Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synthetic method of diluent for cleaning oil sludge at bottom of crude oil storage tank

A crude oil storage tank and a synthesis method technology are applied in the treatment of hydrocarbon oil, the petroleum industry, the preparation of liquid hydrocarbon mixtures, etc., which can solve the problems of large addition amount and high cost of diluents, achieve low production costs, reduce personnel injuries, and eliminate the need for Effects of personal injury

Pending Publication Date: 2020-12-04
孙海滨 +2
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent realizes the online cleaning of oil sludge at the bottom of crude oil storage tanks, but the cost of diluent used is relatively high and the amount added is relatively large

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. The waste palmitic acid oil is filtered through a centrifuge to remove mechanical impurities, and the water is removed by a disc centrifuge. The acid value is 82mgKOH / g, and the total fatty acid content is 75wt%. Get 6 tons of waste palmitic acid oil after processing and join in the reactor;

[0026] 2. Add 67.2kg of p-toluenesulfonic acid, 696L of toluene, and 322.8kg of glycerin into the reactor, heat up to 125°C, and keep the toluene reflux until there is no water phase in the water separator, and the reaction ends. The mixture is distilled to recover toluene.

[0027] 3. Transesterification reaction: After the mixture in step 2 drops to room temperature, add 190.8kg isopropanol to the system, heat up to 80°C for reflux reaction, and take a sample to test its viscosity after 4 hours of reaction. When the viscosity is less than 30 centipoise The reaction is over. The material was washed three times with deionized water, the organic phases were combined, and the a...

Embodiment 2

[0029] 1. Filter the waste palmitic acid oil through a centrifuge to remove mechanical impurities, and use a disc centrifuge to remove water. The acid value is 56 mgKOH / g, and the total fatty acid content is 80 wt%. Get 6 tons of waste palmitic acid oil after processing and join in the reactor;

[0030] 2. Add 48kg of p-toluenesulfonic acid, 1026L of toluene, and 193.2kg of glycerin into the reactor, heat up to 118°C and reflux until there is no water phase in the water separator, and the reaction ends. The mixture is distilled to recover toluene.

[0031] 3. Transesterification reaction: After the mixture in step 2 drops to 50°C, add 493.2kg of sec-butanol to the system, and heat up to 90°C for reflux reaction. After the reaction is carried out for 4 hours, take a sample to test its viscosity. When the viscosity is less than 30 centipoise This is the end of the reaction. The material was washed three times with deionized water, the organic phases were combined, and the aque...

Embodiment 3

[0033] 1. Filter the waste oil through a centrifuge to remove mechanical impurities, and use a butterfly centrifuge to remove water. The acid value is 102mgKOH / g, and the total fatty acid content is 85%. Take 5 tons of the treated waste oil and add it to the reactor ;

[0034] 2. Add 106kg of strong acid resin catalyst into the reactor, add 1054L of toluene and 377kg of glycerin, heat up to 120°C and reflux until there is no water phase in the water separator, and the reaction ends. The mixture is distilled to recover toluene.

[0035] 3. Transesterification reaction: After the mixture in step 2 drops to room temperature, add 360kg of isopropanol to the system, heat up to 75°C for reflux reaction, and take a sample to test its viscosity after the reaction is carried out for 4 hours. When the viscosity is less than 30 centipoise This is the end of the reaction. The material was washed three times with deionized water, the organic phases were combined, and the aqueous phase wa...

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
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses a synthesis method of a diluent for cleaning oil sludge at the bottom of a crude oil storage tank, which comprises the following steps: by using waste oil as a raw material, filtering by a centrifuge to remove mechanical impurities, removing water, adding glycerol, and refluxing toluene under the action of a catalyst until no water phase is generated in a water segregator;adding fatty alcohol, refluxing to react for a certain time, and stopping the reaction when the viscosity is reduced to be less than 30 centipoises; washing with water, combining organic phases, and separating to remove a water phase to obtain an oil phase, namely the diluent. The diluent provided by the invention has strong oil solubility, and can dilute oil sludge without flowing state at the bottom of a crude oil storage tank, so that the oil sludge is changed into a pumpable state, and the mechanical cleaning of the oil sludge at the bottom of the crude oil storage tank is realized. The diluent has the advantages that the diluent is simple in structure, labor consumption and environmental pollution are reduced to a certain extent, the diluent is low in oxygen content, and refining andother further treatment and utilization processes of recycled crude oil are unaffected.

Description

technical field [0001] The invention belongs to the technical field of oil sludge cleaning at the bottom of crude oil storage tanks, and in particular relates to a synthesis method of a diluent for cleaning oil sludge at the bottom of crude oil storage tanks. Background technique [0002] When the oil storage tank is storing crude oil, the mechanical impurities, soil, paraffin and other heavy components in the crude oil will form viscous sludge with high viscosity at the bottom of the oil storage tank due to long-term natural settlement. After storage for a certain period of time, when the amount of sludge reaches a certain amount, in order to ensure the safety and normal operation of crude oil refining, it is necessary to clean the sludge at the bottom of the crude oil storage tank. [0003] At present, our country adopts the method of mechanical cleaning and manual cleaning of the bottom of the tank, and the cleaned sludge is treated as a hazardous waste for direct treatme...

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 Applications(China)
IPC IPC(8): C10G1/04
CPCC10G1/045C10G2300/1003
Inventor 吴宗斌马同奎孙海滨
Owner 孙海滨
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com