Address: product efficacy, solve the following problems from the source:
1. Ammonia water has high oil content and high suspended solids;
2. Clogging of ammonia tower and heat exchanger caused by tar deposition;
3. The filter is blocked, drained and cleaned frequently;
4. The nozzle of coke oven bridge pipe is blocked;
5. The water content of tar is high, the ash content exceeds the standard, and the viscosity is high;
6. Tar deposit at the outlet of blower;
7. The yield of tar is low;
8. High COD of biochemical wastewater;
9. The content of tar mist in the gas exceeds the standard
We believe that we can achieve the following goals through the implementation of this chemical enhanced process plan and the improvement of on-site process operation:
1. The ammonia water is cleaner and less easily attached to the heat exchanger and ammonia tower tray, which significantly reduces the cleaning frequency of the heat exchanger and ammonia tower.
2. The water content of tar will decrease, and the quinoline insolubles will also decrease.
3. The viscosity of tar is decreased, which makes it easier to separate tar and ammonia in large tank, and the possibility of deposition on the wall of primary cooler is greatly reduced.
Better spray effect and cleaner primary cooler will reduce the outlet temperature of primary cooler and reduce the heat load of primary cooler.
5. Reduce the cleaning workload of the spray system of the main gas gathering pipe and the main gas gathering pipe.
It is a better way to dehydrate tar with medicament: tar and circulating ammonia enter the big tank of tar separation in a emulsifying state. If there is no other solution that can stabilize this emulsification state to be introduced into the large tank, the ammonia water and tar can be separated easily in the large tank. Although this separation can be very fast, there is still an emulsion layer containing tar, coal powder, coke powder and ammonia water in the large tank. If the time is long enough, these substances can continue to separate. Because it is impossible to have such a long stay time in the actual operation. So there are often some impurities in the emulsion and ammonia water leave the tar ammonia water tank together. The tar demulsifier provided by our company can destroy the equilibrium state in the emulsified layer and strengthen the separation effect, so that customers can get less emulsified layer. It is possible to reduce the possibility of entrainment into circulating ammonia water. At the same time, the waste liquid leading to the large ammonia tar separation tank will also maintain the emulsion state of the ammonia tar. In these cases, these chemicals of our company can help reduce this emulsification. Depending on the waste, more dosing may be required. The tar demulsifier provided by our company is also a kind of binder reducing agent. It will form a film on the surface of tar to greatly reduce the cohesiveness of tar. ,
Through the implementation of the company's chemical enhancement process plan and the improvement of on-site process operation, we can achieve the following goals:
Measurable return on Value:
The water content of tar will decrease, and the quinoline insolubles will decrease;
The viscosity of tar decreased;
The quality of ammonia water is cleaner because of its low oil content and suspended solids.
Ammonia tower and heat exchanger
It is not easy to attach to the heat exchanger and ammonia tower tray;
The cleaning frequency of heat exchanger and the oil discharging frequency of ammonia distillation tower are significantly reduced;
It can reduce the cost of cleaning heat exchanger and ammonia tower.
It is easier to separate tar and ammonia in a large tank, and the possibility of tar deposition on the wall of primary cooler is greatly reduced;
To achieve better spraying effect and good primary cooling resistance;
The gas outlet temperature of the primary cooler is reduced, and the heat load of the primary cooler is effectively reduced;
The cleaning frequency is extended and the cleaning cost is reduced.
Coke oven nozzle and gas header
Greatly reduce the blockage of ammonia water nozzle, maintain ammonia water spray volume, and stabilize the cooling temperature of raw gas;
Reduce the cleaning workload of spray system and gas header.
Pressure turnover plate
More flexible, strengthen coke oven pressure control, reduce gas leakage.
Tar ammonia water separation tank
The production of tar residue is reduced, the tar production is increased correspondingly, and the cost of tar residue treatment is reduced.
Corresponding energy consumption reduction
When the water content of tar decreases, the amount of steam used to maintain the temperature of tar storage tank will be reduced;
The decrease of water content in tar will reduce the energy consumption of dehydration equipment such as super centrifuge;
With a good outlet temperature of the primary cooler, the coke oven gas with lower temperature can be obtained, and the volume of the gas will be reduced, so that the energy consumption of the coke oven gas in the discharge process can be reduced
1.1 the tar content in ammonia water decreased from 420.7mg/l to 178.3mg/l, with a decrease rate of 57.6%; the suspended matter content in ammonia water decreased from 1602.1mg/l to 290.1mg/l, with a decrease rate of 81.9%;
1.2 the water content of the intermediate tank has been reduced from 7.98% to 4.37%, down 45.2%; the water content of the tar storage tank has been reduced from 4.39% to 3.30%, down 24.8%.
1.3 the yield of tar increased by 0.024% on average, and the yield of tar increased by 42.3t on average every month;
1.4 oil residue and other substances in the system have also been cleaned up in a large amount, with a total of about 200 tons of coke oil residue removed;
1.5 it is conducive to the production of coking workshop, reducing the frequency of clearing gas collection pipe and improving the dust removal effect of furnace top;
1.6 it is conducive to the smooth production of phenol removal and ammonia evaporation process, bringing huge environmental protection benefits;
1.7 as the water content of tar decreases, the water content of tar storage tank decreases, saving steam consumption.
address：Cangzhou port economic and Technological
Development Zone, Hebei Province, China