Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for regenerating desulfurizer

A desulfurizer, weak alkaline technology, applied in separation methods, ion exchange regeneration, chemical instruments and methods, etc., can solve problems such as insufficient removal and difficulty in removing suspended solids.

Inactive Publication Date: 2012-06-20
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Although the method disclosed in this patent application can remove sulfate ions and part of the suspended solids in the organic amine absorbent, however, the suspended solids of smaller particles in the organic amine absorbent such as suspended solids with a particle diameter of less than 1 micron It still cannot be fully removed, and, in the case of more suspended matter in the organic amine absorbent, it is more difficult to fully remove the suspended substance in the organic amine absorbent by the method disclosed in the above-mentioned patent application

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 regenerating desulfurizer
  • Method for regenerating desulfurizer
  • Method for regenerating desulfurizer

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0050] (1) Preparation of desulfurizer

[0051] Add 80 grams of N-hydroxyethylpiperazine, 30 grams of N, N-diethylpiperazine, 40 grams of diazabicyclo, and 50 grams of piperazine to 400 ml of water, and adjust the solution with 1mol / L phosphoric acid solution pH, stir evenly, then set the volume to 1000ml, control the pH=6.5 of the solution, thereby obtain the desulfurizing agent.

[0052] (2) Preparation of simulated desulfurization agent

[0053] Add sodium oxalate, sodium sulfate and sodium chloride to the desulfurizing agent prepared in (1), then, feed gas containing 1.2g / L dust therein so that the desulfurizing agent contains 3% by weight of suspended material, thereby preparing a simulated degraded desulfurizer. Mercury nitrate titration is used to measure the concentration of chloride ions in the simulated degraded desulfurizer, ion chromatography is used to measure the concentration of oxalate ions in the simulated desulfurized desulfurizer, and the gravimetric metho...

Embodiment 1

[0057] This example is used to illustrate the method for regenerating the desulfurizer provided by the present invention.

[0058] use as figure 2 The desulfurizing agent regeneration equipment shown regenerates the degraded desulfurizing agent prepared in Preparation Example 1. The specific method is as follows: at room temperature, make the degraded desulfurizer pass through the sedimentation filter 1 (produced by Shanghai Tongguang Science and Education Instrument Co., Ltd., model: φ 350mm × 500mm, which can pass through the sedimentation filter at a flow rate of 100 ml / min. The maximum particle diameter of the particles of the filter is 100 μm), quartz sand filter 5 (produced by Shanghai Tongguang Science and Education Instrument Co., Ltd., model: φ80mm×1500mm, the maximum particle diameter of the particles that can pass through the quartz sand filter is 50 μm) , activated carbon adsorption column 2 (produced by Shanghai Tongguang Science and Education Instrument Co., Lt...

Embodiment 2

[0060] This example is used to illustrate the method for regenerating the desulfurizer provided by the present invention.

[0061] use as figure 2 The desulfurizing agent regeneration equipment shown regenerates the degraded desulfurizing agent prepared in Preparation Example 1. The specific method is as follows: at room temperature, make the degraded desulfurizer pass through the sedimentation filter 1 (produced by Shanghai Tongguang Science and Education Instrument Co., Ltd., model: φ 350mm × 500mm, which can pass through the sedimentation filter at a flow rate of 100 ml / min. The maximum particle diameter of the particles of the filter is 100 μm), quartz sand filter 5 (produced by Shanghai Tongguang Science and Education Instrument Co., Ltd., model: φ80mm × 1500mm, the maximum particle diameter of the particles that can pass through the quartz sand filter is 20 μm) , activated carbon adsorption column 2 (produced by Shanghai Tongguang Science and Education Instrument Co., ...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for regenerating a desulfurizer, which comprises the steps of sequentially carrying out filtration, absorption by activated carbon, filtration by a membrane and ion exchange on the desulfurizer to be regenerated, wherein the ion exchange is realized by leading the desulfurizer to be generated after the filtration by the membrane to be in contact with anion exchange resin of a weak alkaline epoxy system, removing heat stable salts in the desulfurizer through the ion exchange, leading the desulfurizer to be regenerated to be in contact with mixed gas containingsulfur dioxide, and then obtaining the desulfurizer. The adoption of the method of regenerating the desulfurizer can not only remove suspended solids in the desulfurizer, but also fully remove the heat stable salts in the desulfurizer and further regenerate the desulfurizer.

Description

technical field [0001] The invention relates to a method for regenerating a desulfurizer. Background technique [0002] Aqueous solutions of basic compounds such as organic amine solutions are widely used in the removal and recovery of acid gases (hydrogen sulfide, carbon dioxide, sulfur dioxide, etc.). The principle is that after contacting low-concentration acid gas with lye, decomposed organic amine salts are formed to form rich liquid, and then heated and desorbed in the desorption tower to release high-concentration acid gas for recycling, and at the same time, the desorbed product is obtained The amine solution can be reused after purification. [0003] The oxygen content in the sintering flue gas is very high, and the organic amine desulfurization solution has three degradation methods in the process of desulfurizing the sintering flue gas, such as oxidative degradation of the organic amine solution, thermal degradation of the organic amine solution, and chemical deg...

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): B01D53/14B01D36/02B01D15/08B01D47/00
Inventor 邱正秋黎建明张金阳彭良虎王建山段蓉斌叶运高
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES