新彩彩票

Securities abbreviation: Hisago Hi-Tech

Stock Code: 300631

Core technology
Membrane and complete equipment
Continuous outcrossing system
Chromatographic separation system
Air flotation
Mechanical filtration
Advanced oxidation
Electrodialysis
MVR evaporation technology
Membrane cleaning agent
Membrane extraction
Membrane and complete equipment

What is Membrane?

Separation membrane is a special kind of thin layer material with selective permeation function. It can make one or several substances in the fluid permeate, while other substances are impermeable, so as to concentrate and separate and purify. .

The thickness of the film is below 0.5mm, otherwise it cannot be called a film.

Separation membrane technology can achieve separation under the conditions of maintaining the original biological system environment, and can efficiently concentrate and enrich products, effectively remove impurities, and at the same time convenient operation, compact structure, low energy consumption, simplified process, no secondary pollution, Without the need to add chemicals, it has been widely used in the production processes of biomedicine, food and beverage, chemical and petrochemical, environmental water treatment, gas purification, water purification and other industries.

Second, the membrane (Membrane) separation process principle

The selective membrane is used as the separation medium. When a driving force (such as a concentration difference, a pressure difference, or a potential difference) is applied to both sides of the membrane, the raw material-side components selectively pass through the membrane to achieve the purpose of separation and purification. Usually, the raw material side of the membrane is called upstream of the membrane, and the permeate side is called downstream of the side.

膜的分离过程原理

Classification of membrane

Classification basis category

Separation of particle or molecular size

Micro Filtration, Ultra Filtration, Nano Filtration, Reverse Osmosis

Thrust or transmission

a) Using concentration difference as the driving force: Dialysis (DS)

b) Potential difference as the driving force: electrodialysis, ion exchange electrodialysis

c) Static pressure difference as the driving force: Micro Filtration, Ultra Filtration, Reverse Osmosis

d) Using steam pressure as the driving force: membrane distillation, osmotic distillation

Separation of application domain processes

(micro-filtration, MF) Micro -filtration (MF)

(ultra-filtration, UF) Ultra-filtration (UF)

(reverse osmosis, RO) Reverse osmosis (RO)

(Dialysis, DS) Dialysis (DS)

(electro-dialysis, ED) Electro-dialysis (ED)

(NF) Nanomembrane separation (NF)

(affinity filtration, AF) Affinity filtration (AF)

(pervaporation, PV Pervaporation (PV)

Membrane material

a) Organic polymer materials: cellulose esters, polysulfones, polyamides and other materials

b) Inorganic materials: aluminum oxide, titanium oxide, zirconia, silicon carbide, metal, etc.

Membrane (module) morphology

Tube, hollow fiber, flat, roll

Membrane structure

Symmetric Membrane Symmetric Membrane

Asymmetric Membrane Asymmetric Membrane

Composite Membrane Composite Membrane

Fourth, the characteristics of membrane separation technology

(A) advantages

1. Low energy consumption. Membrane separation does not involve phase change, has low energy requirements, and has large differences compared to distillation, crystallization, and evaporation;

2. Mild separation conditions are important for the separation of heat-sensitive substances;

3. Convenient operation, compact structure, low maintenance cost and easy automation.

(Two) disadvantages

1. Membrane surface is prone to contamination, which reduces the membrane separation performance. Therefore, a membrane cleaning method that is compatible with the process needs to be adopted

2. Stability, chemical resistance, heat resistance and solvent resistance are limited, so the range of use is limited;

3. Separate membrane separation technology has limited functions and needs to be used in conjunction with other separation technologies.

Five, the main application

(1) Refining and denitration of chlor-alkali chemical brine

(Two) coal chemical oil and water separation

(Three) petrochemical catalyst separation

(4) Purification of fine chemical products

(5) Decolorization and purification of antibiotics

(6) Separation and purification of amino acids / organic acids

(7) Chinese herbal medicine extraction

(8) Cleaner Production in the Pharmaceutical Industry

(9) Membrane method-resin sugar

(10) Extraction of natural products

(11) Production of Soy Sauce / Vinegar

(12) Preparation of high-quality edible salt

(13) New energy batteries

(14) Clean Solar Production

(15) Purification of new materials (nano powder purification)

(16) Reuse of water and zero discharge

(17) Ultra-fine water treatment in oil and gas fields

(18) Oily Wastewater

(19) Alkali reuse

(Twenty) acid reuse

(21) Salt Reuse

(22) Reuse of waste oil

(23) Advanced Treatment and Reuse of Municipal Sewage

(24) Comprehensive Treatment of Rural Sewage

(25) Advanced treatment of municipal water supply

(26) Desalted water supply treatment

(27) Industrial gas purification (desulfurization)

(28) High-temperature gas-solid separation

(29) Household Water Purifier

(Thirty) business drinking machine

(31) Drinking water directly from buildings

(32) Emergency water supply




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