The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
Mar. 22, 2004
Ashis Mukherjee, Jharkhand, IN;
Subhasis Biswas, Jharkhand, IN;
Manish Kumar, Jharkhand, IN;
Santi Gopal Sahu, Jharkhand, IN;
Nandita Choudhury, Jharkhand, IN;
Ashim Choudhury, Jharkhand, IN;
Kalyan Sen, Jharkhand, IN;
Ashis Mukherjee, Jharkhand, IN;
Subhasis Biswas, Jharkhand, IN;
Manish Kumar, Jharkhand, IN;
Santi Gopal Sahu, Jharkhand, IN;
Nandita Choudhury, Jharkhand, IN;
Ashim Choudhury, Jharkhand, IN;
Kalyan Sen, Jharkhand, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The present invention provides a device for feeding pulverized coal to a furnace, such as a drop tube furnace. The feeding system consists of a feed hopper, a pneumatic vibrator positioned on the periphery of the feeder hopper, a needle valve arrangement in the said feed hopper, a depth gauge micrometer, a distribution chamber with primary and secondary airline at the bottom of the said feed hopper. Adjusting the pressure of compressed air allows setting of the frequency of vibration of the pneumatic vibrator. The needle valve arrangement in conjunction with the vibratory hopper controls the feed rate. The rate of coal flow is measured by the depth gauge micrometer. The distribution chamber with primary and secondary airline at the bottom of the said feed hopper allows uniform mixing of air with coal before being charged into the furnace reactor.