RU-2026109596-A - METHOD AND APPARATUS FOR ACCURATE CALCULATION OF THE BURNOUT LOSS INDICATOR DURING DRY COKE QUENCHING DURING OPERATION

Inventors

• ЧЖАН, Шуан
• ДУАНЬ, Яньцюань
• ЯН, Цзюньфэн
• Ян, Кай
• ЮАНЬ, Чаохуэй
• ЧЖАН, Вэньчжэн
• ЦЗЯН, Вэньбо
• МА, Юэ

Assignees

• ЭКР КОКИНГ энд РЕФРАКТОРИ ИНЖИНИРИНГ КОНСАЛТИНГ КОРПОРЕЙШН (ДАЛЯНЬ), ЭмСиСи

Dates

Publication Date

20260506

Application Date

20240820

Priority Date

20231031

Claims (20)

1. 1. A method for accurately calculating the burnout loss rate during dry coke quenching, based on the following principles:
2. 1) the carbon entering the dry coke quenching system includes: carbon in CO2 in the inlet air, carbon in the loaded hot coke, and carbon in CO in the residual volatile matter of the loaded hot coke;
3. 2) the carbon removed from the dry coke quenching system includes: carbon in the discharged cooled coke, carbon in coke dust from the primary dust collector, secondary dust collector and environmental dust collection system and carbon in CO and CO2 in the exhaust gas;
4. 3) the amount of carbon entering the coke dry quenching system is equal to the amount of carbon leaving the coke dry quenching system; and
5. the amount of carbon loss from burnout is equal to the amount of carbon in the loaded hot coke minus the amount of carbon in the discharged cooled coke and minus the amount of carbon in all coke dust;
6. Moreover, the formulas for the precise calculation of the burnout loss indicator during dry coke quenching are presented below:
7. the value of C (burnout loss) of carbon burnout loss is equal to the carbon content of CO and CO2 in the exhaust gas minus the carbon content of CO2 in the intake air and minus the carbon content of CO in the residual volatile matter of the hot coke being charged; and
8. the burnout loss rate during dry coke quenching is equal to the ratio of the amount of carbon burnout loss to the total amount of coke loaded into the dry coke quenching chamber;
9. where, except that the C (burnout loss) value of the carbon burnout loss and the coke dry quenching burnout loss index are unknown data, all other parameters for calculating the coke dry quenching burnout loss index are known data obtained by performing a direct or indirect calculation using data measured during operation.
10. 2. A method for accurately calculating during operation the indicator of losses from burnout during dry quenching of coke according to paragraph 1, characterized in that the carbon content in CO in the residual volatile substances of the loaded hot coke is obtained in the following way:
11. the amount of residual volatile matter in the loaded hot coke is taken into account based on the specified ratio A of the amount of residual volatile matter to the amount of hot coke, where CO is a specified proportion B of the amount of residual volatile matter in the loaded hot coke; the carbon content in CO in the residual volatile matter in the loaded hot coke is calculated using the following formula:
12. C (residual volatile matter) = (C (cooled coke) + C (coke dust) + C (burnout losses) ) × A × B × 12 ÷ 22.4 ÷ 1000,
13. where C (residual volatiles) is the mass flow rate (kg/h) of carbon in CO in the residual volatiles of the hot coke being fed;
14. C (cooled coke) represents the amount of cooled coke discharged (kg/h);
15. C (coke dust) is the amount (kg/h) of coke dust discharged from the dry coke quenching system; and
16. C (burnout loss) is the amount of carbon burnout loss (kg/h).
17. 3. A method for accurately calculating during operation the indicator of losses from burnout during dry quenching of coke according to paragraph 1, characterized in that the carbon content in CO and CO2 in the exhaust gas is obtained in the following way:
18. The flow rate of the exhaust gas is measured during operation by a flow meter, the content of CO and CO2 in the exhaust gas is measured by a gas analyzer at the inlet of the dry coke quenching chamber, and the content of carbon in CO and CO2 in the exhaust gas is calculated using the following formula:
19. C (off-gas) = Q (off-gas) × (CO% (off-gas) + CO 2 % (off-gas) ) × 12 ÷ 22.4,
20. where C (exhaust gas) is the mass flow rate (kg/h) of carbon in CO and CO2 in the exhaust gas;