Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method of recovering sulfur slag and pyrite to make acid

A technology for producing sulfuric acid and pyrite, applied in chemical instruments and methods, sulfur compounds, inorganic chemistry, etc., can solve the problems of boiling furnace scarring and other problems, and achieve the effect of being easily broken

Active Publication Date: 2018-01-30
HUBEI XIANGYUN GROUP CHEM
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, the maximum amount of sulfur slag is used to avoid the accumulation of sulfur slag, which not only does not affect the subsequent process, but also solves the problem of scabbing of the fluidized fluidized furnace

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of recovering sulfur slag and pyrite to make acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Sulfur, a by-product of petroleum refining with a sulfur content of 99%, is used to melt sulfur at 140°C and filter after completion. The filter residue and sulfur sand with a sulfur content of 38% are mixed at a mass ratio of 1:4 and sent to the jaw type together. Crusher for primary crushing. After crushing, it is sent to impact crusher for fine crushing. After crushing, it is sent to sorting screen. The particle size is less than 5mm and sent to fluidized furnace. The boiling furnace reacts with air at about 900°C to produce sulfur dioxide, and the sulfur dioxide gas is dedusted, purified, transformed and absorbed to obtain sulfuric acid.

[0046] Specifically, this method has better economic benefits, and the theoretical calculation is as follows:

[0047] The sulfuric acid plant has consumed 43.53wt of sulfur since its start-up, and the cumulative amount of sulfur slag piled up is 2813.28t. Using this data, it can be calculated that the average production of sulfu...

Embodiment 2

[0054] Embodiment 2 carries out experiments on various conditions, and its method for making acid is basically the same as in Example 1, except that the proportioning of sulfur slag and pyrite is different (by mass ratio): Processing 1: sulfur slag and pyrite The ore is mixed in 1:2, treatment 2: sulfur slag and pyrite are mixed in 1:3, treatment 3: sulfur slag and pyrite are mixed in 3:8, treatment 4: sulfur slag and pyrite are mixed in 1:4 Mixing, treatment 5: sulfur slag and pyrite mixed in 2:9, treatment 6: sulfur slag and pyrite mixed in 1:5, treatment 7: sulfur and pyrite mixed in 1:4, treatment 8: sulfur Iron ore, processing 9: sulfur and pyrite mixed at 1:13, processing 10: sulfur. The statistical cycle of fluidized fluidized furnace scarring is one week, and there are twelve cycles in total. The roasting process is divided into two shifts. The roasting process is operated according to the roasting post regulations (pay attention to removing hidden dangers of scarring)...

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

No PUM Login to View More

Abstract

The invention discloses a method for recycling sulfur residues and pyrite to make acid and a device thereof, and belongs to the technical field of sulfuric acid making. The method comprises the steps that the sulfur residues and the pyrite are mixed and smashed according to the mass ratio of 1 to 3.5-4.5, the smashed mixed materials are sent into a fluid-bed furnace, sulfur dioxide gas is produced, and sulfuric acid is obtained after dedusting, purification, conversion and absorption are conducted, wherein the sulfur residues are waste residues produced in the sulfur melting workshop section of an acid-making process using sulfur after filtration. The invention further discloses a device for achieving the method. The method for recycling the sulfur residues and the pyrite to make the acid and the device thereof have the advantages that the mixed materials are easy to smash, and the danger of catching fire does not exist; the sulfur residues are utilized to the maximum extent, and influence on subsequent processes cannot be caused; the problem that the fluid-bed furnace scabs is solved, and the scab problem does not occur on the condition that the sulfur content is high.

Description

technical field [0001] The invention belongs to the technical field of fertilizer production, and in particular relates to a method and a device for producing acid by recovering sulfur slag and pyrite, in particular to a method and a device for jointly producing acid with sulfur and pyrite. Background technique [0002] Sulfuric acid is the most active binary inorganic acid, which can react with many metals. High-concentration sulfuric acid has strong water absorption and can be used as a dehydrating agent to carbonize carbohydrate-containing substances such as wood, paper, cotton and linen fabrics, and biological flesh. When mixed with water, it will release a lot of heat energy. It is highly corrosive and oxidizing and should be used with caution. It is an important industrial raw material, which can be used to manufacture fertilizers, medicines, explosives, pigments, detergents, batteries, etc., and is also widely used in industries such as purification of petroleum, me...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/76
Inventor 叶良俊余双强吕景祥祝翠华李小洪查炎华胡玉峰
Owner HUBEI XIANGYUN GROUP CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com