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Preparation method of liquid desulfurizing agent and liquid desulfurizing agent

A desulfurizing agent and liquid technology, applied in the field of desulfurization of oil and gas wells, can solve problems such as affecting on-site construction progress, sedimentation and plugging, and achieve the effects of enhancing desulfurization temperature adaptability, improving desulfurization rate, and good emulsification.

Pending Publication Date: 2021-12-24
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when using hexahydro-s-triazine desulfurizer to remove H 2 When S, it is prone to serious sedimentation and pipe plugging, which seriously affects the progress of on-site construction. Due to space and cost constraints, it cannot be applied on an offshore platform on a large scale.

Method used

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  • Preparation method of liquid desulfurizing agent and liquid desulfurizing agent
  • Preparation method of liquid desulfurizing agent and liquid desulfurizing agent
  • Preparation method of liquid desulfurizing agent and liquid desulfurizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 100ml of ethanol as a solvent in the reactor;

[0034] Add 0.5mol 1,3,5-trihydroxyethylhexahydro-s-triazine, 1.0mol diethylenetriamine, 1.0mol epichlorohydrin and 1.5mol potassium hydroxide to the reactor;

[0035] Turn on electric stirring, raise the temperature to 110°C, and react for 4 hours to prepare a liquid desulfurizer. The synthesis circuit diagram is as follows figure 1 shown.

Embodiment 2

[0037] The difference from Example 1 is that 0.5 mol of 1,3,5-trihydroxyethylhexahydro-s-triazine, 1.5 mol of diethylenetriamine, 1.5 mol of epichlorohydrin and 1.5 mol of potassium hydroxide were added.

[0038] Turn on electric stirring, raise the temperature to 120°C, and react for 4 hours to prepare a liquid desulfurizer. The synthesis circuit diagram is as follows figure 1 shown.

Embodiment 3

[0040] The difference from Example 1 is that 0.5 mol of 1,3,5-trihydroxyethylhexahydro-s-triazine, 2.5 mol of diethylenetriamine, 2.5 mol of epichlorohydrin and 1.5 mol of potassium hydroxide were added.

[0041] Turn on electric stirring, raise the temperature to 130°C, and react for 4 hours to prepare a liquid desulfurizer. The synthesis circuit diagram is as follows figure 1 shown.

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Abstract

The invention provides a preparation method of a liquid desulfurizing agent and the liquid desulfurizing agent. The method comprises the following steps: adding ethanol as a solvent into a reaction kettle; then adding diethylenetriamine, epoxy chloropropane, 1, 3, 5-trihydroxyethyl hexahydro-s-triazine and a catalyst into the reaction kettle; stirring and heating the raw materials, controlling the raw materials to continuously react for a specified time at a specified reaction temperature, obtaining the liquid desulfurizing agent, the molar ratio of the catalyst to the 1, 3, 5-triethoxy hexahydro-s-triazine being 3: 1, and the molar ratio of the epoxy chloropropane to the diethylenetriamine to the 1, 3, 5-triethoxy hexahydro-s-triazine being 1: 1: (0.2-0.5). According to the technical scheme, the novel liquid desulfurizing agent is obtained, long-chain diethylenetriamino polyether substances generated after desulfurization of the liquid desulfurizing agent have good permeability and emulsifying performance, the dissolution rate of hydrogen sulfide and the mass transfer rate of hydrogen sulfide in a solution can be remarkably increased, desulfurization reaction is promoted, and environmental protection and reliability are realized.

Description

technical field [0001] The invention relates to the technical field of oil and gas well desulfurization, in particular to a preparation method of a liquid desulfurizer and the liquid desulfurizer. Background technique [0002] Hexahydro-s-triazine desulfurizer is an emerging liquid desulfurizer, which is easy to synthesize, low in cost, low in space occupancy, can be directly injected into offshore oil pipelines, and has good desulfurization effect. It occupies an irreplaceable position among many desulfurizers . [0003] However, when using hexahydro-s-triazine desulfurizer to remove H 2 When S is high, serious sedimentation and pipe plugging are prone to occur, which seriously affects the progress of on-site construction. Due to space and cost constraints, it cannot be applied on an offshore platform on a large scale. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. ...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G65/26B01D53/52B01D53/78C10L3/10
CPCC08G65/2624C08G65/263B01D53/52B01D53/78C10L3/103
Inventor 谢彦
Owner BINZHOU UNIV
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