CN211255244U - Recycling system of hydrogen chloride water mixed gas - Google Patents
Recycling system of hydrogen chloride water mixed gas Download PDFInfo
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- CN211255244U CN211255244U CN201921034561.8U CN201921034561U CN211255244U CN 211255244 U CN211255244 U CN 211255244U CN 201921034561 U CN201921034561 U CN 201921034561U CN 211255244 U CN211255244 U CN 211255244U
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Abstract
The utility model relates to a recycle system of hydrogen chloride water-mixed gas, the recycle system includes concentration system, analysis and absorption system, the concentration system includes concentration tower, concentration reboiler, concentration condensation water pitcher, concentration top of the tower first grade condenser, concentration top of the tower second grade condenser, vacuum buffer tank and rivers jet pump vacuum unit; the analysis and absorption system comprises an analysis tower, an analysis tower reboiler, an analysis condensate water tank, an analysis tower top condenser, a primary falling film absorber, a secondary falling film absorber, a tail gas absorption tower, a concentrated acid cooler and a hydrochloric acid tank. The utility model has the advantages that: the utility model discloses hydrogen chloride water mist's recycle system can reduce the sewage treatment cost and improve resource utilization.
Description
Technical Field
The utility model relates to a spent acid treatment field, in particular to hydrogen chloride water mixed gas's recycle system.
Background
In chemical production, waste hydrochloric acid is often generated, and the waste acid contains impurities, such as tar, which cannot be directly recycled, and is usually directly discharged into a sewage tank for treatment, so that the waste of resources is caused, and the sewage treatment cost is increased; the waste acid can be evaporated, hydrogen chloride water mixed gas can be generated in the evaporation process, and the generated hydrogen chloride water mixed gas can be recycled, so that the resource utilization can be effectively improved.
Therefore, it is necessary to develop a system for recycling a hydrogen chloride water mixed gas, which can reduce the cost of sewage treatment and improve the resource utilization.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can reduce sewage treatment cost and improve resource utilization's hydrogen chloride water mixed gas's recycle system.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a hydrogen chloride water mist's recycle system which characterized in that: the recycling system comprises a concentration system and an analysis and absorption system, the concentration system comprises a concentration tower, a concentration reboiler, a concentration condensate water tank, a first-stage condenser at the top of the concentration tower, a second-stage condenser at the top of the concentration tower, a vacuum buffer tank and a water flow jet pump vacuum unit,
the center of the top end of the concentration tower is provided with an acid gas outlet A communicated with the concentration tower, and the center of the bottom end of the concentration tower is provided with a concentrated hydrochloric acid discharge pipeline B communicated with the concentration tower; a concentrated hydrochloric acid discharge pipeline E is communicated with and arranged on the concentrated hydrochloric acid discharge pipeline B, and a concentration tower discharge pump is also connected in series on the concentrated hydrochloric acid discharge pipeline B; a dilute hydrochloric acid feeding pipeline A, a hydrogen chloride water mixed gas feeding pipeline A and an acid gas discharging pipeline A which are communicated with the concentration tower are sequentially arranged at one side end of the concentration tower from top to bottom, the hydrogen chloride water mixed gas feeding pipeline A is communicated with the hydrogen chloride water mixed gas discharging pipeline A, a hydrogen chloride tail gas feeding pipe is further communicated with the hydrogen chloride water mixed gas feeding pipeline A, and an acid wastewater discharging pipe A communicated with the concentration tower is arranged at the upper part of the other side end of the concentration tower;
the top end of the reboiler of the concentration tower is communicated with the acidic gas discharge pipeline A through a connecting pipe C, and the bottom end of the reboiler of the concentration tower is communicated with the concentrated hydrochloric acid discharge pipeline B through a connecting pipe D; a saturated steam inlet pipeline C, a condensed water outlet A1 and a condensed water outlet A2 which are communicated with the concentration reboiler are sequentially arranged at one side end of the concentration tower reboiler from top to bottom; a condensed water inlet A1 communicated with the condensed water tank is formed in the center of the top end of the condensed water tank, and an acid gas discharge pipeline B and a condensed water outlet pipeline A communicated with the condensed water tank are sequentially arranged at one side end of the condensed water tank from top to bottom; the upper part of the other side end of the condensed water tank is provided with a condensed water inlet A2 communicated with the condensed water tank;
the condensed water outlet A1 is communicated with a condensed water inlet A1 through a connecting pipe E, and the condensed water outlet A2 is communicated with a condensed water inlet A2 through a connecting pipe F;
the center of the top end of the first-stage condenser at the top of the concentration tower is provided with an acid gas inlet A communicated with the first-stage condenser at the top of the concentration tower, the center of the bottom end of the first-stage condenser at the top of the concentration tower is provided with an acid wastewater discharge pipe B communicated with the first-stage condenser at the top of the concentration tower, the other end of the acid wastewater discharge pipe B is communicated with the acid wastewater discharge pipe A, and the acid wastewater discharge pipe B is also provided with a vacuum condensation wastewater pump; the side end of the first-stage condenser at the top of the concentration tower is sequentially provided with a circulating water outlet pipeline A and a circulating water inlet pipeline A from top to bottom, and the lower part of the other side end of the first-stage condenser at the top of the concentration tower is provided with an acid gas outlet A communicated with the first-stage condenser at the top of the concentration tower;
the center of the top end of the second-stage condenser at the top of the concentration tower is provided with an acid gas inlet B communicated with the second-stage condenser at the top of the concentration tower, and the acid gas inlet B is communicated with an acid gas outlet A through a connecting pipe G; an acid wastewater discharge pipe C communicated with the second-stage condenser at the top of the concentration tower is arranged in the center of the bottom end of the second-stage condenser at the top of the concentration tower, and the other end of the acid wastewater discharge pipe C is communicated with an acid wastewater discharge pipe B; a circulating water outlet pipeline B and a circulating water inlet pipeline B are sequentially arranged at the side end of the second-stage condenser at the top of the concentration tower from top to bottom, and a vacuum-pumping pipeline A communicated with the second-stage condenser at the top of the concentration tower is arranged at the lower part of the other side end of the second-stage condenser at the top of the concentration tower;
a vacuumizing pipeline B communicated with the vacuum buffer tank is arranged in the center of the top end of the vacuum buffer tank, and the other end of the vacuumizing pipeline B is communicated with a connecting pipe G; an acidic wastewater discharge pipe D communicated with the vacuum buffer tank is arranged on the side part of the top end of the vacuum buffer tank, and the other end of the acidic wastewater discharge pipe D is communicated with the acidic wastewater discharge pipe A; two sides of the lower end of the vacuum buffer tank are respectively communicated with an acidic wastewater discharge pipe B and an acidic wastewater discharge pipe C through a connecting pipe H and a connecting pipe I, and the acidic wastewater discharge pipe A is also communicated with an acidic wastewater discharge pipe E;
the water jet pump vacuum unit is communicated with the vacuumizing pipeline A, the water jet pump vacuum unit is also communicated with an emptying pipeline A, and an emptying pipeline B is also communicated between the vacuumizing pipeline A and the emptying pipeline A; the water jet pump vacuum unit is also communicated with an industrial water inlet pipeline and is sequentially provided with a circulating water outlet pipeline C and a circulating water inlet pipeline C from top to bottom;
the analysis and absorption system comprises an analysis tower, an analysis tower reboiler, an analysis condensate water tank, an analysis tower top condenser, a primary falling film absorber, a secondary falling film absorber, a tail gas absorption tower, a concentrated acid cooler and a hydrochloric acid tank,
a hydrogen chloride gas outlet A communicated with the desorption tower is formed in the center of the top end of the desorption tower, the upper part of one side end of the desorption tower is communicated with a concentrated hydrochloric acid discharge pipeline A on a preheater of the desorption tower, and a hydrogen chloride water mixed gas discharge pipeline B communicated with the top ends of the desorption tower and a reboiler of the desorption tower is formed in the lower part of one side end of the desorption tower; a dilute hydrochloric acid feeding pipeline B communicated with the bottom of the desorption tower and the bottom of a reboiler of the desorption tower is arranged in the center of the bottom of the desorption tower; the lower part of the other side end of the desorption tower is communicated with a dilute hydrochloric acid feeding pipeline A on the concentration tower, and a liquid level flow control valve is also arranged on the dilute hydrochloric acid feeding pipeline A in series and is close to the concentration tower;
a saturated steam inlet pipeline D, a condensed water outlet B1 and a condensed water outlet B2 which are communicated with the desorption tower reboiler are sequentially arranged at one side end of the desorption tower reboiler from top to bottom;
a condensate water inlet B1 communicated with the analysis condensate water tank is formed in the center of the top end of the analysis condensate water tank, a condensate water inlet B2 communicated with the analysis condensate water tank is formed in the upper portion of the side end of the analysis condensate water tank, and a condensate water inlet pipeline C communicated with the analysis condensate water tank is formed in the lower portion of the other side end of the analysis condensate water tank; the condensed water outlet B1 is communicated with a condensed water inlet B1 through a connecting pipe H, and the condensed water outlet B2 is communicated with a condensed water inlet B2 through a connecting pipe I;
a hydrogen chloride gas inlet A communicated with the analysis tower top condenser is formed in the center of the top end of the analysis tower top condenser, a concentrated hydrochloric acid discharge pipeline C communicated with the analysis tower top condenser is formed in the center of the bottom end of the analysis tower top condenser, a hydrogen chloride gas outlet B communicated with the analysis tower top condenser is formed in the lower portion of one side end of the analysis tower top condenser, a circulating water outlet pipeline D and a circulating water inlet pipeline D communicated with the analysis tower top condenser are sequentially formed in the other side end of the analysis tower top condenser from top to bottom, and the hydrogen chloride gas outlet A is communicated with the hydrogen chloride gas inlet A through the hydrogen chloride gas pipeline A;
a hydrogen chloride gas inlet B, a circulating water outlet pipeline E and a circulating water inlet pipeline E which are communicated with the primary falling film absorber are sequentially arranged at one side end of the primary falling film absorber from top to bottom, and the hydrogen chloride gas outlet B is communicated with the hydrogen chloride gas inlet B through a hydrogen chloride gas pipeline B; the other side end of the primary falling film absorber is sequentially provided with a concentrated hydrochloric acid feeding pipeline D and a hydrogen chloride gas outlet C which are communicated with the primary falling film absorber from top to bottom; a concentrated hydrochloric acid discharge pipeline D communicated with the primary falling film absorber is arranged in the center of the bottom end of the primary falling film absorber, and the other end of the concentrated hydrochloric acid discharge pipeline D is communicated with a concentrated hydrochloric acid discharge pipeline C;
a hydrogen chloride gas inlet C, a circulating water outlet pipeline F and a circulating water inlet pipeline F which are communicated with the secondary falling film absorber are sequentially arranged at one side end of the secondary falling film absorber from top to bottom, and the hydrogen chloride gas outlet C is communicated with the hydrogen chloride gas inlet C through the hydrogen chloride gas pipeline C; the other side end of the secondary falling film absorber is sequentially provided with a concentrated hydrochloric acid feeding pipeline C and a hydrogen chloride gas outlet D which are communicated with the secondary falling film absorber from top to bottom; the center of the bottom end of the secondary falling film absorber is communicated with a concentrated hydrochloric acid feeding pipeline D on the primary falling film absorber;
a hydrogen chloride gas inlet D communicated with the tail gas absorption tower is formed in the lower part of one side end of the tail gas absorption tower, and the hydrogen chloride gas outlet D is communicated with the hydrogen chloride gas inlet D through a hydrogen chloride gas pipeline D; a concentrated hydrochloric acid feeding pipeline B communicated with the tail gas absorption tower is arranged at the upper part of the other side end of the tail gas absorption tower, the center of the top end of the tail gas absorption tower is communicated with a hydrogen chloride tail gas feeding pipe on a hydrogen chloride water mixed gas feeding pipeline A, a pressure flow control valve is also connected in series on the hydrogen chloride tail gas feeding pipe, and the pressure flow control valve is arranged close to the concentration tower; the center of the bottom end of the tail gas absorption tower is communicated with a concentrated hydrochloric acid feeding pipeline C on the secondary falling film absorber;
the center of the top end of the concentrated acid cooler is communicated with a concentrated hydrochloric acid feeding pipeline B on the tail gas absorption tower, and the center of the bottom end of the concentrated acid cooler is communicated with a concentrated hydrochloric acid discharging pipeline E on a concentrated hydrochloric acid discharging pipeline B; a circulating water outlet pipeline G and a circulating water inlet pipeline G which are communicated with the concentrated acid cooler are sequentially arranged at one side end of the concentrated acid cooler from top to bottom;
the upper end of the hydrochloric acid tank is communicated with a concentrated hydrochloric acid discharge pipeline C on a condenser at the top of the analysis tower, and a hydrogen chloride gas pipeline E is also communicated between the upper end of the hydrochloric acid tank and the hydrogen chloride gas pipeline C; a concentrated hydrochloric acid discharge pipeline F communicated with the hydrochloric acid tank is arranged on the lower portion of one side end of the hydrochloric acid tank, and a hydrochloric acid discharge pump is further arranged on the concentrated hydrochloric acid discharge pipeline F in series.
Two discharge pumps of the concentration tower are arranged on a concentrated hydrochloric acid discharge pipeline B in parallel.
The vacuum condensation waste water pump has two, parallelly connected setting between acid waste water discharging pipe A and acid waste water discharging pipe B.
The three water jet pump vacuum units are arranged on the vacuum-pumping pipeline A in parallel.
The system for recycling a hydrogen chloride-water mixed gas according to claim 1, characterized in that: the two hydrochloric acid discharge pumps are arranged on the concentrated hydrochloric acid discharge pipeline F in parallel.
The utility model has the advantages that:
(1) the utility model discloses the recycle system of hydrogen chloride water mist sends the hydrogen chloride water mist to the concentration system to carry out the concentrated reaction with plus dilute hydrochloric acid, the concentration obtains concentrated hydrochloric acid A; finally, the concentrated hydrochloric acid A is sent to an analysis and absorption system to be analyzed and absorbed, so that concentrated hydrochloric acid B with higher concentration is obtained, hydrogen chloride water mixed gas obtained in the evaporation process and hydrogen chloride water mixed gas obtained in the analysis process can be fully recycled, an effective concentrated hydrochloric acid finished product is obtained, tar-containing waste acid can be regenerated, and resource utilization is improved; meanwhile, in the treatment process, the generation of sewage is reduced, so that the sewage treatment cost can be reduced;
(2) the utility model discloses hydrogen chloride water mist's recycle system, wherein, concentrated tower discharge pump, vacuum condensation waste water pump and hydrochloric acid discharge pump are a plurality of parallelly connected settings, and then can improve whole hydrogen chloride water mist's recycle system's treatment effeciency greatly.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structure schematic diagram of the concentration system in the recycling system of the hydrogen chloride water mixed gas of the utility model.
Fig. 2 is the utility model discloses analytic and absorption system's among hydrogen chloride water gas mixture's the recycle system schematic structure.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.
Examples
This embodiment hydrogen chloride water gas mixture's recycle system, this recycle system include concentration system, analysis and absorption system.
The concentration system, as shown in fig. 1, includes a concentration tower 7, a concentration reboiler 8, a concentration condensed water tank 9, a concentration tower top primary condenser 10, a concentration tower top secondary condenser 11, a vacuum buffer tank 12 and a water jet pump vacuum unit 13.
The center of the top end of the concentration tower 7 is provided with an acid gas outlet 701A communicated with the concentration tower 7, the center of the bottom end of the concentration tower 7 is provided with a concentrated hydrochloric acid discharge pipeline B communicated with the concentration tower 7, and the concentrated hydrochloric acid discharge pipeline B is communicated with a concentrated hydrochloric acid feed pipeline A; a concentrated hydrochloric acid discharge pipeline E is communicated with and arranged on the concentrated hydrochloric acid discharge pipeline B, and a concentration tower discharge pump 702 is also connected in series on the concentrated hydrochloric acid discharge pipeline B; in the embodiment, in specific implementation, two discharge pumps 702 of the concentration tower are arranged on a discharge pipeline B of concentrated hydrochloric acid in parallel; a dilute hydrochloric acid feed pipeline A, a hydrogen chloride water mixed gas feed pipeline A and an acid gas discharge pipeline A which are communicated with the concentration tower 7 are sequentially arranged at one side end of the concentration tower 7 from top to bottom, a hydrogen chloride tail gas feed pipe is further communicated and arranged on the hydrogen chloride water mixed gas feed pipeline A, and an acid wastewater discharge pipe A communicated with the concentration tower 7 is arranged at the upper part of the other side end of the concentration tower 7.
The top end of the concentration tower reboiler 8 is communicated with the acid gas discharge pipeline A through a connecting pipe C, and the bottom end of the concentration tower reboiler 8 is communicated with the concentrated hydrochloric acid discharge pipeline B through a connecting pipe D; a saturated steam inlet pipeline C, a condensed water outlet 801A1 and a condensed water outlet 801A2 which are communicated with the concentration reboiler 8 are sequentially arranged at one side end of the concentration tower reboiler 8 from top to bottom.
A condensed water inlet 901A1 communicated with the condensed water tank 9 is arranged at the center of the top end of the condensed water tank 9, and an acid gas discharge pipeline B and a condensed water outlet pipeline A communicated with the condensed water tank 9 are sequentially arranged at one side end of the condensed water tank 9 from top to bottom; the upper part of the other side end of the condensed water tank 9 is provided with a condensed water inlet 901A2 communicated with the condensed water tank 9.
The condensed water outlet 801a1 is communicated with the condensed water inlet 901a1 through a connecting pipe E, and the condensed water outlet 801a2 is communicated with the condensed water inlet 901a2 through a connecting pipe F.
The center of the top end of the first-stage condenser 10 at the top of the concentration tower is provided with an acid gas inlet 1001A communicated with the first-stage condenser 10 at the top of the concentration tower, the center of the bottom end of the first-stage condenser 10 at the top of the concentration tower is provided with an acid wastewater discharge pipe B communicated with the first-stage condenser 10 at the top of the concentration tower, the other end of the acid wastewater discharge pipe B is communicated with the acid wastewater discharge pipe A, the acid wastewater discharge pipe B is also provided with a vacuum condensation wastewater pump 1002 in series, and the two vacuum condensation wastewater pumps 1002 are arranged between the acid wastewater discharge pipe A; the side end of the first-stage condenser 10 at the top of the concentrating tower is sequentially provided with a circulating water outlet pipeline A and a circulating water inlet pipeline A from top to bottom, and the lower part of the other side end of the first-stage condenser 10 at the top of the concentrating tower is provided with an acid gas outlet 1003A communicated with the first-stage condenser 10 at the top of the concentrating tower.
The center of the top end of the concentration tower top secondary condenser 11 is provided with an acid gas inlet 1101B communicated with the concentration tower top secondary condenser 11, and the acid gas inlet 1101B is communicated with an acid gas outlet 1003A through a connecting pipe G; an acid wastewater discharge pipe C communicated with the concentration tower top secondary condenser 11 is arranged in the center of the bottom end of the concentration tower top secondary condenser 11, and the other end of the acid wastewater discharge pipe C is communicated with an acid wastewater discharge pipe B; the side end of the second-stage condenser 11 at the top of the concentrating tower is sequentially provided with a circulating water outlet pipeline B and a circulating water inlet pipeline B from top to bottom, and the lower part of the other side end of the second-stage condenser 11 at the top of the concentrating tower is provided with a vacuum-pumping pipeline A communicated with the second-stage condenser 11 at the top of the concentrating tower.
A vacuumizing pipeline B communicated with the vacuum buffer tank 12 is arranged in the center of the top end of the vacuum buffer tank 12, and the other end of the vacuumizing pipeline B is communicated with a connecting pipe G; an acidic wastewater discharge pipe D communicated with the vacuum buffer tank 12 is arranged on the side part of the top end of the vacuum buffer tank 12, and the other end of the acidic wastewater discharge pipe D is communicated with the acidic wastewater discharge pipe A; the two sides of the lower end of the vacuum buffer tank 12 are respectively communicated with the acidic wastewater discharge pipe B and the acidic wastewater discharge pipe C through a connecting pipe H and a connecting pipe I, and the acidic wastewater discharge pipe E is also communicated and arranged on the acidic wastewater discharge pipe A.
The three water jet pump vacuum units 13 are arranged on the vacuumizing pipeline A in parallel; the water jet pump vacuum unit 13 is also provided with an emptying pipeline A in a communication way, and an emptying pipeline B is also arranged between the vacuumizing pipeline A and the emptying pipeline A in a communication way; the water jet pump vacuum unit 13 is also communicated with an industrial water inlet pipeline, and the water jet pump vacuum unit 13 is sequentially provided with a circulating water outlet pipeline C and a circulating water inlet pipeline C from top to bottom.
As shown in fig. 2, the desorption and absorption system includes a desorption tower 14, a desorption tower reboiler 15, a desorption condensate water tank 16, a desorption tower top condenser 17, a primary falling film absorber 18, a secondary falling film absorber 19, a tail gas absorption tower 20, a concentrated acid cooler 21, and a hydrochloric acid tank 22.
A hydrogen chloride gas outlet 1401A communicated with the desorption tower 14 is arranged at the center of the top end of the desorption tower 14, the upper part of one side end of the desorption tower 14 is communicated with a concentrated hydrochloric acid discharge pipeline A on the desorption tower preheater 6, and the lower part of one side end of the desorption tower 14 is provided with a hydrogen chloride water mixed gas discharge pipeline B communicated with the top ends of the desorption tower 14 and a desorption tower reboiler 15; a dilute hydrochloric acid feeding pipeline B communicated with the bottom ends of the desorption tower 14 and a desorption tower reboiler 15 is arranged in the center of the bottom end of the desorption tower 14; the lower part of the other side end of the desorption tower 14 is communicated with a dilute hydrochloric acid feeding pipeline A on the concentration tower 7, a liquid level flow control valve 1402 is further arranged on the dilute hydrochloric acid feeding pipeline A in series, and the liquid level flow control valve 1402 is arranged close to the concentration tower 7.
A saturated steam inlet pipeline D, a condensed water outlet 1501B1 and a condensed water outlet 1501B2 which are communicated with the desorption tower reboiler 15 are sequentially arranged at one side end of the desorption tower reboiler 15 from top to bottom.
A condensate water inlet 1601B1 communicated with the analysis condensate water tank 16 is arranged at the center of the top end of the analysis condensate water tank 16, a condensate water inlet 1601B2 communicated with the analysis condensate water tank 16 is arranged at the upper part of the side end of the analysis condensate water tank 16, and a condensate water inlet pipeline C communicated with the analysis condensate water tank 16 is arranged at the lower part of the other side end of the analysis condensate water tank 16; the condensed water outlet 1501B1 is communicated with the condensed water inlet 1601B1 through a connecting pipe J, and the condensed water outlet 1501B2 is communicated with the condensed water inlet 1601B2 through a connecting pipe K.
The center of the top end of the analysis tower top condenser 17 is provided with a hydrogen chloride gas inlet 1701A communicated with the analysis tower top condenser 17, the center of the bottom end of the analysis tower top condenser 17 is provided with a concentrated hydrochloric acid discharge pipeline C communicated with the analysis tower top condenser 17, the lower part of one side end of the analysis tower top condenser 17 is provided with a hydrogen chloride gas outlet 1702B communicated with the analysis tower top condenser 17, the other side end of the analysis tower top condenser 17 is sequentially provided with a circulating water outlet pipeline D and a circulating water inlet pipeline 1401D communicated with the analysis tower top condenser 17 from top to bottom, and the hydrogen chloride gas outlet 1401A is communicated with the hydrogen chloride gas inlet 1701A through the hydrogen chloride gas pipeline A.
A hydrogen chloride gas inlet 1801B, a circulating water outlet pipeline E and a circulating water inlet pipeline E which are communicated with the primary falling film absorber 18 are sequentially arranged at one side end of the primary falling film absorber 18 from top to bottom, and the hydrogen chloride gas outlet 1702B is communicated with the hydrogen chloride gas inlet 1801B through a hydrogen chloride gas pipeline B; the other side end of the primary falling film absorber 18 is sequentially provided with a concentrated hydrochloric acid feeding pipeline D and a hydrogen chloride gas outlet 1802C which are communicated with the primary falling film absorber 18 from top to bottom; the bottom center of the first-level falling film absorber 18 is provided with a concentrated hydrochloric acid discharge pipeline D communicated with the first-level falling film absorber 18, and the other end of the concentrated hydrochloric acid discharge pipeline D is communicated with a concentrated hydrochloric acid discharge pipeline C.
A hydrogen chloride gas inlet 1901C, a circulating water outlet pipeline F and a circulating water inlet pipeline F which are communicated with the secondary falling film absorber 19 are sequentially arranged at one side end of the secondary falling film absorber 19 from top to bottom, and a hydrogen chloride gas outlet 1802C is communicated with the hydrogen chloride gas inlet 1901C through a hydrogen chloride gas pipeline C; the other side end of the secondary falling film absorber 19 is sequentially provided with a concentrated hydrochloric acid feeding pipeline C and a hydrogen chloride gas outlet 1902D which are communicated with the secondary falling film absorber 19 from top to bottom; the bottom center of the second-stage falling film absorber 19 is communicated with a concentrated hydrochloric acid feeding pipeline D on the first-stage falling film absorber 18.
A hydrogen chloride gas inlet 2001D communicated with the tail gas absorption tower 20 is arranged at the lower part of one side end of the tail gas absorption tower 20, and a hydrogen chloride gas outlet 1902D is communicated with the hydrogen chloride gas inlet 2001D through a hydrogen chloride gas pipeline D; a concentrated hydrochloric acid feeding pipeline B communicated with the tail gas absorption tower 20 is arranged at the upper part of the other side end of the tail gas absorption tower 20, the center of the top end of the tail gas absorption tower 20 is communicated with a hydrogen chloride tail gas feeding pipe on a hydrogen chloride water mixed gas feeding pipeline A, a pressure flow control valve 2002 is further arranged on the hydrogen chloride tail gas feeding pipe in series, and the pressure flow control valve 2002 is arranged close to the concentration tower; the bottom center of the tail gas absorption tower 20 is communicated with a concentrated hydrochloric acid feeding pipeline C on the secondary falling film absorber 19.
The center of the top end of the concentrated acid cooler 21 is communicated with a concentrated hydrochloric acid feeding pipeline B on the tail gas absorption tower 20, and the center of the bottom end of the concentrated acid cooler 21 is communicated with a concentrated hydrochloric acid discharging pipeline E on a concentrated hydrochloric acid discharging pipeline B; a circulating water outlet pipeline G and a circulating water inlet pipeline G which are communicated with the concentrated acid cooler 21 are sequentially arranged at one side end of the concentrated acid cooler 21 from top to bottom.
The upper end of the hydrochloric acid tank 22 is communicated with a concentrated hydrochloric acid discharge pipeline C on the analysis tower top condenser 17, and a hydrogen chloride gas pipeline E is also communicated between the upper end of the hydrochloric acid tank 22 and the hydrogen chloride gas pipeline C; a concentrated hydrochloric acid discharge pipeline F communicated with the hydrochloric acid tank 22 is arranged at the lower part of one side end of the hydrochloric acid tank 22, a hydrochloric acid discharge pump 2201 is also arranged on the concentrated hydrochloric acid discharge pipeline F in series, and two hydrochloric acid discharge pumps 2201 are arranged on the concentrated hydrochloric acid discharge pipeline F in parallel.
The working principle of the recycling system of the hydrogen chloride water mixed gas in the embodiment is as follows:
a) introducing a hydrogen chloride water mixed gas into a concentration tower 7, and introducing dilute hydrochloric acid into the concentration tower 7 to perform a concentration reaction on the hydrogen chloride water mixed gas and the dilute hydrochloric acid;
b) after the concentration reaction is finished, hydrochloric acid with the mass percentage concentration of 23% and heavy component gas are generated at the bottom of the concentration tower 7, and then the hydrochloric acid with the mass percentage concentration of 23% is conveyed and stored through a discharge pump 702 of the concentration tower for later use; introducing the heavy component gas into a reboiler 8 of a concentration tower, concentrating and reboiling to obtain hydrochloric acid with the mass percentage concentration of 23%, and conveying and storing the hydrochloric acid through a discharge pump 702 of the concentration tower;
c) after the concentration reaction is finished, generating acid wastewater and light component gas at the top of the concentration tower 7, then sequentially passing the light component gas through a first-stage condenser 10 and a second-stage condenser 11 at the top of the concentration tower for condensation treatment, and combining with vacuum pumping treatment, wherein in the treatment process, the generated acid wastewater and the acid wastewater generated at the top of the concentration tower 7 are collected together in a centralized manner and are subjected to subsequent treatment;
d) conveying the hydrochloric acid with the mass percentage concentration of 23% obtained in the step b) to an analysis tower 14 through a material outlet pump 702 of the concentration tower for heating to generate a mixed gas of dilute hydrochloric acid, hydrogen chloride gas and hydrogen chloride water, evaporating and separating the mixed gas of the hydrogen chloride water in the hydrochloric acid with the mass percentage concentration of 23% through an analysis tower reboiler 15 at the bottom of the analysis tower 14, entering an analysis condensate water tank 16 for condensation, and introducing the condensed hydrogen chloride gas into the analysis tower 14 again for repeated cyclic analysis;
e) d) introducing the dilute hydrochloric acid generated in the step d) into a concentration tower 7 for concentration reaction again, introducing the generated hydrogen chloride gas into an analysis tower top condenser 17 for condensation, introducing the generated hydrochloric acid with the mass percentage concentration of 30% into a hydrochloric acid tank 22 for storage, and sequentially introducing the hydrogen chloride gas generated in the condensation process into a primary falling film absorber 18 and a secondary falling film absorber 19;
f) and (3) sequentially introducing hydrochloric acid in a concentrated hydrochloric acid discharge pipe E into a concentrated acid cooler 21, a tail gas absorption tower 20, a secondary falling film absorber 19 and a primary falling film absorber 18, carrying out absorption reaction with hydrogen chloride gas, finally introducing the hydrochloric acid with the mass percentage concentration of 30% generated in the primary falling film absorber 18 into a hydrochloric acid tank 22 for storage, and introducing hydrogen chloride tail gas generated in the tail gas absorption tower 20 into a concentration tower 7 to participate in the concentration reaction.
The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a hydrogen chloride water mist's recycle system which characterized in that: the recycling system comprises a concentration system and an analysis and absorption system,
the concentration system comprises a concentration tower, a concentration reboiler, a concentration condensate water tank, a first-stage condenser at the top of the concentration tower, a second-stage condenser at the top of the concentration tower, a vacuum buffer tank and a water jet pump vacuum unit,
the center of the top end of the concentration tower is provided with an acid gas outlet A communicated with the concentration tower, and the center of the bottom end of the concentration tower is provided with a concentrated hydrochloric acid discharge pipeline B communicated with the concentration tower; a concentrated hydrochloric acid discharge pipeline E is communicated with and arranged on the concentrated hydrochloric acid discharge pipeline B, and a concentration tower discharge pump is also connected in series on the concentrated hydrochloric acid discharge pipeline B; a dilute hydrochloric acid feeding pipeline A, a hydrogen chloride water mixed gas feeding pipeline A and an acid gas discharging pipeline A which are communicated with the concentration tower are sequentially arranged at one side end of the concentration tower from top to bottom, the hydrogen chloride water mixed gas feeding pipeline A is communicated with the hydrogen chloride water mixed gas discharging pipeline A, a hydrogen chloride tail gas feeding pipe is further communicated with the hydrogen chloride water mixed gas feeding pipeline A, and an acid wastewater discharging pipe A communicated with the concentration tower is arranged at the upper part of the other side end of the concentration tower;
the top end of the reboiler of the concentration tower is communicated with the acidic gas discharge pipeline A through a connecting pipe C, and the bottom end of the reboiler of the concentration tower is communicated with the concentrated hydrochloric acid discharge pipeline B through a connecting pipe D; a saturated steam inlet pipeline C, a condensed water outlet A1 and a condensed water outlet A2 which are communicated with the concentration reboiler are sequentially arranged at one side end of the concentration tower reboiler from top to bottom; a condensed water inlet A1 communicated with the condensed water tank is formed in the center of the top end of the condensed water tank, and an acid gas discharge pipeline B and a condensed water outlet pipeline A communicated with the condensed water tank are sequentially arranged at one side end of the condensed water tank from top to bottom; the upper part of the other side end of the condensed water tank is provided with a condensed water inlet A2 communicated with the condensed water tank;
the condensed water outlet A1 is communicated with a condensed water inlet A1 through a connecting pipe E, and the condensed water outlet A2 is communicated with a condensed water inlet A2 through a connecting pipe F;
the center of the top end of the first-stage condenser at the top of the concentration tower is provided with an acid gas inlet A communicated with the first-stage condenser at the top of the concentration tower, the center of the bottom end of the first-stage condenser at the top of the concentration tower is provided with an acid wastewater discharge pipe B communicated with the first-stage condenser at the top of the concentration tower, the other end of the acid wastewater discharge pipe B is communicated with the acid wastewater discharge pipe A, and the acid wastewater discharge pipe B is also provided with a vacuum condensation wastewater pump; the side end of the first-stage condenser at the top of the concentration tower is sequentially provided with a circulating water outlet pipeline A and a circulating water inlet pipeline A from top to bottom, and the lower part of the other side end of the first-stage condenser at the top of the concentration tower is provided with an acid gas outlet A communicated with the first-stage condenser at the top of the concentration tower;
the center of the top end of the second-stage condenser at the top of the concentration tower is provided with an acid gas inlet B communicated with the second-stage condenser at the top of the concentration tower, and the acid gas inlet B is communicated with an acid gas outlet A through a connecting pipe G; an acid wastewater discharge pipe C communicated with the second-stage condenser at the top of the concentration tower is arranged in the center of the bottom end of the second-stage condenser at the top of the concentration tower, and the other end of the acid wastewater discharge pipe C is communicated with an acid wastewater discharge pipe B; a circulating water outlet pipeline B and a circulating water inlet pipeline B are sequentially arranged at the side end of the second-stage condenser at the top of the concentration tower from top to bottom, and a vacuum-pumping pipeline A communicated with the second-stage condenser at the top of the concentration tower is arranged at the lower part of the other side end of the second-stage condenser at the top of the concentration tower;
a vacuumizing pipeline B communicated with the vacuum buffer tank is arranged in the center of the top end of the vacuum buffer tank, and the other end of the vacuumizing pipeline B is communicated with a connecting pipe G; an acidic wastewater discharge pipe D communicated with the vacuum buffer tank is arranged on the side part of the top end of the vacuum buffer tank, and the other end of the acidic wastewater discharge pipe D is communicated with the acidic wastewater discharge pipe A; two sides of the lower end of the vacuum buffer tank are respectively communicated with an acidic wastewater discharge pipe B and an acidic wastewater discharge pipe C through a connecting pipe H and a connecting pipe I, and the acidic wastewater discharge pipe A is also communicated with an acidic wastewater discharge pipe E;
the water jet pump vacuum unit is communicated with the vacuumizing pipeline A, the water jet pump vacuum unit is also communicated with an emptying pipeline A, and an emptying pipeline B is also communicated between the vacuumizing pipeline A and the emptying pipeline A; the water jet pump vacuum unit is also communicated with an industrial water inlet pipeline and is sequentially provided with a circulating water outlet pipeline C and a circulating water inlet pipeline C from top to bottom;
the analysis and absorption system comprises an analysis tower, an analysis tower reboiler, an analysis condensate water tank, an analysis tower top condenser, a primary falling film absorber, a secondary falling film absorber, a tail gas absorption tower, a concentrated acid cooler and a hydrochloric acid tank,
a hydrogen chloride gas outlet A communicated with the desorption tower is formed in the center of the top end of the desorption tower, the upper part of one side end of the desorption tower is communicated with a concentrated hydrochloric acid discharge pipeline A on a preheater of the desorption tower, and a hydrogen chloride water mixed gas discharge pipeline B communicated with the top ends of the desorption tower and a reboiler of the desorption tower is formed in the lower part of one side end of the desorption tower; a dilute hydrochloric acid feeding pipeline B communicated with the bottom of the desorption tower and the bottom of a reboiler of the desorption tower is arranged in the center of the bottom of the desorption tower; the lower part of the other side end of the desorption tower is communicated with a dilute hydrochloric acid feeding pipeline A on the concentration tower, and a liquid level flow control valve is also arranged on the dilute hydrochloric acid feeding pipeline A in series and is close to the concentration tower;
a saturated steam inlet pipeline D, a condensed water outlet B1 and a condensed water outlet B2 which are communicated with the desorption tower reboiler are sequentially arranged at one side end of the desorption tower reboiler from top to bottom;
a condensate water inlet B1 communicated with the analysis condensate water tank is formed in the center of the top end of the analysis condensate water tank, a condensate water inlet B2 communicated with the analysis condensate water tank is formed in the upper portion of the side end of the analysis condensate water tank, and a condensate water inlet pipeline C communicated with the analysis condensate water tank is formed in the lower portion of the other side end of the analysis condensate water tank; the condensed water outlet B1 is communicated with a condensed water inlet B1 through a connecting pipe H, and the condensed water outlet B2 is communicated with a condensed water inlet B2 through a connecting pipe I;
a hydrogen chloride gas inlet A communicated with the analysis tower top condenser is formed in the center of the top end of the analysis tower top condenser, a concentrated hydrochloric acid discharge pipeline C communicated with the analysis tower top condenser is formed in the center of the bottom end of the analysis tower top condenser, a hydrogen chloride gas outlet B communicated with the analysis tower top condenser is formed in the lower portion of one side end of the analysis tower top condenser, a circulating water outlet pipeline D and a circulating water inlet pipeline D communicated with the analysis tower top condenser are sequentially formed in the other side end of the analysis tower top condenser from top to bottom, and the hydrogen chloride gas outlet A is communicated with the hydrogen chloride gas inlet A through the hydrogen chloride gas pipeline A;
a hydrogen chloride gas inlet B, a circulating water outlet pipeline E and a circulating water inlet pipeline E which are communicated with the primary falling film absorber are sequentially arranged at one side end of the primary falling film absorber from top to bottom, and the hydrogen chloride gas outlet B is communicated with the hydrogen chloride gas inlet B through a hydrogen chloride gas pipeline B; the other side end of the primary falling film absorber is sequentially provided with a concentrated hydrochloric acid feeding pipeline D and a hydrogen chloride gas outlet C which are communicated with the primary falling film absorber from top to bottom; a concentrated hydrochloric acid discharge pipeline D communicated with the primary falling film absorber is arranged in the center of the bottom end of the primary falling film absorber, and the other end of the concentrated hydrochloric acid discharge pipeline D is communicated with a concentrated hydrochloric acid discharge pipeline C;
a hydrogen chloride gas inlet C, a circulating water outlet pipeline F and a circulating water inlet pipeline F which are communicated with the secondary falling film absorber are sequentially arranged at one side end of the secondary falling film absorber from top to bottom, and the hydrogen chloride gas outlet C is communicated with the hydrogen chloride gas inlet C through the hydrogen chloride gas pipeline C; the other side end of the secondary falling film absorber is sequentially provided with a concentrated hydrochloric acid feeding pipeline C and a hydrogen chloride gas outlet D which are communicated with the secondary falling film absorber from top to bottom; the center of the bottom end of the secondary falling film absorber is communicated with a concentrated hydrochloric acid feeding pipeline D on the primary falling film absorber;
a hydrogen chloride gas inlet D communicated with the tail gas absorption tower is formed in the lower part of one side end of the tail gas absorption tower, and the hydrogen chloride gas outlet D is communicated with the hydrogen chloride gas inlet D through a hydrogen chloride gas pipeline D; a concentrated hydrochloric acid feeding pipeline B communicated with the tail gas absorption tower is arranged at the upper part of the other side end of the tail gas absorption tower, the center of the top end of the tail gas absorption tower is communicated with a hydrogen chloride tail gas feeding pipe on a hydrogen chloride water mixed gas feeding pipeline A, a pressure flow control valve is also connected in series on the hydrogen chloride tail gas feeding pipe, and the pressure flow control valve is arranged close to the concentration tower; the center of the bottom end of the tail gas absorption tower is communicated with a concentrated hydrochloric acid feeding pipeline C on the secondary falling film absorber;
the center of the top end of the concentrated acid cooler is communicated with a concentrated hydrochloric acid feeding pipeline B on the tail gas absorption tower, and the center of the bottom end of the concentrated acid cooler is communicated with a concentrated hydrochloric acid discharging pipeline E on a concentrated hydrochloric acid discharging pipeline B; a circulating water outlet pipeline G and a circulating water inlet pipeline G which are communicated with the concentrated acid cooler are sequentially arranged at one side end of the concentrated acid cooler from top to bottom;
the upper end of the hydrochloric acid tank is communicated with a concentrated hydrochloric acid discharge pipeline C on a condenser at the top of the analysis tower, and a hydrogen chloride gas pipeline E is also communicated between the upper end of the hydrochloric acid tank and the hydrogen chloride gas pipeline C; a concentrated hydrochloric acid discharge pipeline F communicated with the hydrochloric acid tank is arranged on the lower portion of one side end of the hydrochloric acid tank, and a hydrochloric acid discharge pump is further arranged on the concentrated hydrochloric acid discharge pipeline F in series.
2. The system for recycling a hydrogen chloride-water mixed gas according to claim 1, characterized in that: two discharge pumps of the concentration tower are arranged on a concentrated hydrochloric acid discharge pipeline B in parallel.
3. The system for recycling a hydrogen chloride-water mixed gas according to claim 1, characterized in that: the vacuum condensation waste water pump has two, parallelly connected setting between acid waste water discharging pipe A and acid waste water discharging pipe B.
4. The system for recycling a hydrogen chloride-water mixed gas according to claim 1, characterized in that: the three water jet pump vacuum units are arranged on the vacuum-pumping pipeline A in parallel.
5. The system for recycling a hydrogen chloride-water mixed gas according to claim 1, characterized in that: the two hydrochloric acid discharge pumps are arranged on the concentrated hydrochloric acid discharge pipeline F in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921034561.8U CN211255244U (en) | 2019-07-04 | 2019-07-04 | Recycling system of hydrogen chloride water mixed gas |
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| CN201921034561.8U CN211255244U (en) | 2019-07-04 | 2019-07-04 | Recycling system of hydrogen chloride water mixed gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985083A (en) * | 2021-02-06 | 2021-06-18 | 四川省金路树脂有限公司 | Device and method for synthesizing hydrogen chloride and coproducing medium-low pressure steam in three-stage manner |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985083A (en) * | 2021-02-06 | 2021-06-18 | 四川省金路树脂有限公司 | Device and method for synthesizing hydrogen chloride and coproducing medium-low pressure steam in three-stage manner |
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