BLAST FURNACE INSTALLATION

摘要

A blast furnace installation (100) equipped with a blast furnace body (110), a hot air blowing means (114, 115, etc.) for blowing hot air into the blast furnace body (110) through a tuyere, and a pulverized coal supply means for supplying pulverized coal (2) into the blast furnace body (110) through the tuyere. The pulverized coal (2) is obtained by means of dry distillation of low-grade coal. The pulverized coal supply means is equipped with: a pneumatic conveying means (115-120) for pneumatically conveying the pulverized coal (2) to the tuyere by means of a carrier gas (107) made of a mixture of air (106) and an inert gas (102); a temperature sensor (121) for detecting the temperature of the carrier gas (107) near the tuyere; and a control unit (122) for adjusting the mixing ratio between the air (106) and the inert gas (102) in the carrier gas (107) of the pneumatic conveying means (115-120) on the basis of information from the temperature sensor (121).

主权项

1. A blast furnace installation including:
a blast furnace body; starting material charging means for charging starting material from a top into an interior of the blast furnace body; hot air blowing means for blowing hot air into the interior of the blast furnace body through a tuyere; and pulverized coal supply means for supplying pulverized coal into the interior of the blast furnace body through the tuyere; wherein
the pulverized coal is obtained by means of dry distillation of low-grade coal; andthe pulverized coal supply means includes:
pneumatic conveying means for pneumatically conveying the pulverized coal to the tuyere by means of a carrier gas made of a mixture of air and an inert gas;carrier gas state detection means for detecting a state of the carrier gas near the tuyere; andcontrol means for adjusting a mixing ratio between the air and the inert gas in the carrier gas of the pneumatic conveying means based on information from the carrier gas state detection means.