CN112370801A

CN112370801A - Energy-saving safe explosion-proof reboiler

Info

Publication number: CN112370801A
Application number: CN202011288396.6A
Authority: CN
Inventors: 章巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-02-19

Abstract

The invention discloses an energy-saving safe anti-explosion reboiler which comprises a reboiler shell, wherein the bottom wall of the reboiler shell is fixedly connected with a feeding pipe in a penetrating manner, the top wall of the reboiler shell is fixedly connected with a discharging pipe, a balance pipe, an oil inlet pipe and an air outlet pipe in a penetrating manner, a heat exchange pipe is arranged in the reboiler shell, one end, far away from the reboiler shell, of the balance pipe is fixedly connected with an air storage chamber in a penetrating manner, the side wall of the air storage chamber is welded with the side wall of the oil inlet pipe, one end, far away from the reboiler shell, of the air outlet pipe extends into the air storage chamber in a penetrating manner, an air pressure sensing device is arranged in the balance pipe. Has the advantages that: the reboiler can allow small overpressure in the reboiler, can be self-regulated when the pressure is too high, cannot be directly closed, so that the production is not influenced, and can be directly closed when the pressure is too high, so that the explosion risk is avoided, meanwhile, the heat can be recycled, and the energy is saved.

Description

Energy-saving safe explosion-proof reboiler

Technical Field

The invention relates to the technical field of chemical production equipment, in particular to an energy-saving safe explosion-proof reboiler.

Background

The reboiler is similar to the condenser, but one is used for lowering the temperature, the reboiler is used for raising the temperature and vaporizing, the reboiler is often used with a rectifying tower in chemical production, the reboiler can vaporize heavy components at the bottom of the rectifying tower, gas phase flows upwards, and the gas phase and light component liquid phase from a reflux tank are subjected to partial vaporization and partial condensation for many times on a tower plate or a packing layer, so that the mixture is separated at high purity.

In the prior art, the existing reboiler has no good explosion-proof measure, and is usually only provided with a pressure sensor inside the reboiler, the reboiler is directly closed when the pressure is higher than a certain pressure, self-regulation and control cannot be performed, the use is convenient, and therefore, the energy-saving safe explosion-proof reboiler is provided.

Disclosure of Invention

The invention aims to solve the problem that a reboiler in the prior art has no good explosion-proof measure, and provides an energy-saving safe explosion-proof reboiler.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an energy-conserving safe explosion-proof reboiler, includes the reboiler shell, reboiler shell diapire runs through fixedly connected with inlet pipe, reboiler shell roof runs through fixedly connected with discharging pipe, balance tube, advances oil pipe, outlet duct, be provided with the heat exchange tube in the reboiler shell, the one end that the reboiler shell was kept away from to the balance tube runs through fixedly connected with gas receiver, and the gas receiver lateral wall of locating welds with advancing oil pipe lateral wall, the one end that the reboiler shell was kept away from to the outlet duct runs through inside extending to the gas receiver, be provided with air pressure induction system in the balance tube, be provided with regulation and control device in the gas receiver.

In the energy-saving safe explosion-proof reboiler, the air pressure sensing device comprises a sliding plug in the balance pipe, a plurality of first springs are fixedly connected between the sliding plug and the balance pipe, vent holes are formed in the sliding plug, and a blocking device is arranged in the side wall of the shell of the reboiler.

In foretell energy-conserving safe explosion-proof reboiler, the plugging device is including seting up the sliding tray in reboiler shell lateral wall, sliding tray sliding sleeve has the sprue, fixedly connected with fourth spring between sprue and the reboiler shell, sprue runs through sliding connection with the outlet duct lateral wall and extends to inside the outlet duct, the lateral wall that the sliding plug is close to outlet duct one side is inlayed and is had the permanent magnet.

In foretell energy-conserving safe explosion-proof reboiler, regulation and control device cup joints the sliding plate at the gas receiver inside wall including sealed slip, roof is inlayed and is had pressure sensor in the gas receiver, a plurality of second springs of fixedly connected with between pressure sensor and the sliding plate, function groove, two have all been seted up with advancing oil pipe lateral wall to the gas receiver side wall function groove communicates each other, the shrouding has been cup jointed to function inslot sealing interaction, the shrouding extends to in the oil pipe, a plurality of third springs of fixedly connected with between shrouding and the oil pipe inside wall.

In the above energy-saving safe explosion-proof reboiler, a pressure release valve is provided in the vent hole, a check valve is provided in the outlet duct, and the blocking block is made of ferromagnetic material.

In the above energy-saving safe explosion-proof reboiler, the length of the sealing plate should be smaller than the inner diameter of the oil inlet pipe.

Compared with the prior art, the invention has the advantages that:

1. when the overpressure degree in the reboiler is not large, the pressure is transmitted to the pressure release valve in the vent hole, so that the pressure release valve in the vent hole is opened, the gas flows into the gas storage chamber and then flows back into the reboiler through the gas outlet pipe, and the reboiler can allow small-amplitude overpressure;

2. when the overpressure degree in the reboiler continues to increase, the vent hole cannot timely discharge excessive gas into the gas storage chamber, so that the sliding plug slides upwards, the permanent magnet is not opposite to the blocking block along with the upwards sliding of the sliding plug, the magnetic attraction force is reduced, the blocking block slides out of the sliding groove under the elastic force of the fourth spring, the gas outlet pipe is blocked, when the sliding plug slides into the gas storage chamber, the gas enters the gas storage chamber, so that the sliding plate slides upwards, when the sliding plate slides over the functional groove, the sealing plate slides out of the functional groove through the air pressure, slides into the oil inlet pipe, semi-blocking is carried out on the oil inlet pipe, the oil inlet amount of the oil inlet pipe is reduced, the gasification speed in the reboiler is controlled, the internal pressure is controlled, self-regulation and control during overpressure are realized, the reboiler is not directly closed when the pressure is too high, and the production is not influenced;

3. if the pressure is continuously increased all the time after regulation and control, the sliding plate continuously slides upwards to directly and completely compress the second spring, the pressure is directly transmitted to the pressure sensor, and the sensor controls the reboiler to be closed after the pressure exceeds a certain value along with the continuous increase of the pressure, so that the explosion danger is avoided;

4. after the overpressure is regulated and controlled, the pressure in the reboiler returns to normal, the sliding plug is reset, the permanent magnet is opposite to the blocking block, the blocking block slides into the sliding groove through magnetic attraction, the air outlet pipe is opened, and at the moment, along with the resetting of the sliding plate, the gas in the gas storage chamber is discharged back into the reboiler through the air outlet pipe, so that the heat is recycled, and the energy-saving type gas storage device is more energy-saving.

Drawings

FIG. 1 is a schematic structural diagram of an energy-saving and safe explosion-proof reboiler provided by the present invention;

FIG. 2 is an enlarged view of the energy-saving and safe explosion-proof reboiler at A in accordance with the present invention;

FIG. 3 is an enlarged view of the energy-saving safety explosion-proof reboiler at B;

fig. 4 is a schematic structural diagram of the self-regulation and control of the energy-saving safe explosion-proof reboiler provided by the present invention.

In the figure: 1 reboiler shell, 2 inlet pipes, 3 outlet pipes, 4 heat exchange pipes, 5 oil inlet pipes, 6 balance pipes, 7 air outlet pipes, 8 air storage chambers, 9 sliding plugs, 10 first springs, 11 vent holes, 12 plugging blocks, 13 permanent magnets, 14 sliding plates, 15 pressure sensors, 16 second springs, 17 functional grooves, 18 sealing plates, 19 third springs, 20 sliding grooves and 21 fourth springs.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-4, an energy-conserving safe explosion-proof reboiler, including

reboiler shell

1, 1 diapire of reboiler shell runs through fixedly connected with inlet pipe 2, 1 roof of reboiler shell runs through fixedly connected with discharging pipe 3, balance tube 6, advance oil pipe 5, outlet duct 7, be provided with heat exchange tube 4 in the reboiler shell 1, fixedly connected with gas receiver 8 is run through to the one end that reboiler shell 1 was kept away from to balance tube 6, 8 lateral walls of gas receiver 8 that locate with advance oil pipe 5 lateral wall welding, the one end that reboiler shell 1 was kept away from to outlet duct 7 runs through inside extending to gas receiver 8, be provided with air pressure induction system in the balance tube 6, be provided with regulation and control device in the gas receiver 8.

The atmospheric pressure induction system include with balanced pipe 6 in the stopper 9 slides, the cross-section of stopper 9 slides for T shape, when internal pressure is normal, the stopper slides 6 shutoff of balanced pipe, a plurality of first springs 10 of fixedly connected with between stopper 9 and balanced pipe 6, air vent 11 has been seted up in the stopper 9, when the small scale excessive pressure, gaseous accessible air vent 11 gets into in the reservoir 8, pass through 7 backward flows of outlet duct again, make the reboiler can the small scale excessive pressure, set up in 1 lateral wall of reboiler shell and plugging device.

The plugging device comprises a sliding groove 20 arranged in the side wall of a reboiler shell 1, a plugging block 12 is sleeved in the sliding groove 20 in a sliding mode, a fourth spring 21 is fixedly connected between the plugging block 12 and the reboiler shell 1, the plugging block 12 is connected with the side wall of an air outlet pipe 7 in a penetrating and sliding mode and extends into the air outlet pipe 7, a permanent magnet 13 is embedded in the side wall, close to one side of the air outlet pipe 7, of a sliding plug 9, a pressure release valve is arranged in an air vent 11, a one-way valve is arranged in the air outlet pipe 7 and only allows gas to enter the reboiler shell 1 from an air storage chamber 8, the plugging block 12 is made of ferromagnetic materials, the plugging block 12 made of ferromagnetic materials can be attracted by the permanent magnet 13, when the sliding plug 9 does not move, the air outlet pipe 7 is kept in an open state, the gas in the air storage chamber 8 can flow back through the air outlet pipe 7, when the pressure, the blocking block 12 slides out to block the air outlet pipe 7, so that the gas entering the air storage chamber 8 lifts the sliding plate 14, and the regulating device is triggered.

The regulating and controlling device comprises a sliding plate 14 which is sleeved on the inner side wall of the gas storage chamber 8 in a sealing and sliding manner, a pressure sensor 15 is inlaid on the top wall in the gas storage chamber 8, the pressure sensor 15 is connected with a control circuit, when the pressure is still increased after being regulated and controlled by the regulating and controlling device, when the pressure exceeds a certain value, the reboiler is directly closed, the risk of explosion of the reboiler is avoided, the safety of the reboiler is increased, a plurality of second springs 16 are fixedly connected between the pressure sensor 15 and the sliding plate 14, functional grooves 17 are respectively formed in the side wall of the gas storage chamber 8 and the side wall of the oil inlet pipe 5, the two functional grooves 17 are mutually communicated, a sealing plate 18 is sleeved in the functional grooves 17 in a sealing and interacting manner, the sealing plate 18 extends into the oil inlet pipe 5, a plurality of third springs 19 are fixedly connected between the sealing plate 18 and the inner side wall of the oil inlet pipe 5, the sealing plate 18 is ejected out through, thereby reducing the internal pressure, and when the pressure is overlarge, the self-control is firstly carried out, rather than directly closing the reboiler, and the production is not influenced.

The length of the closing plate 18 should be smaller than the inner diameter of the oil inlet pipe 5, so that the closing plate 18 can slide into the oil inlet pipe to prevent the oil inlet pipe 5 from being directly blocked, and the oil passing area is reduced, thereby reducing the oil inlet amount.

According to the invention, materials enter a reboiler shell 1 through a feeding pipe 2, oil with heat enters a heat exchange pipe 4 through an oil inlet pipe 5 to exchange heat with internal materials, so that the internal materials are gasified, the gasified materials are discharged from a discharge pipe 3, if the internal materials are gasified too fast, and the pressure in the reboiler shell 1 is slightly over-pressurized, the pressure is not enough to overcome the elastic force of a first spring 10, a sliding plug 9 is not moved, the pressure is transmitted to a pressure release valve in a vent hole 11 to open the pressure release valve, the gas enters a gas storage chamber 8 through the vent hole and then flows back through an air outlet pipe 7 to balance the air pressure in the reboiler shell 1, so that the interior of the reboiler can be slightly over-pressurized;

when the pressure inside the reboiler shell 1 continues to increase and is no longer slightly over-pressurized, at this time, the vent hole 11 is not enough to discharge the overflowed gas into the gas storage chamber 8, at this time, the pressure overcomes the elastic force of the first spring 10, so that the sliding plug 9 is lifted up, along with the upward sliding of the sliding plug 9, the permanent magnet 13 on the sliding plug 9 is no longer opposite to the blocking block 12, the magnetic attraction of the permanent magnet 13 to the blocking block 12 becomes small and is not enough to overcome the elastic force of the fourth spring 21, at this time, the blocking block 12 slides out of the sliding groove 20 under the elastic force of the fourth spring 21, the gas outlet pipe 7 is blocked, along with the continuous upward sliding of the sliding plug 9, slides into the gas storage chamber 8, the overflowed gas enters the gas storage chamber 8, at this time, the gas outlet pipe 7 is in a blocking state, the gas entering the gas storage chamber 8 cannot be discharged, so that the sliding plate 14 is lifted up, when the, sliding into the oil inlet pipe 5, semi-plugging the oil inlet pipe 5, reducing the oil inlet amount of the oil inlet pipe, reducing the heat exchange speed, and controlling the gasification speed in the reboiler so as to control the internal pressure;

if the pressure in the reboiler shell 1 gradually returns to a normal value after self-regulation, the sliding plug 9 gradually resets under the action of the elastic force of the first spring 10 along with the reduction of the pressure, after the resetting, the permanent magnet 13 is opposite to the blocking block 12 again, the magnetic attraction of the permanent magnet 13 to the blocking block 12 overcomes the elastic force of the fourth spring 21, so that the blocking block 12 slides back to the sliding groove 20, the gas outlet pipe 7 is opened, the sliding plate 14 resets under the action of the elastic force of the second spring 16, so that the gas in the gas storage chamber 8 flows back to the reboiler shell 1 from the gas outlet pipe 7, and the heat of the gas in the reboiler shell is recycled;

if the internal pressure is continuously increased after self-regulation, the sliding plate 14 is continuously lifted until the second spring 16 is completely compressed, the pressure is continuously increased, and after the pressure exceeds the moving value, the pressure sensor 15 directly closes the reboiler to avoid explosion risks.

Although the terms reboiler case 1, feed pipe 2, discharge pipe 3, heat exchange pipe 4, oil feed pipe 5, balance pipe 6, gas discharge pipe 7, gas storage chamber 8, sliding plug 9, first spring 10, vent hole 11, block 12, permanent magnet 13, sliding plate 14, pressure sensor 15, second spring 16, functional groove 17, closing plate 18, third spring 19, sliding groove 20, fourth spring 21, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides an energy-conserving safe explosion-proof reboiler, includes reboiler shell (1), its characterized in that, reboiler shell (1) diapire runs through fixedly connected with inlet pipe (2), reboiler shell (1) roof runs through fixedly connected with discharging pipe (3), balance pipe (6), advances oil pipe (5), outlet duct (7), be provided with heat exchange tube (4) in reboiler shell (1), fixedly connected with gas receiver (8) is run through to the one end that reboiler shell (1) was kept away from in balance pipe (6), and gas receiver (8) lateral wall and advance oil pipe (5) lateral wall welding of locating, the one end that reboiler shell (1) was kept away from in outlet duct (7) runs through inside extending to gas receiver (8), be provided with atmospheric pressure induction system in balance pipe (6), be provided with the regulation and control device in gas receiver (8).

2. An energy-saving safety explosion-proof reboiler according to claim 1 characterized in that said air pressure sensing means comprises a sliding plug (9) in the balance tube (6), a plurality of first springs (10) are fixedly connected between said sliding plug (9) and the balance tube (6), a vent hole (11) is formed in said sliding plug (9), and a blocking means is arranged in the side wall of said reboiler housing (1).

3. An energy-saving safe anti-explosion reboiler according to claim 2, characterized in that the blocking device comprises a sliding groove (20) arranged in the side wall of the reboiler shell (1), a blocking block (12) is slidably sleeved in the sliding groove (20), a fourth spring (21) is fixedly connected between the blocking block (12) and the reboiler shell (1), the blocking block (12) and the side wall of the outlet pipe (7) penetrate through the sliding connection and extend to the inside of the outlet pipe (7), and a permanent magnet (13) is embedded in the side wall of the sliding plug (9) close to one side of the outlet pipe (7).

4. The energy-saving safe anti-explosion reboiler according to claim 1, wherein the regulating device comprises a sliding plate (14) hermetically and slidably sleeved on the inner side wall of the air storage chamber (8), the top wall of the air storage chamber (8) is embedded with a pressure sensor (15), a plurality of second springs (16) are fixedly connected between the pressure sensor (15) and the sliding plate (14), the side wall of the air storage chamber (8) and the side wall of the oil inlet pipe (5) are both provided with a functional groove (17), two functional grooves (17) are mutually communicated, a sealing plate (18) is hermetically and interactively sleeved in the functional groove (17), the sealing plate (18) extends into the oil inlet pipe (5), and a plurality of third springs (19) are fixedly connected between the sealing plate (18) and the inner side wall of the oil inlet pipe (5).

5. An energy-saving safety explosion-proof reboiler according to claim 3, characterized in that a pressure relief valve is provided in said vent hole (11), a one-way valve is provided in said air outlet pipe (7), and said blocking block (12) is made of ferromagnetic material.

6. An energy-saving safety anti-explosion reboiler according to claim 4, characterized in that the length of said closing plate (18) should be smaller than the inner diameter of the oil feed pipe (5).