Feeding system for high-temperature filter bag in production technology of titanium dioxide employing chlorination process

The invention discloses a feeding system for a high-temperature filter bag in a production technology of titanium dioxide employing a chlorination process. The system comprises the high-temperature filter bag, a feeding pipe, a base material pulping device, a first nitrogen supply device, a second nitrogen supply device and a sampling device, wherein the high-temperature filter bag is provided with an oxidation product inlet, a titanium dioxide outlet and a chlorine outlet containing oxygen; the feeding pipe is provided with a first rotary valve and a second rotary valve; the base material pulping device is provided with a titanium dioxide inlet, a desalted water inlet and a slurry outlet; the first nitrogen supply device is provided with a first nitrogen master pipe, a first nitrogen branch pipe and a second nitrogen branch pipe; the first nitrogen master pipe is provided with a first valve; the second nitrogen branch pipe is provided with a second valve; the second nitrogen supply device is provided with a second nitrogen master pipe, a third nitrogen branch pipe and a fourth nitrogen branch pipe; the second nitrogen master pipe is provided with a third valve; the third nitrogen branch pipe is provided with a fourth valve; the fourth nitrogen branch pipe is provided with a fifth valve; and the sampling device is connected with the fourth nitrogen branch pipe. By adopting the system, the problems that dry titanium dioxide cannot be taken in a production process of titanium dioxide employing a chlorination process and the sampling difficulty is large are effectively solved.