Filtration

Horizontal Belt Filter

Continuous Vacuum Filtration System for Efficient Cake Washing

The Horizontal Belt Filter is a vacuum filtration system specifically designed for continuous solid–liquid separation and high-efficiency cake washing.
By utilizing a horizontally moving filter cloth in combination with controlled vacuum suction, slurry is processed under stable conditions to form a uniform filter cake. Multi-stage cake washing and dewatering can be applied according to process requirements, effectively reducing mother liquor residue while improving product purity and recovery efficiency.

This equipment is particularly suitable for continuous, high-capacity, long-term industrial operation, and is widely applied in chemical, polymer, and material processing industries requiring efficient solid–liquid separation and consistent cake washing performance.

Structure and Principle

Horizontal belt filter is unique vacuum filter which is specialized in cake washing performance.
Effective cake washing is realized because the filter can replace uniformly mother liquor in wet cake by cake washing liquid. As uniform cake layer are formed continuously, uneven washing can be prevented.
Product cake after filtrated, washed and dehydrated is discharged continuously by means of cake discharge device. And filter cloth is washed continuously by means of cloth washing device in order to prevent clogging of the filter cloth.

Description

The Horizontal Belt Filter integrates vacuum filtration, cake washing, and automatic cake discharge into a single continuous process, making it suitable for applications requiring stable throughput and consistent product quality.

Compared with batch-type filter presses or other intermittent vacuum filtration equipment, this system significantly reduces operational interruptions, labor requirements, and quality fluctuations, making it ideal for high-load industrial production lines.

The equipment can be designed in either open or fully enclosed configurations, depending on process requirements such as organic solvent handling, dust control, or safety regulations.

Features

  • Excellent Cake Washing Performance

The Horizontal Belt Filter continuously forms a uniform and stable filter cake layer, effectively preventing uneven washing or channeling phenomena.
Washing time and washing zone length can be adjusted according to process requirements, enabling high-efficiency and consistent cake washing under continuous operation, thereby improving final product quality.

  • Significant Reduction in Wastewater Treatment Costs

Compared with conventional filtration equipment, the Horizontal Belt Filter provides higher cake washing efficiency, achieving equivalent or superior washing performance while significantly reducing washing water consumption.
Multi-stage counter-current cake washing further minimizes water usage, effectively lowering overall wastewater treatment and operating costs.

  • High Throughput and High Recovery Rate

The equipment is equipped with a dedicated cake discharge mechanism, ensuring stable cake removal and high product recovery.
In addition, filter cloth washing liquid can be recovered and reused as cake washing liquid, allowing complete recovery of the product cake and enhancing overall process throughput in continuous operation.

  • Gas-Tight Structure Design

The system can be configured with a fully enclosed, gas-tight structure, providing a stable and safe operating environment for processing slurries containing organic solvents or volatile substances.
This design supports enhanced process safety management and compliance with stringent environmental and operational regulations.

 

System Flow

1. Continuous slurry feeding

2. Vacuum filtration to form a uniform filter cake

3. Multi-stage cake washing

4. Dewatering of washed cake

5. Automatic cake discharge

6. Filter cloth washing and reuse

Specification

  • Operation mode: Continuous vacuum filtration
  • Filter cloth type: Horizontally moving filter cloth
  • Washing method: Surface spray washing
  • Structural design: Open or enclosed (optional)
  • Filter cloth material: Selected according to process conditions

(Actual specifications are subject to project-specific design.)

Capacity

Processing capacity is designed based on the following parameters:

  • Slurry solids concentration
  • Particle size distribution
  • Required washing efficiency
  • Cake thickness and filter cloth width

The system can be custom-engineered to meet speci

Polymer Materials

  • ABS, MBS, PPS resins
  • Aramid polymers
  • Toner solids

Organic Chemicals and Catalyst Recovery

  • PTA process catalysts
  • BPA process solids
  • Various organic chemical intermediates

Metal and Inorganic Materials

  • Titanium dioxide
  • Alumina and aluminum hydroxide
  • Magnesium hydroxide
  • Secondary battery materials

Other Industrial Materials

  • Activated carbon
  • Zeolite
  • Fly ash and functional powders

 

fic production capacity requirements.

Application

Polymer Materials

  • ABS, MBS, PPS resins
  • Aramid polymers
  • Toner solids

Organic Chemicals and Catalyst Recovery

  • PTA process catalysts
  • BPA process solids
  • Various organic chemical intermediates

Metal and Inorganic Materials

  • Titanium dioxide
  • Alumina and aluminum hydroxide
  • Magnesium hydroxide
  • Secondary battery materials

Other Industrial Materials

  • Activated carbon
  • Zeolite
  • Fly ash and functional powders

Related field & Technology

The Horizontal Belt Filter is often integrated with the following systems:

  • DP crystallizer
  • Escher Wyss Push Type Centrifuge

Technical Information

For proper equipment selection and system design, the following process data should be evaluated:

  • Material properties and solids content
  • Required washing efficiency and residual mother liquor limits
  • Operating temperature, solvent characteristics, and safety requirements
  • Filtrate recovery and discharge conditions

Detailed technical documentation can be provided upon project request.

Others

The Horizontal Belt Filter can be custom-designed for specific process requirements, including enclosed operation, organic solvent systems, and safety control configurations.
It is suitable for industrial applications requiring a balance of high throughput, product quality, and process safety.