Economic benefit analysis of new sulfuric acid recovery equipment to reduce dilute acid concentration

According to the current industrial grade 98% sulfuric acid raw materials, the market price is 800-1200 yuan/ton (raw material prices vary, and some places are higher), due to the soaring price of raw materials, resulting in increased production costs of sulfuric acid use enterprises, so the use of waste sulfuric acid recycling and purification technology is the best choice at present, less investment and quick effect. In some areas, waste acid is handed over to qualified recycling companies for treatment, which costs thousands of yuan per ton, and enterprises that need to treat 20-30 tons of waste sulfuric acid a day will lose 2.25-3.25 million yuan a year.

Hebi Jinxing Quartz Glass Instrument Co., LTD., set more than 30 years of long-term practical experience, through continuous efforts, innovation, pioneering and enterprising, in the old sulfuric acid concentration recycling equipment on the basis of continuous improvement, and finally successfully introduced to the market a new type of energy saving, consumption reduction, environmental protection sulfuric acid concentration recycling equipment. After the use of many customers at home and abroad, it is generally praised, praised the new sulfuric acid concentration recycling equipment compared with the old equipment: energy saving effect is remarkable, low operating cost, high automation, safety and reliability, and has brought rich economic benefits to the enterprise every year.

Taking the new waste sulfuric acid concentration and recycling equipment as an example, the comparison between the new and old equipment is as follows:

First, A brief description of the old waste sulfuric acid concentration and recovery equipment

The old type of waste sulfuric acid concentration equipment to treat a ton of 80% sulfuric acid as an example, the recovery of finished products requires 98%, will produce about 20% dilute sulfuric acid, to treat 20 tons of waste sulfuric acid 80% per day as an example. About 4 tons of dilute sulfuric acid with a concentration of ≥50% will be produced every day, and 1440 tons will be produced in a year. If this acid is returned to the initial 80% of raw materials, it will not only destroy the concentration of raw materials, but also increase the cost of recovery and operation, and the processing capacity will increase every day, resulting in a vicious circle. If the neutral treatment is used, one is a waste of resources, the second is a large consumption of lye, the annual cost of lye treatment reaches 3.36 million yuan/year, and the third is that if it is handed over to a qualified environmental treatment company to deal with, it will also need to deal with 1.8 million yuan/year.

Through the above data, it is not difficult to see that the old equipment processing waste sulfuric acid to produce dilute acid cost will bring great waste of resources and economic losses to the enterprise every year, so it is necessary to replace the old equipment with a new type of device.

Our company wants what users want, urgent users urgent. To this end, the company has successfully developed a new waste sulfuric acid recovery device with low energy consumption and high efficiency after many improvement experiments, which has the following technical characteristics compared with the old equipment:

1, 80% waste sulfuric acid through sulfuric acid concentration equipment recovery concentration of 98%, resulting in dilute acid concentration from the old equipment concentration of 50% reduced to 0.5%-1% below, recovery rate from the old equipment 90%, increased to 99%. According to the calculation of treating 20 tons of 80% waste sulfuric acid every day, 650 tons of sulfuric acid can be recovered in a year, and according to the market price of 800 yuan/ton, it can reduce the sulfuric acid procurement cost for enterprises 800 yuan/ton x650 tons/year = 520,000 yuan.

2. Old waste sulfuric acid recycling equipment, processing a ton of 80% sulfuric acid concentrated to 98%, will produce dilute acid amount of 20% of the finished product, the concentration of about 50%, that is, a ton of raw material concentrated to produce dilute acid about 200 kg returned to the initial raw material, to treat 20 tons of 80% raw material per day, the concentration of finished product 98%, finished product volume 16 tons/day, Produce dilute acid content of about 50%, dilute acid content of 4 tons/day, calculated according to a year: produce dilute sulfuric acid 4 tons/day, there will be 1500 tons per year to be disposed of.

3. The following three conventional disposal methods (taking 20 tons of 80% sulfuric acid recovery to 98% as an example) :

① Return to the original raw material

Annual processing capacity from 80% sulfuric acid 6000 tons +1500 tons (dilute sulfuric acid less than 50%) =7500 tons/year. Increased 1/4 processing capacity, each ton of processing power consumption 450kw calculation, the annual direct consumption of electricity 1500 tons/year x450kw/ ton x0.7 yuan/degree = 472,500 yuan, labor costs more than 100,000 yuan per year, comprehensive annual spending more than 600,000 yuan.

② Lye neutralization method

Each year, 1500 tons of dilute acid with 50% sulfuric acid concentration are produced. If the alkaline neutralization method is adopted, the market price of 32% lye is 1400 yuan/ton. 1 ton of 50% sulfuric acid consumes 3.2 tons of lye, and the treatment of 1500 tons of 50% sulfuric acid consumes 4800 tons of lye. The cost of lye consumed to treat 1500 tons of dilute sulfuric acid per year is 1400 yuan/ton x4800 tons/year =6720000 yuan.

③ Disposal by hazardous waste treatment company

According to the different concentration of dilute sulfuric acid, the treatment cost is 1500-4500 yuan/ton. According to the disposal of 1,500 yuan/ton cost calculation, the annual disposal cost of 2.25 million yuan.

In combination with the above disposal methods, the old waste sulfuric acid concentration and recycling equipment produces a large amount of waste dilute sulfuric acid, and the above disposal methods not only waste a lot of resources, but also the processing cost is quite surprising.

Second, the new waste sulfuric acid recovery equipment technical characteristics

The new concentrated product of waste sulfuric acid reaches 98%, and the concentration of dilute sulfuric acid is reduced from 50% to less than 0.5%-1%, which greatly improves the recovery rate of sulfuric acid and makes good use of resources. According to 20 tons/day 80% sulfuric acid concentration recovery to 98% in addition to the recovery of operating costs, can also save about 1.2 million yuan of sulfuric acid procurement costs for enterprises every year.

Nowadays, environmental protection policies are becoming more and more stringent, requiring enterprises to achieve the principle of energy saving, zero emissions, waste sulfuric acid recycling is the only way for every enterprise.

Hebi Jinxing Quartz Glass Instrument Co., Ltd. has innovatively developed a new type of waste sulfuric acid recovery device LSHS-DF based on years of production experience. Materials using high purity quartz glass material, new materials, new technology, new technology, for domestic and foreign customers to provide 3000 sets of production equipment. The device has a small investment, quick effect, safe and reliable operation of the equipment, the recovery rate of waste sulfuric acid is stable at 99%, and the service life is more than ten years, and it is currently a new waste sulfuric acid recovery production device that has eliminated other materials and types in China. Generally by the trust and praise of users, for customers to reduce production costs, increase efficiency, has been highly praised by the majority of users at home and abroad.