Combustion Research Associates

CRA offers Wet type Chemical Scrubbers to provide clean gases to combustion process. These scrubber systems are based on Caustic (NaOH) Treatment and are very popular for their advantages which are unparalleled as compared to other scrubbing methods. It starts the scrubbing immediately on start thus has almost zero down time. For plants where the gases are not available throughout the day and have frequent ON/OFF operations, chemical wet scrubbers are very effective.

FEATURES

• Very effective & selective absorption of H₂S
• Total integrated systems Designed for long life & least maintenance
• Fully customized & cost effective solutions as per project requirements
• Good performance even with fluctuation in Gas flow
• Zero liquid discharge

Biogas is produced by anaerobic digestion of organic waste and mainly consists of Methane and Carbon Dioxide. Due to its Methane content, it has a high potential to be used as replacement of Natural Gas after improving the Methane level > 90% in the gas. The process of enhancing the Methane level in the Biogas is termed as Biogas upgrading.

An upgraded Biogas, known as Bio-Methane or Bio-CNG, can be utilized as renewable energy source as Vehicle fuel, Grid gas, Combined Heat and Power Plants or Process industries.

CRA provides the most comprehensive total solution for biogas upgrading.

CRA manufactures Biogas upgrading module as containerized, compact and fully automatic system.

FEATURES

• Maximum returns from Biogas.
• Zero emission system
• Fully automatic control of the process
• Continuous monitoring of the gas quality
• Low payback period
• High performance, consistent output of gas.

High purity methane up to 99% can be provided

DRY SCRUBBER

CRA design & manufactures Dry Scrubbers to provide clean gases to combustion process. These scrubber systems use activated carbon which absorbs hydrogen sulphide from gas by facilitating a chemical reaction in the scrubber tank.

FEATURES

An auto drain valve system is responsible for maintenance the liquid level in tank. If the level of liquid rises above the design valve, the auto drain system actuates and a release the excess gas or liquid.

· This is suitable for tanks, reactors, moisture traps, gas holders etc

· Very reliable

· Stainless construction

· Customize system available

· Suitable for pressure up to 2 Bar

· Highly resistant to dust and corrosion

· Operates reliably

CRA design & manufactures wide range of gas boosters as per the application and utility.

Pressure boosting is required before the gas can be utilized. The system consists of Blower/Compressor mounted on skid with all necessary Instrumentations, drivers & Motors and control panel. The Unit is a compact, pre-piped, pre-wired, skid mounted packaged system and can be easily installed and commissioned at the project site.

FEATURES

• Fully automatic system
• Necessary instrumentation provided
• Synchronization b/w demand & supply of the gas
• Compact with low foot-prints
• Models available with Single or Multiple boosters on same skid
• Pressure ranging from 0 – 3.5 Bar
• Model & engineering done as per client’s requirement

Direct acting pressure/vacuum relief valves and breather valves are designed with the focus on tank protection.

We manufacture a wide array of systems that include pressure only, vacuum only and combined pressure and vacuum valves. We also allow for either flanged outlets or venting to the atmosphere.

Open & elevated flare systems are mainly designed to eliminate potential ground level fire hazard. In open elevated flare system combustion takes place at the top of the discharge stack. CRA has over two decades of experience in providing engineering solution for Biogas, Syn gas, Producer gas or any other waste gas. CRA design and manufactures flare systems as per the API/ASME standards to meet the international standards and as per the environmental norms.

FEATURES

· Improved aspirator burner design for high efficiency & smokeless operation.

· Continuous or intermittent pilot as per the process requirement.

· Over 20 years of expertise in the gas handling & flaring.

· Available with Derrick, Guy-wired & Self supported structures.

· Designed for Long life & low maintenance.

· Modular design for ease of installation.

· Approved by leading consultants.

Areas of application include waste gases from Effluent/Sewerage/ Waste Water Treatment Plants, Biomass Installations, Landfills etc.

Biological Scrubber

CRA manufactures BIOLOGICAL SCRUBBER in technical collaboration with

M/s S & H Umweltengineering, Germany.

They are pioneers in design & manufacturing of biological scrubbers with more than 200 installations worldwide for different applications and working environments.

The biological desulphurization operating on the principles of a biotrickling filter using sulphur bacteria (thiobacillus) to remove the H₂S. The process is totally chemical free and has discharge which can be used as fertilizers. The intensive scrubbing process allows very high H₂S reduction rate.

Two types of Biological Scrubbers are offered:

1. Classic® – Liquid discharge product of mild sulphuric acid

2. SulphPur® – Proprietary technology for elemental Sulphur discharge