Save "three doses", they are very serious

On March 7th, Yan Bohong, deputy director of the water supply workshop of Daqing Petrochemical Refinery, and Gao Jun, a process technician, talked while measuring the data of reducing the effect of the chemical agent: "We have worked hard in the past two months.
, saving nearly 30 tons of 'three doses' compared with the same period last year, and estimated cost savings of more than 300,000 yuan
.

"

High costs cause heart disease

high cost of heart disease high cost of heart disease

The "three agents" in their mouths refer to corrosion and scale inhibitors, bactericides and sodium hypochlorite
.

The workshop is mainly responsible for the supply of industrial circulating cooling water for the production equipment, and controls the water quality index of the water supply workshop by adding "three agents"

Yan Bohong introduced that corrosion and scale inhibitors are the main agents for circulating water treatment, which can disperse calcium carbonate and calcium phosphate in circulating water and prevent them from forming fouling that blocks heat exchangers
.

The total number of heterotrophic bacteria in the circulating water can reach the control index of more than 105/ml.

"Before, the circulating water was controlled by adding chlorobromide or sodium hypochlorite to control the residual chlorine in the circulating water.
According to the amount of water retained in the circulating water system and the concentration of the bactericide, the bactericide was injected once a week to control the index
of heterotrophic bacteria.

When the leakage is not detected in time and the process is adjusted and changed, the phenomenon of heterotrophic bacteria exceeding the standard will still occur, so that the cost of 'three doses' cannot be reduced

There are 5 circulating water systems in the workshop, with a total water retention of about 30,000 tons.
According to the dosage of 100 mg/L of bactericide, nearly 3 tons of bactericide are needed for one shock dosing.
Nearly 12 tons of fungicides were cast
.

　　Technical research to reduce unit consumption

Technical research to reduce unit consumptionTechnical research to reduce unit consumption

　　The DQ-203 agent used in this workshop is an organophosphorus formula agent with slow-release and scale-inhibiting properties, with unique performance and high price
.

　　The cost of circulating water is mainly generated in the consumption of chemicals.
To reduce costs, the consumption of chemicals must be reduced
.

The leaders of the workshop led the members of the technical team to carry out technical research on the topic of reducing the unit consumption of DQ-203 drugs under the premise of ensuring safe production

　　The technical team analyzed the water quality data and the dosage of DQ-203 in the past five years, and carried out experiments to continuously refine the control range of the total phosphorus index
.

In order to accurately dose DQ-203, the circulating water technology technicians adjust the frequency of the dosing pump in time based on the total phosphorus test data once every 8 hours to achieve accurate dosing

　　Analysis of cause and control indicators

　Analyze cause control indicators　Analyze cause control indicators

　　"To control heterotrophic bacteria in circulating water, use fungicides to continuously add solid bromide bromide and sodium hypochlorite, and alternately dosing non-oxidized organic dibromides and isothiazolinone derivatives fungicides in a combined control plan
.

Since July last year, various The circulating water system has different degrees of abnormal oxygen bacteria indicators exceeding the standard

　　Immediately, the technical team of the workshop collected water quality data, analyzed the reasons, and determined that it was caused by the lack of non-oxidizing bactericides that caused the bacteria to produce antibodies
.

　　In view of the above problems, the workshop plays the role of oxidizing bactericide with strong permeability, which promotes the oxidation reaction of hypobromous acid or hypochlorous acid with metabolic enzymes in bacteria, and achieves the purpose of efficient sterilization
.

The workshop also increased the dosage of bromide chloride and sodium hypochlorite, adjusted the residual chlorine index of the circulating water, and realized the non-oxidizing fungicide without adding or reducing the concentration

　　Yan Bohong said: "This method not only effectively controls the index of heterotrophic bacteria in circulating water, but also reduces the amount of non-oxidizing fungicides with high cost.

From January to February, the workshop saved 27.

72 tons of fungicides and reduced the unit consumption of chemicals by 0.
435 grams.
/ ton, saving 276,000 yuan in pharmaceutical costs
.
”