Hydrochloride waste regenerating process for spray roasting
Patent Information
- Authority / Receiving Office
- CN Β· China
- Current Assignee / Owner
- WISDRI ENG & RES INC LTD
- Publication Date
- 2006-10-25
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Abstract
Description
technical field
[0001] The invention relates to a regeneration process of hydrochloric acid waste liquid by a spray roasting method. Background technique
[0002] The hydrochloric acid pickling waste liquid of iron and steel enterprises generally adopts the spray roasting method to regenerate the waste acid. The method for regenerating hydrochloric acid waste liquid by the existing spray roasting method comprises the following steps: 1. Water operation: the roasting furnace heats up, and the rinsing water enters the Venturi pre-concentrator, and is sprayed into the roasting furnace by the roasting furnace feed pump to carry out water purification. Operation, the water operation time is about 12 hours. The function of water operation is to simulate acid operation to stabilize the system working condition, and then switch to acid operation, so that the acid regeneration system can run stably; 2. Acid operation: stop supplying Replenishing rinse water, the hydrochloric acid wa...