CN218944783U - External acid and water mixing adjusting structure of two acid absorption circulating tanks - Google Patents

Abstract

The utility model discloses an acid and water mixing regulation structure outside a two-acid-absorption circulation tank, which comprises a sulfuric acid diluter, wherein the sulfuric acid diluter comprises a horizontal bottom pipe, two ends of the horizontal bottom pipe are respectively and vertically connected with a first vertical pipe and a second vertical pipe, an acid inlet is arranged on the first vertical pipe, the acid inlet is communicated with a drying acid-string regulating valve group through the acid inlet, a spray pipe is arranged in the horizontal bottom pipe close to the first vertical pipe in a stretching way, a nozzle is arranged on the spray pipe body, the outer end of the spray pipe is connected with a water-adding regulating valve group through a water inlet pipe, the water inlet pipe is also connected with a compressed air pipeline, an acid outlet is arranged on the second vertical pipe, the acid outlet is communicated with the acid inlet pipe through an acid outlet pipe, two ends of the acid inlet pipe are respectively connected to the drying acid-string regulating valve group and the two-acid-absorption circulation tank, an exhaust port is arranged at the top of the second vertical pipe, and the exhaust port is connected with an exhaust pipe. The utility model can realize the out-tank mixing adjustment of acid and water, and can not generate the condition that dilute acid is formed at the liquid phase and the liquid level of the acid circulation tank to corrode the pump.

Description

External acid and water mixing adjusting structure of two acid absorption circulating tanks

Technical Field

The utility model relates to a mixed regulating structure of acid and water outside a two-acid absorption circulating tank, and belongs to the technical field of chemical production equipment.

Background

The original designed acid concentration adjusting and water adding structure of the two acid absorption circulating tanks in the sulfuric acid production process is that water is directly added and mixed in the tank, the specific structure is shown in figure 3, various acids and water are led into the two acid absorption circulating tanks through a pipeline, the specific structure is that the dry acid is led into an acid inlet pipe after passing through a dry acid string adjusting valve group, finally, the dry acid is led into the two acid absorption circulating tanks through an acid inlet main pipe, and the process water is led into the two acid absorption circulating tanks through the water inlet main pipe after passing through a water adding adjusting valve group. The disadvantages of this acid-feeding and water-adding structure are as follows: (1) The acid and the water respectively enter the two acid absorption circulating tanks through a pipeline, so that the two acid absorption circulating tanks are mixed slowly, dilute acid is easy to form at the liquid phase and the liquid level of the acid circulating tanks, the pump is corroded, and particularly, the liquid outlet pipe and the supporting pipe of the Yi Sier acid absorption pump are corroded and broken at the liquid level; (2) After water is directly added into the secondary acid absorption circulation tank, sulfuric acid mist is easy to form, and the sulfuric acid mist is also dilute acid mist and can corrode the part of the pumping acid liquid level.

Disclosure of Invention

The utility model aims to provide a structure for regulating the mixing of acid and water outside a two-acid absorption circulating tank. Is used for solving the technical problem of the existing direct water adding mixing structure in the tank.

The technical scheme of the utility model is as follows: the utility model provides an outer sour and water mixing regulation structure of two acid absorption circulation tank groove, including the sulfuric acid diluter of U type structure, the sulfuric acid diluter is including horizontal bottom tube, horizontal bottom tube both ends respectively vertically are connected with first standpipe and second standpipe, be provided with into sour mouthful on the first standpipe, it is connected with dry acid mixing regulation valves to advance sour mouthful through advancing sour pipe, stretch into in the horizontal bottom tube that is close to first standpipe and install the spray pipe, be provided with the nozzle on the spray pipe body, the outside end of spray pipe is connected with the regulation valve group that adds water through the inlet channel, still be connected with compressed air pipeline on the inlet channel, be provided with the acid outlet on the second standpipe, acid outlet is connected with into sour person in charge through acid outlet pipe, it is connected to dry acid mixing regulation valves and two acid absorption circulation tanks respectively to advance sour person in charge, the top of second standpipe is provided with the gas vent, the gas vent is connected with the bleed pipeline.

In the above-mentioned two acid absorption circulation tank outer acid and water mixing regulation structure, the bottom of the horizontal bottom pipe is provided with an overhaul acid discharge port, the overhaul acid discharge port is communicated with an acid discharge pipe through an overhaul acid discharge pipe, and an overhaul acid discharge valve is arranged on the overhaul acid discharge pipe.

In the acid and water mixing and adjusting structure outside the two acid absorption circulating tanks, the top of the first vertical pipe is connected with a vacuum breaking pipe, the other end of the vacuum breaking pipe is communicated with an acid discharging pipe, and the vacuum breaking pipe is provided with a vacuum breaking valve.

In the above-mentioned mixed regulation structure of acid and water outside the two acid absorption circulation tanks, the acid inlet pipe, the water inlet pipe, the compressed air pipe and the acid discharge pipe are all provided with control valves.

In the acid and water mixing adjusting structure outside the two acid absorption circulating tanks, the nozzle is arranged at the bottom of the water spraying pipe.

The utility model has the beneficial effects that: compared with the prior art, the sulfuric acid diluter with the U-shaped structure is arranged, the process water is communicated with the sulfuric acid diluter through the water inlet pipeline, the water inlet pipeline is connected with the compressed air pipeline, the process water is pressurized, the pressurized process water is sprayed out of the spray pipe and mixed with acid in the acid inlet pipe, the mixed acid enters the two acid absorption circulating tanks through the acid discharge pipe and the acid inlet pipe, the mixing speed of the acid and the water is higher, the mixing regulation of the acid and the water outside the tanks is realized, dilute acid is not formed at the liquid phase and the liquid level of the acid circulating tanks, and the pump is corroded. Sulfuric acid mist generated in the process of mixing the acid and water in the sulfuric acid diluter enters an air exhaust pipeline through an air exhaust port and is finally pumped to a tail gas secondary absorption section for treatment, so that the corrosion of the internal structure of the sulfuric acid mist caused by the entering of the sulfuric acid mist into a secondary acid absorption circulation tank is avoided.

According to the structure, the existing two acid-absorbing circulation tank internal mixing system is simply modified, so that the external mixing of acid and water can be realized, the original system and the new system are mutually backed up, the random switching can be realized, the maintenance and the maintenance without shutdown can be realized, the practicability is good, and the popularization and application values are good.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the sulfuric acid diluter;

fig. 3 is a schematic structural diagram of a conventional two-acid absorption circulation tank.

Reference numerals: the device comprises a 1-sulfuric acid diluter, a 2-horizontal bottom pipe, a 3-first vertical pipe, a 4-second vertical pipe, a 5-acid inlet, a 6-acid inlet pipe, a 7-drying acid-string regulating valve group, an 8-water spray pipe, a 9-acid-absorption circulating tank, a 10-water inlet pipe, a 11-water-adding regulating valve group, a 12-compressed air pipe, a 13-acid discharge port, a 14-acid discharge pipe, a 15-acid-inlet main pipe, a 16-gas outlet, a 17-gas extraction pipe, a 18-overhaul acid discharge port, a 19-overhaul acid discharge pipe, a 20-overhaul acid discharge valve, a 21-vacuum-breaking pipe, a 22-vacuum-breaking valve and a 23-control valve.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Embodiments of the utility model: the utility model provides an outer sour and water mixing regulation structure of two acid absorption circulation tank groove, as shown in fig. 1-2, including the sulphuric acid diluter 1 of U type structure, sulphuric acid diluter 1 is including horizontal bottom tube 2, horizontal bottom tube 2 both ends respectively vertically connect with first standpipe 3 and second standpipe 4, be provided with acid inlet 5 on the first standpipe 3, acid inlet 5 stretches into in the horizontal bottom tube 2 that is close to first standpipe 3 and installs spray pipe 8 through acid inlet tube 6 and dry cluster acid regulating valve group 7 communicates, be provided with the nozzle on the spray pipe 8 body, the outside end of spray pipe 8 is connected with adding water regulating valve group 11 through inlet channel 10, still be connected with compressed air pipeline 12 on the inlet channel 10, be provided with acid outlet 13 on the second standpipe 4, acid outlet 13 communicates with acid inlet main tube 15 through acid outlet 14, acid inlet main tube 15 both ends are connected to dry cluster acid regulating valve group 7 and two acid absorption circulation tank 9 respectively, the top of second standpipe 4 is provided with gas vent 16, gas vent 16 is connected with bleed pipe 17.

In the use process, the acid of the dry acid mixture enters the acid inlet pipe 6 after passing through the dry acid mixture regulating valve group 7, and does not flow into the secondary acid absorption circulating groove 9 through the acid inlet main pipe 15. Meanwhile, the process water does not enter the secondary acid-absorbing circulating tank 9 through the water inlet main pipe after passing through the water adding regulating valve group 11, but flows into the water inlet pipeline 10, meanwhile, the compressed space enters the water inlet pipeline 10 through the compressed air pipeline 12 to pressurize the process water, the flow rate of the process water is improved, the high-speed process water is sprayed out from the nozzle of the water spraying pipe 8 and is in a water mist shape, the water and the acid are fully and quickly mixed, the mixed acid slowly overflows, and finally is discharged from the acid discharge port 13, enters the acid inlet main pipe 15 through the acid discharge pipe 14 and finally enters the secondary acid-absorbing circulating tank 24. The sulfuric acid mist generated by mixing the acid and the water is directly discharged from an exhaust port 16 at the top of the second vertical pipe 4 and is pumped to a tail gas secondary absorption section for treatment through an exhaust pipeline 17.

The bottom of the horizontal bottom pipe 2 is provided with an overhaul acid discharge port 18, the overhaul acid discharge port 18 is communicated with the acid discharge pipe 14 through an overhaul acid discharge pipe 19, the overhaul acid discharge pipe 19 is provided with an overhaul acid discharge valve 20, when the sulfuric acid diluter 1 needs to be overhauled, all acid in the sulfuric acid diluter is discharged through the overhaul acid discharge pipe 19, and the overhaul acid discharge valve 20 is in a closed state at ordinary times and is opened during overhauling.

The top of first standpipe 3 is connected with broken vacuum tube 21, and broken vacuum tube 21's the other end and acid discharge pipe 14 intercommunication are provided with broken vacuum valve 22 on the broken vacuum tube 21, and in the use of sulphuric acid diluter 1, broken vacuum valve 22 keeps normally open, and when sulphuric acid diluter 1 at the beginning of work, through broken vacuum tube 21 exhaust its inside air, through setting up broken vacuum tube 21 simultaneously, avoid sulphuric acid diluter 1 in-process to appear the vacuum state.

The acid inlet pipe 6, the water inlet pipe 10, the compressed air pipe 12 and the acid discharge pipe 14 are all provided with control valves 23, the control valves 23 can adjust the acid inlet amount, the water inlet amount and the air inlet amount, and when the sulfuric acid diluter 1 needs to be overhauled, the acid and water mixing adjusting system outside the tank needs to be closed, the original system is used for acid inlet and water inlet, and at the moment, the acid inlet pipe 6, the water inlet pipe 10, the compressed air pipe 12 and the control valves 23 of the acid discharge pipe 14 can be closed to separate the acid and water mixing adjusting system outside the tank from the original system.

The nozzle is arranged at the bottom of the spray pipe 8, and acid is prevented from entering the spray pipe 8 through the nozzle 4 after entering from the first vertical pipe 3.

Claims (5)

1. The utility model provides a two inhale sour circulation groove outer acid of groove and water mixing regulation structure which characterized in that: including sulphuric acid diluter (1) of U type structure, sulphuric acid diluter (1) are including horizontal bottom tube (2), each vertical first standpipe (3) and second standpipe (4) that are connected with in horizontal bottom tube (2) both ends, be provided with acid inlet (5) on first standpipe (3), acid inlet (5) are through acid inlet pipe (6) and dry cluster sour regulating valve group (7) intercommunication, stretch into in the horizontal bottom tube (2) that are close to first standpipe (3) and install spray pipe (8), be provided with the nozzle on spray pipe (8) pipe shaft, the outside end of spray pipe (8) is connected with adding water regulating valve group (11) through inlet channel (10), still be connected with compressed air pipeline (12) on inlet channel (10), be provided with acid discharge port (13) on second standpipe (4), acid inlet pipe (15) both ends are connected to dry cluster sour regulating valve (7) and two are inhaled sour circulating groove (9) respectively, second standpipe (4) are provided with exhaust port (16).

2. The structure for regulating the mixing of acid and water outside the two acid absorption circulating tanks according to claim 1, which is characterized in that: the bottom of the horizontal bottom pipe (2) is provided with an overhaul acid discharge port (18), the overhaul acid discharge port (18) is communicated with the acid discharge pipe (14) through an overhaul acid discharge pipe (19), and an overhaul acid discharge valve (20) is arranged on the overhaul acid discharge pipe (19).

3. The structure for regulating the mixing of acid and water outside the two acid absorption circulating tanks according to claim 1, which is characterized in that: the top of the first vertical pipe (3) is connected with a vacuum breaking pipe (21), the other end of the vacuum breaking pipe (21) is communicated with the acid discharge pipe (14), and the vacuum breaking pipe (21) is provided with a vacuum breaking valve (22).

4. The structure for regulating the mixing of acid and water outside the two acid absorption circulating tanks according to claim 1, which is characterized in that: the acid inlet pipe (6), the water inlet pipe (10), the compressed air pipe (12) and the acid discharge pipe (14) are all provided with control valves (23).

5. The structure for regulating the mixing of acid and water outside the two acid absorption circulating tanks according to claim 1, which is characterized in that: the nozzle is arranged at the bottom of the water spraying pipe (8).

Images