CFS Fully Automatic Filtration System

I. Product Introduction

The CFS fully automatic filtration system—also known as a candle-type (filter cake layer) filtration system, or a bundled tubular filtration system—encompasses tubular filters, precision filters, self-cleaning filters, and similar devices. It operates within a sealed vessel housing multiple filter elements, each sheathed in a specialized filter cloth. As the liquid to be filtered passes through the cloth, solid particles are intercepted. By utilizing the principle of bridging, particles of varying sizes are progressively captured, thereby forming a filter cake layer that meets the required filtration precision standards; this self-formed filter cake layer is then leveraged to facilitate effective filtration.

The CFS fully automated filtration system was independently developed and designed by GreenSun (Shanghai) Environmental Technology Co., Ltd. From the filter element skeleton structure, filter housing seals, and housing clamps to the installation of filter assemblies and the automated operational modes of the system, every aspect features a systematic, standardized design. This approach significantly streamlines the application process, providing customers with optimized and more convenient service.

II. Product Features

The filter element's internal support cage features a six-lobed "plum blossom" design, while its upper and lower ports are precision-manufactured using molds. The filter cloth transitions smoothly over the cage structure, facilitating the complete drainage of liquid from within the central support tube and enhancing the filter element's pressure-bearing and load-bearing capacities. Furthermore, this design aids in the automated drying and discharge of the filter cake; the unique configuration not only ensures greater consistency and reliability in the manufacturing of the filter elements but also optimizes both the adhesion properties during the cake formation phase and the release properties during the cake discharge phase.

III. Application Features

● Fully automated control and completely enclosed design ensure simple operation.

● No consumables required; the filter media automatically regenerates and does not need replacement.

● High filtration efficiency, capable of achieving micron-level filtration.

● Multiple options for cake discharge, allowing for the removal of both slurry and dry solids.

● Capable of processing materials with high solids content.

IV. Product Functions

The liquid feed is conveyed by a material pump into the filtration unit. Driven by a differential pressure, the material passes through the filter cloth; the resulting filtrate flows through a porous, plum-blossom-shaped support skeleton toward the base of the candle elements. The filtrate converges at the bottom of the central pipe, rises, and is discharged via the collection manifold. Throughout the entire filtration process, the filter cake adheres stably to the plum-blossom-petal-shaped candle elements. Automatic cake discharge is achieved by controlling the airflow and pressure of the back-blowing process. Multiple cake discharge options are available, allowing for the discharge of either slurry or dry solids. Furthermore, depending on specific requirements, the system can be configured to perform a wide range of additional functional operations, including pre-coating, circulation filtration, clarification filtration, slurry mixing, washing and volume displacement, multiple in-line washing cycles, thickening, in-tank dissolution, re-filtration, drying, and more.

V. Workflow

1. Pre-filtration

Particles within the material are progressively intercepted—from largest to smallest—and, through a "bridging" effect, form a filter cake layer on the surface of the filtration medium, thereby ensuring that the filtration precision meets the required standards.

2. Filtration Process

During the filtration phase, particles in the material are intercepted by the filter cake layer established during the pre-filtration stage; as the filter cake gradually thickens, the resulting filtrate flows into the clarified liquid tank.

3. Filter Cake Drying

Upon the completion of filtration, the liquid remaining within the vessel is drained. Subsequently, a gas is passed through the filter cake in a forward direction to expel residual liquid, thereby reducing the moisture content of the cake.

4. Cake Removal and Residue Discharge

Once the filter cake drying process is complete, the individual filtration units undergo a back-blowing operation in batches. The filter cake is dislodged by the expansion of the filtration medium, thereby accomplishing the residue discharge process.

Other Optional Features

● Filter Aid Pre-coating and Metered Dosing Process

● Volume-based Batch Processing

● In-line Filter Cake Washing Process

● Atomized Spray Cleaning Process

● Material Thickening Process

VI. General Workflow Diagram

● Filtration of Decolorizing Activated Carbon

● Catalyst Recovery and Filtration

● Filtration of Lithium-ion Battery Electrolyte Additives

● Brine Purification Pre-coat Filtration System

● Filtration of Brine in Epoxy Resin Production

● Filtration of Lithium-ion Battery Electrolyte Additives

● Production of Inorganic Salts

● Removal of Alkaline Salts from Plasticizers

● FCC Filtration in Flue Gas Desulfurization

● Filtration of Calcium Sulfate from Lactic Acid

● Filtration of Adsorbents from PLA (Polylactic Acid)

● Filtration of Oligomers from PGA (Polyglycolic Acid)

● Filtration of Titanium Liquor, Primary Wash, and Secondary Wash in Titanium Dioxide Production

● Polymer Solution Purification and Catalyst Removal

● Catalyst Recovery and Filtration in TDA Hydrogenation

● Decolorization Filtration Following Enzymatic Hydrolysis in Bio-extraction

● Catalyst Recovery and Filtration in TDA Hydrogenation

● Decolorization Filtration Following Enzymatic Hydrolysis in Bio-extraction

● Purification of Copper Sulfate Electrolyte Prior to Electrodeposition in Copper Foil Production

● Pigment Product Purification and Washing

● Regeneration of Dye Intermediates and Purification of Processing Liquids

● Glyphosate Recovery; Recovery of Hydrogenation Catalysts in Agrochemicals

● Removal of Activated Carbon Following Decolorization

● Purification of Refined Lactose Syrup Prior to Crystallization

● Recovery of Vegetable Oil Residues, Activated Bleaching Earth, Activated Carbon, and Hydrogenation Catalysts

● Removal of Activated Carbon, Crystal Purification, and Washing for Antibiotics and Vitamins

● Recovery of Precious Metal Catalysts on Carbon Supports and Raney Nickel

● Filtration of Secondary Bath Water and Washing Water in Viscose Fiber Production

● Desalination and Particle Recovery for PPS, PTAP, and PVC

● Pharmaceutical and Chemical Wastewater Treatment; Cooling Water Circulation and Regeneration

VIII. Product Selection