Contaminated acid treatment method for acid production from pyrite concentrate
A processing method and technology of sulfur concentrate, applied in chemical instruments and methods, sulfur trioxide/sulfuric acid, sulfur compounds, etc., can solve problems such as pulverization, production and environmental impact, catalyst poisoning, etc.
Active Publication Date: 2017-12-01
HUBEI NEWYANGFENG FERTILIZER STOCK
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] At present, dilute acid closed pickling is used in the purification section of sulfuric sand acid production, which will produce dirty acid with a concentration of about 10%. The dirty acid mainly contains sulfuric acid slag solid waste, dilute sulfuric acid with a concentration of about 10%, and arsenic, Heavy metals such as fluorine, arsenic and fluorine entering the production system will cause catalyst poisoning and pulverization. The concentration of 10% dilute sulfuric acid is low, making it difficult to use, and about 50 tons of dirty acid will be produced every day. If it is not purified and recycled , will have a greater impact on production and environmental protection
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] Such as figure 1 Shown, the concrete steps of the present invention are as follows:
[0016] A. Put the dirty acid in the production of sulfuric acid sand into the gas-liquid separator, start the dosing pump to adjust the flow rate of the positive flocculant to 20-40L / h, and evenly add the positive flocculant to the gas-liquid separator. The liquid separator separates the sulfur dioxide gas and the dilute acid liquid in the dirty acid. The gas separated by the gas-liquid separator is sucked into the packed tower, and the liquid is separated by the gas-liquid separator and reacts with the positive flocculant to make the tiny The particles condense into larger flocs and settle. Observe the water quality at the outlet of the clear liquid of the gas-liquid separator. If it is turbid, increase the flow rate of the flocculant or reduce the amount of dilute acid until the effluent is clear; the effluent is clear, which means that the tiny particles of dirty acid have condensed...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A contaminated acid treatment method for acid production from pyrite concentrate particularly includes the following steps: a) pumping contaminated acid generated during the acid production from pyrite concentrate into a gas liquid separator; starting a dosing pump, regulating flow quantity of a cationic flocculant to be 20-40 L / h, uniformly adding the cationic flocculant to the gas liquid separator, wherein the gas liquid separator separates SO2 gas and dilute acid liquid in the contaminated acid; b) after separation through the gas liquid separator, absorbing the SO2 gas with a packed column, and performing a reaction to the dilute acid liquid with the cationic flocculant in the gas liquid separator, so that micro-particles are flocculated into large floccules which are then settled; c) observing the water quality at a clear liquid outlet of the gas liquid separator, and if turbidity increases, increasing the flow rate of the flocculant or reducing quantity of the dilute acid liquid, and pumping the liquid into a FBL filter until the discharged liquid is clarified. By means of the dilute acid purifying and treatment process for acid production from pyrite concentrate, the filter residue and diluted sulfuric acid after filtration can be utilized without emission of wastewater, thus achieving harmless treatment.
Description
technical field [0001] The invention specifically relates to a method for treating dirty acid used in the production of sulfuric acid sand. Background technique [0002] At present, dilute acid closed pickling is used in the purification section of sulfuric sand acid production, which will produce dirty acid with a concentration of about 10%. The dirty acid mainly contains sulfuric acid slag solid waste, dilute sulfuric acid with a concentration of about 10%, and arsenic, Heavy metals such as fluorine, arsenic and fluorine entering the production system will cause catalyst poisoning and pulverization. The concentration of 10% dilute sulfuric acid is low, making it difficult to use, and about 50 tons of dirty acid will be produced every day. If it is not purified and recycled , will have a greater impact on production and environmental protection. Contents of the invention [0003] The purpose of the present invention is exactly to follow above-mentioned deficiency at pres...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/90
CPCC01B17/901
Inventor 王军胡明峰
Owner HUBEI NEWYANGFENG FERTILIZER STOCK