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Crude oil loading decalcification agent, crude oil decalcification device and application method thereof

A decalcifying agent and crude oil technology, which is applied in the field of crude oil decalcifying device and crude oil loading decalcifying agent, can solve the problems of incomplete separation of water and crude oil, increased difficulty of crude oil treatment, large sewage discharge, etc., and achieve good removal effect , reduce the cost of crude oil decalcification, and reduce the effect of sewage discharge

Active Publication Date: 2017-09-29
SHENZHEN GCD PETROLEUM ADDITIVE CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This decalcification method usually only adopts batch process, which has heavy workload, low decalcification efficiency, high production cost, large sewage discharge, serious environmental pollution, and incomplete separation of water and crude oil, which affects the quality of crude oil and affects crude oil. Subsequent processing increases the difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 19.2 kg of citric acid, 60 kg of silica gel, 0.9 kg of ZnCl in the reaction kettle 2 and 80 kilograms of dioxane, warming up to 90°C, stirring and reacting for 3 hours, then cooling, filtering and washing with water to obtain a loaded citric acid decalcifying agent; then the loaded decalcifying agent is filled in a fixed bed, and the temperature of the fixed bed is set to At 50°C, the crude oil containing 65.0ppm calcium and 8.8ppm magnesium was heated for 13h -1 The space velocity flows through the fixed bed, and the calcium content of the treated crude oil is measured to be 9.1ppm and the magnesium content to be 5.1ppm.

Embodiment 2

[0026] Add 11.8 kilograms of succinic acid, 67 kilograms of modified molecular sieves, 1.5 kilograms of ZnSO in the reaction kettle 4 and 75 kg of toluene, heated up to 100°C, stirred and reacted for 2 hours, then cooled, filtered and washed with water to obtain a loaded succinic acid decalcifying agent; then the loaded decalcifying agent was filled in a fixed bed, and the temperature of the fixed bed was set at 55°C. The crude oil containing 70.0ppm calcium and 8.9ppm magnesium was treated for 10h -1 The space velocity flows through the fixed bed, and it is measured that the calcium content of the treated crude oil is 6.5ppm, and the magnesium content is 4.5ppm.

Embodiment 3

[0028] Add 9.0 kg of oxalic acid, 45 kg of modified activated carbon, 1.0 kg of SnCl 2 and 70 kg of xylene, heated to 105°C, stirred and reacted for 2 hours, then cooled, filtered and washed with water to obtain a loaded oxalic acid decalcifying agent; then filled the loaded decalcifying agent into a fixed bed, and set the temperature of the fixed bed to 60°C. The crude oil containing 75.0ppm calcium and 9.2ppm magnesium was treated for 9h -1 The space velocity of the crude oil flows through the fixed bed, and the calcium content of the treated crude oil is measured to be 8.2ppm and the magnesium content to be 5.2ppm.

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PUM

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Abstract

The invention discloses a crude oil loading decalcification agent, a crude oil decalcification device and an application method thereof. The crude oil loading decalcification agent is loaded on a carrier by organic polycarboxylic acid through esterification reaction; the loading decalcification agent is fed into a fixed bed; when crude oil flows through the fixed bed, metal ions including calcium, magnesium and the like in the crude oil are chelated with the loading decalcification agent to form a complex, so as to realize a crude oil decalcification aim; the loading decalcification agent disclosed by invention can be recycled; only if the used loading decalcification agent is taken out and put into a hydrochloric acid solution, the calcium and magnesium ions can be replaced. The crude oil decalcification device provided by the invention is simple in structure and convenient to operate and can be used for continuously decalcifying; the decalcification agent is environmentally friendly and efficient, is not corrosive and can be recycled so that the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of crude oil pretreatment in the technical field of oil refining, and more specifically, relates to a crude oil loaded decalcifying agent, a crude oil decalcifying device and a use method thereof. Background technique [0002] In recent years, with the increasing demand for petroleum products and the deepening of crude oil exploitation, the heavy and inferior quality of crude oil has become more and more serious. The content of metals in crude oil, especially some alkaline earth metals such as calcium and magnesium, has greatly increased. The existence of these metal compounds, especially calcium salts, has serious hazards to crude oil processing, for example: 1) in crude oil catalytic cracking and hydrogenation reactions , Calcium will deposit on the surface of the catalyst, poisoning the active center of the catalyst, resulting in reduced catalyst activity, poor selectivity, and reduced light oil yield; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/12
Inventor 胡涛英严斌熊靓
Owner SHENZHEN GCD PETROLEUM ADDITIVE CO
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