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A kind of dry type TRT corrosion inhibitor desalination agent and preparation method thereof

A corrosion-inhibiting, dry-type technology, applied in the fields of corrosion-inhibiting and salt-removing agents, dry-type TRT corrosion-inhibiting and salt-removing agents and their preparations, which can solve problems such as short maintenance periods of devices, reduction of TRT power generation power, and damage to device dynamic balance. Achieve the effects of simple operation, prevention of deposition, and stable application performance

Active Publication Date: 2016-08-17
SHAANXI YUTENG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inhomogeneous fouling in various parts of the equipment, the dynamic balance of the device is destroyed, resulting in the reduction of TRT power generation, the vibration value of the main shaft continues to increase until it is automatically mediated, and the maintenance cycle of the device is short, and the worst case is 3-5 days.

Method used

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  • A kind of dry type TRT corrosion inhibitor desalination agent and preparation method thereof

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preparation example Construction

[0015] The preparation method of the dry TRT corrosion inhibitor and desalination agent is to add dioctadecyl dimethyl ether ammonium diiodide, organic mixture, dispersing auxiliary film-forming agent and methanol into the container, fully mix and stir evenly, and obtain dry Formula TRT corrosion inhibitor desalination agent.

[0016] Using the dry TRT corrosion inhibitor and desalination agent of the present invention, the dosing amount can be determined according to the scaling situation of the TRT device, generally the dosing amount is 80-100ppm, and it is added to the blast furnace gas pipeline before the entrance of the TRT device. The residual temperature of the coal gas is gasified, and the gasified agent and flue gas are evenly mixed into the turbine in the flow of the gas, so that the agent can effectively inhibit and disperse the fouling of the TRT device directly in the gaseous state. The dry TRT corrosion inhibiting and desalting agent of the present invention has ...

Embodiment 1

[0025] In this embodiment, the dry type TRT corrosion inhibitor and desalination agent is composed of 40% dioctadecyl dimethyl ether ammonium salt, 30% organic mixture, and 20% ethylenediamine tetramethylene phosphine by mass fraction. Sodium phosphate and 10% methanol; wherein, the organic mixture is a mixture of glycerol phosphate, methyl benzotriazepam and PESA in a mass ratio of 2:2:1.

[0026] The preparation method of the dry TRT corrosion inhibitor and desalination agent in this embodiment is: add diiodide octadecyl dimethyl ether ammonium salt, organic mixture, sodium ethylenediamine tetramethylene phosphonate and methanol into the container, Mix well and stir evenly to get the dry TRT corrosion inhibitor and desalinizer.

Embodiment 2

[0028] In this embodiment, the dry type TRT corrosion inhibitor and desalination agent is composed of 45% dioctadecyl dimethyl ether ammonium salt, 35% organic mixture, and 15% ethylenediamine tetramethylene phosphine by mass fraction. Sodium phosphate and 5% methanol; wherein, the organic mixture is a mixture of glycerol phosphate, methyl benzotriazepam and PESA in a mass ratio of 2:2:1.

[0029] The preparation method of the dry TRT corrosion inhibitor and desalination agent in this example is: add dioctadecyl dimethyl ether ammonium diiodide, organic mixture, sodium ethylenediamine tetramethylene phosphonate and methanol into the container, Mix well and stir evenly to get the dry TRT corrosion inhibitor and desalinizer.

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Abstract

The invention discloses a dry-type TRT corrosion-inhibition desalting agent and a preparation method thereof. The dry-type TRT corrosion-inhibition desalting agent is prepared by compounding the following components together by mass fraction: 40-50% of ammonium octadecyl dimethyl ethyl ether diiodide, 30-40% of organic mixture, 15-20% of disperse auxiliary film-forming agent and 5-10% of methanol. The ammonium octadecyl dimethyl ethyl ether diiodide, the organic mixture, the disperse auxiliary film-forming agent and the methanol are added to a container and mixed thoroughly and evenly to obtain the dry-type TRT corrosion-inhibition desalting agent. The dry-type TRT corrosion-inhibition desalting agent is applicable to the TRT of integrated iron and steel works; the dry-type TRT corrosion-inhibition desalting agent is injected into a gas pipeline continuously by use of a metering pump, and has an excellent scale inhibition effect on the scale of the TRT due to gas components after dry dust removal.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy and chemical industry, and relates to a corrosion inhibitor and desalination agent, in particular to a dry TRT corrosion inhibitor and desalination agent and a preparation method thereof. Background technique [0002] Blast furnace gas residual pressure power generation turbine equipment, referred to as TRT, is mainly used to recover the pressure energy and heat energy of the by-product (blast furnace gas) produced in the blast furnace smelting process, and can recover 30%-50% of the energy required by the blast furnace blower. %, the economic benefit is remarkable, and it is a very good energy-saving and environmental protection device for iron and steel enterprises. [0003] The medium of the TRT device is the dedusted gas from the top of the blast furnace. Although the dry dedusting is adopted, a certain amount of dust and saturated water vapor will remain in the gas phase med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/02
Inventor 陈力群
Owner SHAANXI YUTENG IND