface: it is easier to reverse blow the ash (the bag is serious sticky in ash);

7, Long life: no damage in normal use (life longer than high-grade bags 1-2 years);

8,Good environmental protection: the same gas volume equipment covers an area and space of about 1/2 of the cloth bag, and consumes about steel

Save 1/2, after the expiration of the filter bag can be recycled metal resources, no secondary pollution of the bag.

6. Rigid Membrane

Filtration Systemof Rigid Membrane

① Filter element high temperature oxidation resistance, vulcanization resistance, thermal vibration resistance, wear resistance;

② Intake low temperature protection;

③ Anti-condensation, anti-tar paste membrane;

④ High temperature back blowing online , online automatic ash discharge;

⑤ Automatic detection and control.

Advantages of Rigid Membrane

① The filter element is simple and convenient to install and high performance in seal.

② The filter element is resistant to high temperature, can be stable filtration at 200℃ -----800 ℃, energy saving, no paste membrane;

③ Thermal shock resistance of the filter element, good resistance to pressure volatility, adapt to system temperature and pressure fluctuations;

④ The filter element is resistant to high temperature oxidation and high temperature vulcanization corrosion, and is widely used in high temperature coal gas and all kinds of industrial kiln gas purification;

⑤ Filter element anti-carbonization, no high temperature catalytic cracking.

7. Filter Element for Gas Filtration

Flexible Membrane

Dust Collection Equipment

Rigid Membrane

8. Jet Pulse Cleaning of the Filter Element

High temperature membrane filters are equipped with Venturi tubes positioned on the upper part of each filter element. The Venturi tubes work like a pump, sucking in a large amount of purified gas to clean the filter cartridge. Part of the kinetic energy of the reverse injection is converted into pressure energy, which creates an instantaneous reverse push of the filter gas in the cavity of the filter element, and then overcomes the pressure drop in the direction of filtration and the adhesion of the dust filter cake degree to remove the dust filter cake on the surface of the filter element, to achieve the purpose of online cleaning.

9. Filter Materials and Components

S31603 Fiber Felt

Stainless steel fiber felt is an ideal filtration material in high temperature resistant, corrosion resistant, high precision. Stainless Steel fiber

Felt is made of extremely fine metal fibers (diameter accurate to μm) through non-woven laying, stacking, high temperature sintering

Into, with the following characteristics:

(1) The material has high temperature resistance, corrosion resistance and excellent filtration performance;

(2) the material structure is unique, formed by different aperture layers three-dimensional porous structure, with high porosity, specific surface.It has the characteristics of large volume, uniform distribution of pore size, high contaminant capacity and high filtration accuracy;

(3) Stainless steel fiber felt can effectively make up weaknesses in the metal net ease blocking, vulnerable, can make up for powder

Filter products fragile, the lack of small flow, with features in ordinary filter paper, filter cloth can not be comparable to the temperature, pressure.

S31603 Fiber Felt Filter Bag

(1) Brief:

Using metal fiber felt as filter material. Cylindrical filter element is made by high-precision welding.

(2) Performance:

a. High temperature resistance, corrosion resistance, high strength;

b. Good permeability, initial pressure reduction, high cutting efficiency, The emission concentration can be less than 5mg/m.

c. Online blowback and off-line cleaning, good regeneration effect, long service life;

d. Easy to recycle, can avoid secondary pollution of the environment.

(3) Specifications:

a. Outer diameter D: 10mm~160mm

b. Length L: 50mm~6000mm

c. Accuracy: ≥0.5um

S31603 Fiber Felt High Temperature Dust Collector

S31603 fiber felt high temperature dust collector is widely used in steel, chemical industry, electric power, new energy and other fields.