Stabilizing treatment of circulating water
DESCRIPTION OF THE TECHNOLOGY
Water Circulation System Service Business Unit performs the following types of work:
- development and introduction of effective chemical solutions for reagent treatment of water circulation cycles at iron and steel plants, oil and gas processing, chemical and petrochemical facilities;
- additional cleaning of dirty water circulation cycles from suspended solids, oil products and other specific contaminants by means of coagulants and flocculants
- development of reagent treatment programs, supply of necessary equipment for preparation and dosing of reagents and monitoring systems;
- reagent treatment services (by employees of separate subdivisions).
- Examination of a water supply system of a facility with the purpose of study of condition and technological features of water circulation cycles;
- Laboratory selection of the most effective reagents and their dosages under conditions that maximally reproduce conditions of a particular production;
- Development of a scientifically grounded program of reagent treatment of water subject to the type of a water supply system, initial water composition in the system, customer's requirements to water quality;
- Conduct of pilot tests of reagents;
- Supply, installation and further constant maintenance of dosimeters and installations, carried out by service engineers of the company;
- Timely supply of a wide range of own chemical products;
- Constant monitoring of water quality, corrosion rate, scaling and bio-contamination processes.
WORK STAGES
USED TECHNOLOGIES
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FOR PROTECTION OF WATER-COOLED TECHNOLOGICAL EQUIPMENT FROM CORROSION, SCALING, BIOCONTAMINATION AND TREATMENT OF WATER AGAINST VARIOUS CONTAMINANTS
- SCIMOL WS™ corrosion inhibitors
- DESCUM-2™ scale inhibitors
- ATREN-bio™ bactericides
- ATREN-bd™ bio dispersants
- DECLEAVE-M™ coagulants
- SEURVEY FL™ flocculants
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AUTOMATIC CHEMICAL DOSING AND MONITORING SYSTEMS
The system allows to:
- measure and control the following parameters apart from the main parameters (flow, temperature, pressure, etc.):
- рН;
- electrical conductivity;
- water shutdown;
- corrosion rate;
- turbidity, chlorine content, chemicals content;
- thickness of the biological film;
- biological contamination (total microbial count).
- Calculate vaporization coefficient, control blowdown water and feed water;
- Control reactant treatment process.
The system can be fully integrated into automatic process control system of the plant.
Competent management of the reverse water supply system will allow to:
- reduce consumption of fresh river water and waste water discharges;
- monitor the quality of circulating and feed water;
- create a database of reverse water supply system operation and circulating water quality parameters;
- meet the standard requirements
CORROSION INHIBITORS
the effect of corrosion inhibitor during oil production, transportation, and treatment
the effect of corrosion inhibitor during oil production, transportation, and treatment
SCALE INHIBITORS
the effect of SCALE INHIBITORS during oil production, transportation, and treatment
the effect of SCALE INHIBITORS during oil production, transportation, and treatment
METALLURGICAL PLANT (THE REPUBLIC OF UZBEKISTAN)
Cooperation of the Metallurgical Plant and Water Circulation System Service Business Unit started in 2014 from complex energy inspection (inspection of heat and power supply networks) and inspection of water services. The following types of work were carried out within the framework of this cooperation:
- Calculation of heat and energy consumption;
- Calculation of heat and energy losses in networks;
- Determination of current dependencies of heat and energy consumption on the volume of output;
- Hydraulic calculation;
- Determination of temperature regimes at the place of production;
- Determination of corrosiveness and scaling intensity of circulating and feed water;
- Determination of biological contamination of circulating and feed water;
- Analysis of the chemical composition of circulating and feed water of water circulation cycles.
In 2015 pilot tests of reagents were performed with respect to the water-circulation circuit of the oxygen compressor shop.
Results:
- Complex application of reagents enabled to accomplish identified goals on reduction of corrosion and scaling processes, biological fouling and also ensured compliance with standard operating parameters of compressor equipment and prevention of clogging of heat exchange equipment;
- Based on results of pilot industrial tests a program was developed for reagent treatment of the water-circulation circuit of the oxygen compressor shop, which was implemented in 2015 and has been held to the present day.
Based on the inspection results a report was prepared and recommendations were issued indicating corrective measures aimed at solving the identified problems.
Complex application of reagents allowed to accomplish identified goals for reducing corrosion and scaling processes, biological fouling and also ensured compliance with standard operating parameters of compressor equipment and prevention of clogging of heat exchange equipment.
Based on results of pilot industrial tests a program was developed for reagent treatment of the water-circulation circuit of the oxygen compressor shop, which was implemented in 2015 and has been held to the present day.
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