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Oil soluble sulfide scavengers with low salt corrosion and methods of making and using these scavengers

A technology for sulfides and reaction products, applied in chemical instruments and methods, separation methods, organic chemistry, etc., can solve problems such as limited application, and achieve the effect of reducing safety and handling problems, reducing salt corrosion risk, and low risk

Inactive Publication Date: 2019-07-23
BL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Monoethanolamine (MEA) triazine is a widely used H 2 S scavengers; however, high amine salt corrosion potential is a major concern for refinery operations
Since it is a water-based product, MEA triazine has mass transfer limitations which limit its application in high viscosity streams

Method used

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  • Oil soluble sulfide scavengers with low salt corrosion and methods of making and using these scavengers
  • Oil soluble sulfide scavengers with low salt corrosion and methods of making and using these scavengers
  • Oil soluble sulfide scavengers with low salt corrosion and methods of making and using these scavengers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Formaldehyde: DEHA adduct (2:1 molar ratio), pure.

[0034] 45g of solid paraformaldehyde was placed in the flask. Anhydrous DEHA (65 g) was added. The mixture was stirred and heated to 90° C. for 1 hour until the paraformaldehyde was completely dissolved. Cool to room temperature and collect 110 g of adduct (100%).

Embodiment 2

[0036] Formaldehyde: DEHA adduct (2:1 molar ratio), in solvent.

[0037] 65g of solid paraformaldehyde was placed in the flask. Anhydrous DEHA (89 g) and 51 g Aromatic A-150 solvent were added. The mixture was stirred and heated to 90°C for 1 hour until the paraformaldehyde was completely dissolved. Aromatic A-150 is a heavy aromatic solvent naphtha. Cool to room temperature and collect 205 g of adduct (100%).

Embodiment 3

[0039] Formaldehyde: DEHA adduct (molar ratio 1:1), pure.

[0040] 23 g of solid paraformaldehyde were placed in the flask. Anhydrous DEHA (65 g) was added. The mixture was stirred and heated to 90°C for 1 hour until the paraformaldehyde was completely dissolved. Cool to room temperature and collect 88 g of adduct (100%).

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Abstract

The invention relates to sulfide scavengers useful to reduce sulfide concentration in fluid streams and methods of using these scavengers. The scavengers comprise oil soluble reaction products of formaldehyde / N-substituted hydroxylamines and can be used to reduce, for example, H2S content in viscous hydrocarbon oil streams.

Description

[0001] field of invention [0002] The present invention relates to oil-soluble N-substituted hydroxylamine / formaldehyde reaction products (sometimes referred to hereinafter as AHAF), methods of making them and methods of using them to reduce sulfide levels in fluid (ie, gas or liquid) streams. [0003] Background of the invention [0004] Hydrogen sulfide is H 2 S, is a clear, toxic gas with a foul smell. It is also highly flammable. The Environmental Protection Agency and other regulatory agencies around the world tightly control H 2 Release of S into the environment. h 2 S can be present in well water, wastewater and other aqueous systems. h 2 S is often present in crude oil and natural gas reserves and must be reduced before such reserves can be used commercially. H in these stocks before treatment 2 S concentrations generally vary with location, and H in natural gas 2 S concentrations are usually higher than H in crude oil reserves 2 S concentration. For example...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C239/10B01D53/14
CPCB01D53/1493B01D53/48C02F5/12C07C239/10C10L3/103B01D2251/80B01D2252/502B01D2256/24B01D2256/245B01D2257/304B01D2257/306B01D2257/308C10L2290/545C10G21/27C10G29/20C02F2101/101C02F2101/40B01D53/1468B01D53/52B01D53/78B01D2252/20405B01D2252/20431B01D2252/20484C07C239/12C10G2300/207
Inventor H.G.巴加里亚G.卡普兰
Owner BL TECH INC