CN214830198U

CN214830198U - Energy ecological recycling system for refining workshop

Info

Publication number: CN214830198U
Application number: CN202121121312.XU
Authority: CN
Inventors: 刘振泉
Original assignee: Kreb Oil Engineering Technology Guangzhou Co ltd
Current assignee: Kreb Oil Engineering Technology Guangzhou Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-11-23
Anticipated expiration: 2031-05-24

Abstract

The embodiment of the application discloses ecological cyclic utilization system of refining shop energy, including the VE that is used for improving VE content carry the volume portion, be used for carrying out concentrated purification's VE concentrated portion, be used for producing fatty acid methyl ester's FFA deep processing portion, retrieve workshop heat energy and replace the heat recovery portion that the natural gas burns and produce steam through biodiesel. The utility model provides an ecological cyclic utilization system of refinery workshop energy can carry out further processing in order to obtain the result that has economic benefits to the accessory product that the refinery workshop produced to carry out recycle to the energy in the workshop, reduce workshop manufacturing cost, improve the ecological cycle of the energy.

Description

Energy ecological recycling system for refining workshop

Technical Field

The application relates to the technical field of VE extraction equipment of oil products, in particular to a refinery workshop energy ecological recycling system.

Background

In the grease treatment process of a refining plant, various accessory products, such as waste grease, fatty acid mixture and the like, are generated, and more heat is wasted, and the production cost of the plant is increased due to the discarding of various accessory products and the waste of heat, so that a system capable of changing the accessory products into 'waste' and realizing energy recycling is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide an ecological cyclic utilization system of refinery workshop energy, the subsidiary result to the refinery workshop production carries out further processing in order to obtain the result that has economic benefits to carry out recycle to the energy in the workshop, reduce workshop manufacturing cost, improve the ecological cycle of the energy.

In order to achieve the purpose, the application provides an energy ecological recycling system for a refining workshop, which comprises a VE (vitamin E) increasing part for increasing VE content, a VE concentrating part for concentrating and purifying VE, an FFA deep processing part for producing fatty acid methyl ester, and a heat energy recycling part for recycling workshop heat energy and generating steam by burning biodiesel instead of natural gas; the VE extraction part comprises a heater, a VE collecting tower, a first heat exchanger group, a deodorization tower and a second heat exchanger group which are sequentially communicated, the VE concentration part comprises a VE concentration analyzer and a third heat exchanger group which are communicated with each other, the second heat exchanger group is communicated with the VE concentration analyzer, and refined distillate output by the second heat exchanger group is conveyed into the VE concentration analyzer to be subjected to vacuum high-temperature distillation to obtain a fatty acid mixture and fatty acid; the FFA deep processing part comprises a reaction kettle and a fourth heat exchanger group which are communicated with each other, the reaction kettle is communicated with the VE concentration analyzer and the deodorization tower respectively, and the fatty acid mixture and the fatty acid which are treated by the VE concentration analyzer and the waste grease generated by the deodorization tower are conveyed into the reaction kettle respectively to be subjected to catalytic reaction and reduced pressure rectification in sequence to obtain fatty acid methyl ester; the heat energy recovery part comprises a heat energy recovery device, a fifth heat exchanger group, a water tank and a steam energy-saving device which are sequentially communicated, and the heat energy recovery device is used for collecting the heat of the VE increasing part, the VE concentrating part and the FFA deep processing part, exchanging heat through the fifth heat exchanger group and then conveying the heat to the water tank to heat the water in the water tank; the steam energy-saving device is communicated with the VE capacity increasing part, the VE concentrating part and the FFA deep processing part to obtain generated biodiesel, and the temperature in the water tank is continuously increased by the biodiesel to generate steam, and then the steam is conveyed to the VE capacity increasing part, the VE concentrating part and the FFA deep processing part to supply heat.

Preferably, vacuum pumps are respectively arranged between the first heat exchanger group and the deodorization tower, between the deodorization tower and the second heat exchanger group, and between the VE concentration analyzer and the third heat exchanger group.

Has the advantages that:

according to the refining workshop energy ecological recycling system, the VE extraction part and the VE concentration part improve the VE content in the grease, and redundant VE is extracted to obtain a VE distilled mixture with high VE content and fatty acid under the condition of ensuring the quality of an oil product; through an FFA deep processing part, reacting deodorized distillate of a refining workshop and waste oil of the refining workshop to obtain fatty acid methyl ester with good economic benefit; the heat energy recovery part is used for producing steam for redundant heat in the refining workshop and using workshop waste gas grease as biodiesel, and the steam is circularly put into the refining workshop for supplying heat; the method realizes the effective utilization of auxiliary products of the refining workshop and the ecological recycling of energy, and reduces the production cost of the refining workshop.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block diagram of the energy ecological recycling system of a refinery plant in the embodiment of the present application;

FIG. 2 is a work flow diagram of the energy ecological recycling system of the refinery plant in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1, the refinery plant energy ecological recycling system comprises a VE extraction part for increasing VE content, a VE concentration part for concentrating and purifying VE, an FFA deep processing part for producing fatty acid methyl ester, and a heat recovery part for recovering plant heat and generating steam by burning biodiesel instead of natural gas. The VE extraction part, the VE concentration part, the FFA deep processing part and the heat energy recovery part are all workshop structures in the prior art.

The VE lifting part comprises a heater, a VE collecting tower, a first heat exchanger group, a deodorizing tower and a second heat exchanger group which are sequentially communicated, the heater, the VE collecting tower, the first heat exchanger group, the deodorizing tower and the second heat exchanger group can be any one in the prior art, and vacuum pumps are respectively arranged between the first heat exchanger group and the deodorizing tower and between the deodorizing tower and the second heat exchanger group. And the VE content of the oil to be deodorized is improved in the VE extraction part by adding acid and alkali in a neutralization section and adjusting clay in a decoloration section. The oil is subjected to rapid high-temperature distillation in the VE collecting tower, the VE content is improved in the deodorization tower, the oil temperature is reduced to 235 degrees by the second heat exchanger group, then the oil is decolorized in the plate tower, the flavor and the quality of the oil are ensured, a large amount of VE in the oil is extracted under the condition of ensuring the quality of the finished oil, and the high-temperature rapid distillation is performed in the VE collecting tower, so that the increase of trans-fatty acid is avoided.

The VE concentration part comprises a VE concentration analyzer and a third heat exchanger set which are communicated with each other, the VE concentration analyzer and the third heat exchanger set can be any one of the prior art, and a vacuum pump is arranged between the VE concentration analyzer and the third heat exchanger set. And the second heat exchanger group is communicated with the VE concentration analyzer, and refined distillate output by the second heat exchanger group is conveyed into the VE concentration analyzer for vacuum high-temperature distillation to obtain a fatty acid mixture with higher VE content and fatty acid.

FFA deep-processing portion includes reation kettle, fourth heat exchanger group that communicates each other, and reation kettle, fourth heat exchanger group can be any one among the prior art, and in this embodiment, reation kettle is the reation kettle of carbon steel material. And the reaction kettle is respectively communicated with the VE concentration analyzer and the deodorization tower, and the fatty acid mixture and the fatty acid which are treated by the VE concentration analyzer and the waste grease generated by the deodorization tower are respectively conveyed into the reaction kettle to be sequentially subjected to catalytic reaction and reduced pressure rectification to obtain fatty acid methyl ester. Pumping a fatty acid mixture, fatty acid and waste oil (such as saponin acidified oil, and also can be waste oil in a canteen and the like) into a reaction kettle according to a certain mass, adding a certain proportion of catalyst, reacting the materials under the action of the catalyst to obtain qualified crude ester when the reaction temperature condition is reached, and carrying out reduced pressure rectification to obtain fatty acid methyl ester. The catalyst may include, but is not limited to, methanol, sulfuric acid, alkali, and the like. The following raw material oils are exemplified by the sulfated saponin oil and the pure fatty acid:

the raw material is set to be about 5 tons of processing amount per day, the price of each ton of raw material is 4500 yuan, namely the raw material cost: 5 tons 4500 yuan/ton 22500 yuan/day; the processing cost is calculated by raw materials such as catalyst, electricity, natural gas and the like, and the cost is about 800 yuan per ton of raw materials according to the market price, namely the processing cost per day: 5 tons of 800 yuan/ton to 4000 yuan/day; according to the yield of the finished product of 96 percent, namely the price of the finished product every day is as follows: 5 tons, 96%. 7100 yuan/ton, 34080 yuan/day; profit: 34080-: 7580 yuan/day 300 days 227.4 ten thousand, payback period: 225 ten thousand/227.4 ten thousand by 12 months-12 months. Therefore, the FFA deep processing part can convert the subsidiary products into products with good economic benefits, and is beneficial to reducing the processing cost of a refining workshop.

The heat energy recovery part comprises a heat energy recovery device, a fifth heat exchanger group, a water tank and a steam energy-saving device which are sequentially communicated, and the heat energy recovery device, the fifth heat exchanger group, the water tank and the steam energy-saving device can be any one of the heat energy recovery device, the fifth heat exchanger group, the water tank and the steam energy-saving device in the prior art. The heat energy recovery device is used for collecting heat of the VE volume increasing part, the VE concentration part and the FFA deep processing part, and after heat exchange of the fifth heat exchanger group, the heat energy recovery device is conveyed to the water tank to heat water in the water tank, namely, all the heat energy which can be recovered in a refining workshop is collected to heat soft water in the water tank, and the soft water temperature reaches 90-100 ℃ through heat exchange. The steam energy-saving device is communicated with the VE capacity improving part, the VE concentrating part and the FFA deep processing part to obtain the produced biodiesel, the temperature of the water in the water tank is continuously raised through the biodiesel, the steam energy-saving device continuously heats water at 100 ℃, the water is enabled to produce 8bar steam, and the steam energy-saving device is merged into a main steam packet of a workshop and then is conveyed to the VE capacity improving part, the VE concentrating part and the FFA deep processing part to supply heat for a refining workshop.

In the actual production process, the unit steam consumption of a refining workshop is generally 30-50kg/T crude oil, and the steam pressure generated by the heat energy recovery part is 8bar, and the capacity is 2 tons/hour: the outsourcing steam amount can be saved each year: 30 kg/ton crude oil 1000 ton/day 300 day/1000 9000 tons, can save the expense each year: 170 yuan/ton steam 9000 ton 153 ten thousand yuan, recovery period: 204 ten thousand/153 ten thousand 12 months-16 months.

The refinery workshop energy ecological recycling system based on the embodiment can further process the auxiliary products generated in the refinery workshop to obtain products with economic benefits, and can recycle the energy in the workshop, thereby reducing the production cost of the workshop and improving the ecological cycle of the energy.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. A refining workshop energy ecological recycling system is characterized by comprising a VE (vitamin E) increasing part for increasing VE content, a VE concentrating part for concentrating and purifying VE, an FFA deep processing part for producing fatty acid methyl ester, and a heat energy recovery part for recovering workshop heat energy and generating steam by burning biodiesel instead of natural gas; the VE extraction part comprises a heater, a VE collecting tower, a first heat exchanger group, a deodorization tower and a second heat exchanger group which are sequentially communicated, the VE concentration part comprises a VE concentration analyzer and a third heat exchanger group which are communicated with each other, the second heat exchanger group is communicated with the VE concentration analyzer, and refined distillate output by the second heat exchanger group is conveyed into the VE concentration analyzer to be subjected to vacuum high-temperature distillation to obtain a fatty acid mixture and fatty acid; the FFA deep processing part comprises a reaction kettle and a fourth heat exchanger group which are communicated with each other, the reaction kettle is communicated with the VE concentration analyzer and the deodorization tower respectively, and the fatty acid mixture and the fatty acid which are treated by the VE concentration analyzer and the waste grease generated by the deodorization tower are conveyed into the reaction kettle respectively to be subjected to catalytic reaction and reduced pressure rectification in sequence to obtain fatty acid methyl ester; the heat energy recovery part comprises a heat energy recovery device, a fifth heat exchanger group, a water tank and a steam energy-saving device which are sequentially communicated, and the heat energy recovery device is used for collecting the heat of the VE increasing part, the VE concentrating part and the FFA deep processing part, exchanging heat through the fifth heat exchanger group and then conveying the heat to the water tank to heat the water in the water tank; the steam energy-saving device is communicated with the VE capacity increasing part, the VE concentrating part and the FFA deep processing part to obtain generated biodiesel, and the temperature in the water tank is continuously increased by the biodiesel to generate steam, and then the steam is conveyed to the VE capacity increasing part, the VE concentrating part and the FFA deep processing part to supply heat.

2. The refinery plant energy ecological recycling system of claim 1, wherein vacuum pumps are respectively arranged between the first heat exchanger group and the deodorization tower, between the deodorization tower and the second heat exchanger group, and between the VE concentration resolver and the third heat exchanger group.