Method for processing waste water/gas from tungsten smelting and a device thereof

A technology for waste gas treatment and waste water, which is applied in the field of metallurgy, can solve problems such as heating, high energy consumption, and large water consumption, and achieve the effects of simple process steps, low processing costs, and water conservation

Inactive Publication Date: 2009-09-16
FUJIAN JINXIN TUNGSTEN
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a stripping tower requires heating and coal consumption; using a water film dedusting tower to remove SO in boiler flue gas 2 and dust, consume a lot of water
Therefore, there are high environmental protection treatment costs, high energy consumption, and SO in the flue gas to meet the emission standards. 2 The treatment effect is not good, which restricts the development of environmental protection treatment technology to a certain extent
At present, there is no technology at home and abroad that can simultaneously desulfurize, dust and remove ammonia. Therefore, it is particularly urgent and important to seek an environmentally friendly treatment method and equipment that combines the comprehensive utilization of APT production wastewater and boiler flue gas.

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
  • Method for processing waste water/gas from tungsten smelting and a device thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] First discharge the alkaline wastewater with a PH value of 12-13 and an ammonia content of 385g / l into the alkaline wastewater pool of the APT production line of the ion exchange process, and then use a pump to add the wastewater from the upper part of the dedusting, desulfurization and deammonization tower, and control the flow of wastewater at 13-15m 3 / H. The boiler flue gas is extracted from the boiler through the induced draft fan. After the flue gas passes through the multi-tube cyclone dust collector to remove the coarse dust, it is sent from the lower part of the dust removal, desulfurization and deamination tower. The flue gas temperature is 160-200 ° C, and the air volume is controlled at 13000 -15000m 3 / H, in the dust removal, desulfurization and deamination tower, the flue gas diffuses from the bottom to the top, and the waste water is sprayed from the top to the bottom. The lower part of the desulfurization and deamination tower is discharged into the se...

Embodiment 2

[0037] The process steps and devices are the same as in Example 1, except that the four parameters of alkaline wastewater ammonia content and flow rate, flue gas temperature and air volume are different, that is, the pH value of alkaline wastewater is 12-13, the ammonia content is 395g / l, the flow rate of alkaline wastewater Controlled at 15-16m 3 / H; flue gas temperature is controlled at 140-160°C, air volume is controlled at 15000-18000m 3 / H. After testing: the discharged water ammonia content is 11mg / l, the discharged gas SO 2 Content 400mg / m 3 , smoke content: 90mg / m 3 , to meet the requirements of the national first-level emission standards.

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 relates to a method for processing waste water / gas from tungsten smelting and a device thereof. The method is to directly implement the processing of the waste water / gas by utilizing alkali waste water, which is generated by extracting ammonium tungstate from tungsten ores by an ion exchange method, and by utilizing smoke gas generated by a boiler furnace, and the method comprises the following steps of: cyclone dust removal, spray dust removal, desulfurization, deamination, controlling the temperature of the primarily dust-removed smoke gas of the boiler furnace in a range from 140-200 DEG C, diffusing from bottom to top the air quantity of 13000-18000 m<3> / H and controlling the flow quantity from top to bottom in a range from 13-15 m<3>H, spraying the alkali waste water for exchange absorption for removing fine particle dusts and SO2 in the smoke gas and free ammonia in the alkali waste water, exhausting net gas after the spraying absorption to the air and discharging purified water after deposition; the device for realizing the method for processing waste water / gas from tungsten smelting comprises; a water pump, a multitubular cyclone dust extractor, a dust-removing desulfurization deamination nitrogen column and a water processing pond. The invention has the advantages of simple technological steps, small investment of the device, easy operation, low processing cost and primary standard exhaust of the waste water / gas.

Description

1. Technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and a device for treating tungsten smelting wastewater and waste gas. 2. Background technology [0002] In recent years, with the country's emphasis on environmental protection and the strengthening of the implementation of national environmental protection laws and regulations, following the principles of clean production, pollutant discharge and total amount control, the level of three wastes treatment has been comprehensively improved, and energy saving, emission reduction, and clean production have been truly realized. . At present, most of the domestic APT (ammonium paratungstate English abbreviation) production processes are ion exchange processes. Because the wastewater produced by the APT ion exchange method has an ammonia content of 400mg / l and a pH value of 12-13, it belongs to high-concentration alkaline wastewater. Boiler smoke SO in air 2 Content up ...

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 Applications(China)
IPC IPC(8): B01D53/78B01D53/50C02F1/66C02F1/58
Inventor 蓝永祥林丽萍石世人汤松照
Owner FUJIAN JINXIN TUNGSTEN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap