CN209893997U

CN209893997U - Hydrocracking waste heat recovery device

Info

Publication number: CN209893997U
Application number: CN201920225607.8U
Authority: CN
Inventors: 肖峰; 康仲伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-23
Filing date: 2019-02-23
Publication date: 2020-01-03
Anticipated expiration: 2029-02-23

Abstract

The utility model relates to a hydrocracking waste heat recovery device, which comprises a water tank, wherein a pressure pump is arranged at the top of the water tank, hot air inlet pipes and an air inlet pipe are respectively arranged at two ends of the pressure pump, the air inlet pipe is arranged at the bottom in the water tank, an air blower is arranged at the bottom of the water tank and is fixedly connected with a threaded pipe through a pipeline, the threaded pipe is fixedly connected with an air outlet pipe, a first observation window is fixedly connected with a through hole arranged on the water tank, a middle pipe is fixedly connected with the water tank and is fixedly connected with an adsorption box, and a second observation window is arranged on the side wall of the adsorption box, the utility model uses the pressure pump to pump the flue gas with the temperature of more than 300 ℃ and enters the water tank through the air inlet pipe to heat water, the clean air is pumped into the threaded pipe through the air blower, the hot water in the water tank preheats, the preheating time is shortened, and the production energy consumption is reduced.

Description

Hydrocracking waste heat recovery device

Technical Field

The utility model relates to a hydrocracking waste heat recovery technical field, concretely relates to hydrocracking waste heat recovery device.

Background

Hydrocracking is an improvement of catalytic cracking technology. The catalytic cracking is carried out under the hydrogen condition, so that the dehydrogenation condensation reaction generated during the catalytic cracking can be inhibited, and the generation of coke is avoided. The operating conditions are 6.5-13.5 MPa of pressure and 340-420 ℃, high-grade products without olefin can be obtained, and the liquid yield can reach more than 100% (because hydrogen is added into oil molecules). It is a process in petrochemical industry, i.e. at higher pressure and temperature in the petroleum refining process, the hydrogen gas makes the heavy oil produce hydrogenation, cracking and isomerization reactions under the action of catalyst, and then the heavy oil is converted into light oil (gasoline, kerosene, diesel oil or raw material for preparing olefin by catalytic cracking and cracking). It is different from catalytic cracking in that the catalytic cracking reaction is accompanied by a hydrogenation reaction of hydrocarbons. Hydrocracking is essentially the organic combination of hydrogenation and catalytic cracking processes, and can enable heavy oil products to generate light oil products such as gasoline, kerosene and diesel oil through catalytic cracking reaction.

Hydrocracking processes can be generally divided into one-stage and two-stage processes, with one-stage process including one-stage hydrocracking in series and one-stage hydrocracking. Among them, the one-stage serial hydrocracking process is more commonly used. Generally, the hydrocracking process comprises heating raw oil in a raw oil heating furnace, feeding into a hydrofining reactor for hydrofining, then the raw oil after hydrofining is sent into a hydrocracking reactor for hydrocracking reaction, the product after hydrocracking, the raw oil and hydrogen gas are subjected to heat exchange by a heat exchanger and are cooled by an air cooler and then sequentially enter a high-pressure separator and a low-pressure separator for separation, the separated hydrogen gas is mixed with new hydrogen by a recycle hydrogen compressor, then enters a recycle hydrogen heating furnace for heating and recycling after being subjected to heat exchange with the hydrocracking product, the mixture after the hydrogen gas is removed enters a fractionating tower for fractionating, cutting according to different requirements to obtain dry gas, liquefied gas, light and heavy naphtha, jet fuel and diesel oil, wherein part of residual oil is used as cycle oil to return to the tower for cycle use, and part of residual oil is used as tail oil discharge device.

In the existing hydrocracking process, a heat exchanger and an air cooler are generally arranged between a reactor and a high-pressure separator, wherein the air cooler is used for cooling a process fluid. However, in the existing process system, the air cooler releases the heat of the system into the air, so that the heat resource of the air cooler is not reasonably and effectively utilized, the energy consumption of the system is high, and the waste of the heat resource is caused.

Based on this, the utility model designs specifically be a hydrocracking waste heat recovery device to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes at least a defect among the prior art, provides a hydrocracking waste heat recovery device to solve the problem that proposes among the above-mentioned background art.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

according to one aspect of the utility model, a hydrocracking waste heat recovery device is provided, which comprises a water tank, a first observation window, an air blower, a second observation window, an adsorption tank, an exhaust pipe, a middle pipe, a water feeding pipe, a cap, an outlet pipe, a pressure pump, an inlet pipe, a drain pipe, a screwed pipe and a drain pipe, wherein the top of the water tank is fixedly provided with the pressure pump, two ends of the pressure pump are respectively and fixedly connected with a hot air inlet pipe and an inlet pipe, the outlet of the inlet pipe is arranged at the bottom of the water tank, the bottom of the water tank is provided with the air blower, the air blower is fixedly connected with the screwed pipe through a pipeline, the screwed pipe is fixedly connected with the outlet pipe, the top and the bottom of the water tank are respectively and fixedly connected with the water feeding pipe and the drain pipe, the cap is connected with the water feeding pipe, the middle pipe is fixedly connected with an adsorption box, a second observation window is formed in the side wall of the adsorption box, and the top and the bottom of the adsorption box are respectively and fixedly connected with an exhaust pipe and a liquid discharge pipe.

Preferably, the booster pump is connected with hot air of hydrocracking waste heat through a hot air inlet pipe.

Preferably, the threaded pipe is fixedly installed in the water tank.

Preferably, the bottom of the right end of the middle pipe is provided with the inner bottom of the adsorption tank.

Preferably, the water tank is filled with water, and the adsorption tank is filled with an organic solvent.

Preferably, the pressure pump and the blower are both electrically connected with an external power supply.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a force (forcing) pump is taken out the flue gas more than 300 ℃ of temperature, it heats water to get into the water tank through the intake pipe, take out clean air admission screwed pipe through the air-blower, hot water in the water tank preheats the air in the screwed pipe, carry out the comprehensive utilization with the hydrocracking waste heat, air after preheating is applied to the hydrocracking reaction, shorten preheating time, reduce the production energy consumption, harmful substance in the hydroenergy adsorbed air in addition, air admission adsorption box after the water filtration is interior, organic solvent in the adsorption box adsorbs the organic matter of air, can adsorb the flue gas, avoid the flue gas pollution environment. The utility model discloses a water tank and the particular case that adsorbs the case can in time be known to first observation window and second observation window.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a hydrocracking waste heat recovery device according to the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a sectional view of the structure of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. the water tank 2, the first observation window 3, the blower 4, the second observation window 5, the adsorption tank 6, the exhaust pipe 7, the middle pipe 8, the water feeding pipe 9, the cap 10, the air outlet pipe 11, the pressure pump 12, the air inlet pipe 13, the liquid discharge pipe 14, the threaded pipe 15 and the water discharge pipe.

Detailed Description

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-3, the utility model provides a hydrocracking waste heat recovery device, including water tank 1, first observation window 2, air-blower 3, second observation window 4, adsorption tank 5, blast pipe 6, intermediate pipe 7, water feeding pipe 8, block 9, outlet duct 10, force (forcing) pump 11, intake pipe 12, fluid-discharge tube 13, screwed pipe 14 and drain pipe 15, the top of water tank 1 is fixedly installed with force (forcing) pump 11, two ends of force (forcing) pump 11 are fixedly connected with hot air inlet pipe and intake pipe 12 respectively, the outlet of intake pipe 12 is installed at the bottom of water tank 1, convenient hot flue gas can be contacted with water completely, air-blower 3 is installed at the bottom of water tank 1, air-blower 3 is fixedly connected with screwed pipe 14 through the pipeline, screwed pipe 14 increases the contact area with water, screwed pipe 14 is fixedly connected with outlet duct 10, water feeding pipe 8 and drain pipe 15 are fixedly connected with the top and bottom of water tank, the water adding pipe 8 is connected with a cover cap 9 through a thread, the tightness of the water tank 1 is ensured, a first observation window 2 is fixedly connected with a through hole arranged on the water tank 1, the specific situation of the water tank 1 can be known in time through the first observation window 2, the water tank 1 is fixedly connected with an intermediate pipe, an adsorption tank 5 is fixedly connected with the intermediate pipe 7, smoke with the temperature of more than 300 ℃ is pumped through a pressure pump 11, the smoke enters the water tank 1 through an air inlet pipe 12 to heat water, clean air is pumped through an air blower 3 to enter a threaded pipe 14, hot water in the water tank 1 preheats air in the threaded pipe 14, hydrocracking waste heat is comprehensively utilized, the preheated air is applied to hydrocracking reaction, the preheating time is shortened, the production energy consumption is reduced, in addition, water can adsorb harmful substances in the air, the air after water is filtered enters the adsorption tank 5, organic solvents in the adsorption tank 5 adsorb organic substances in the air, can adsorb the processing to the flue gas, avoid the flue gas polluted environment, seted up second observation window 4 on the 5 lateral walls of adsorption tank, can in time know the particular case of adsorption tank 5 through second observation window 4, adsorption tank 5 top and bottom respectively fixedly connected with blast pipe 6 and fluid-discharge tube 13.

In the utility model, the pressure pump 11 is connected with the hydrocracking waste heat air through the hot air inlet pipe. The threaded pipe 14 is fixedly installed in the water tank 1. The bottom in the adsorption tank 5 is arranged at the bottom of the right end of the middle pipe 7, so that the air is ensured to be completely contacted with the organic solvent. The water tank 1 is filled with water, and the adsorption tank 5 is filled with an organic solvent. The pressure pump 11 and the blower 3 are both electrically connected with an external power supply, and the pressure pump 11 and the blower 3 adopt a YX-71D-2.2KW rotary blower.

One specific application of this embodiment is: adding water into the water tank 1 through a water inlet pipe 8, then covering a cover cap 9, and adding an organic solvent into the adsorption tank 5 through an exhaust pipe 6; the pressure pump 11 and the blower 3 are started by a switch, the pressure pump 11 pumps flue gas with the temperature of more than 300 ℃, the flue gas enters the water tank 1 through the air inlet pipe 12 to heat water, clean air is pumped by the blower 3 to enter the threaded pipe 14, hot water in the water tank 1 preheats air in the threaded pipe 14, hydrocracking waste heat is comprehensively utilized, the preheated air is applied to hydrocracking reaction (the initial air temperature in the hydrocracking reaction reaches 143 ℃), the preheating time is shortened, the production energy consumption is reduced, in addition, water can adsorb harmful substances in the air, the air after water filtration enters the adsorption tank 5 through the middle pipe 7, organic substances in the air are adsorbed by an organic solvent in the adsorption tank 5, so that the device can adsorb the flue gas and avoid the flue gas from polluting the environment; the specific conditions of the water tank 1 and the adsorption tank 5 can be known in time through the first observation window 2 and the second observation window 4.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth herein. The present invention is capable of other embodiments and of being practiced and carried out in a variety of ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.

Claims

1. A hydrocracking waste heat recovery device comprises a water tank, a first observation window, a blower, a second observation window, an adsorption tank, an exhaust pipe, a middle pipe, a water adding pipe, a cover cap, an air outlet pipe, a pressure pump, an air inlet pipe, a liquid discharge pipe, a threaded pipe and a water discharge pipe,

the utility model discloses a water tank, including water tank top, water tank, air-blower, screwed pipe fixedly connected with outlet duct, the water tank top fixedly mounted has the force (forcing) pump, the force (forcing) pump both ends difference fixedly connected with hot-air advances pipe and intake pipe, the bottom in the water tank is installed to the export of intake pipe, the air-blower is installed to the water tank bottom, the air-blower passes through pipeline fixedly connected with screwed pipe, screwed pipe fixedly connected with outlet duct, water tank top and bottom difference fixedly connected with filler pipe and drain pipe, threaded connection has the block on the filler pipe, the first observation window of through-hole fixedly connected with of department that the water tank was seted up, water tank fixedly connected with intermediate tube, intermediate tube fixedly connected with adsorbs the case, the second.

2. The hydrocracking waste heat recovery device of claim 1, wherein the booster pump is connected with the hydrocracking waste heat air through a hot air inlet pipe.

3. The hydrocracking waste heat recovery device of claim 1, wherein the threaded pipe is fixedly installed in the water tank.

4. The hydrocracking waste heat recovery device of claim 1, wherein the bottom of the right end of the middle pipe is provided with an inner bottom of an adsorption tank.

5. The hydrocracking waste heat recovery device of claim 1, wherein the water tank contains water, and the adsorption tank contains an organic solvent.

6. The hydrocracking waste heat recovery device of claim 1, wherein the pressure pump and the blower are both electrically connected to an external power source.