CN216472334U

CN216472334U - Ammonia still surplus ammonia water processing system

Info

Publication number: CN216472334U
Application number: CN202123317661.1U
Authority: CN
Inventors: 张乃湛; 李贞涛; 曹迪; 李金亮; 刘旭; 秦佑苓
Original assignee: Shandong Rongxin Group Co ltd
Current assignee: Shandong Rongxin Group Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-10
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses an ammonia still surplus aqueous ammonia processing system belongs to aqueous ammonia processing system technical field, including ammonia still and ammonia still waste water pump, ammonia still is including many, each ammonia still is connected with surplus aqueous ammonia import pipeline, be equipped with independent surplus aqueous ammonia detection device that intakes on the surplus aqueous ammonia import pipeline, the tower bottom of each ammonia still is connected with ammonia still waste water outlet pipeline, ammonia still waste water outlet pipeline corresponds with solitary ammonia still waste water pump and is connected, the outside of each ammonia still all is connected with the reboiler, the reboiler is connected simultaneously to ammonia still waste water pump, the external connection of reboiler has steam condensate recovery system. The direct steam ammonia distillation tower is transformed into a reboiler indirect ammonia distillation tower, and the ammonia distillation tower is provided with independent control and regulation systems which can independently operate and complement interference, and can realize the parallel operation of the two towers. The ammonia water treatment capacity of the system is doubled, and the equipment utilization rate and efficiency are greatly improved.

Description

Ammonia still surplus ammonia water processing system

Technical Field

The utility model relates to an ammonia still surplus aqueous ammonia processing system belongs to aqueous ammonia processing system technical field.

Background

The ammonia still mainly uses steam to carry out ammonia distillation treatment on the residual ammonia water, most ammonia in the residual ammonia water is distilled out, and ammonia gas is led out from the top of the tower to enter the next working procedure. And (4) the wastewater after ammonia evaporation reaches the biochemical treatment condition, and enters a biochemical system for treatment after temperature reduction.

The traditional ammonia distillation tower is divided into two forms of low-pressure steam direct ammonia distillation and reboiler indirect ammonia distillation, and the towers in the two forms have certain difference in tower type. The steam of direct steam ammonia distillation gets into the effluent system, will increase the waste water volume, causes the increase of energy waste and waste water treatment volume, has great waste. In the prior art, direct steam is adopted for ammonia distillation, steam directly enters the bottom of an ammonia distillation tower, and condensed water is mixed with ammonia distillation wastewater. The two towers share a set of ammonia water, waste water and ammonia distillation tower bottom liquid level control and flow measurement system, all pipelines are shared, only one tower can be selected to operate in each operation, and the two towers cannot operate simultaneously. The capacity of treating ammonia water is limited, the utilization rate of equipment is low, and the treatment efficiency is low.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model aims to provide an ammonia still surplus aqueous ammonia processing system has solved the problem that appears among the prior art.

A surplus aqueous ammonia processing system of ammonia still, including ammonia still and ammonia still waste water pump, ammonia still is including many, each ammonia still is connected with surplus aqueous ammonia import pipeline, be equipped with independent surplus aqueous ammonia detection device that intakes on the surplus aqueous ammonia import pipeline, the tower bottom of each ammonia still is connected with ammonia still waste water outlet pipeline, ammonia still waste water outlet pipeline corresponds with solitary ammonia still waste water pump and is connected, the outside of each ammonia still all is connected with the reboiler, the reboiler is connected simultaneously to ammonia still waste water pump, the external connection of reboiler has steam condensate recovery system.

Furthermore, the ammonia still includes ammonia still one and ammonia still two, and the external connection of ammonia still one has reboiler one, and the external connection of ammonia still two has reboiler two, and ammonia still one and ammonia still two are connected solitary ammonia distillation waste water pump through ammonia distillation waste water outlet pipeline one and ammonia distillation waste water outlet pipeline two respectively.

Furthermore, the outside of the ammonia still is connected with the row's sediment pipeline, arranges the sediment pipeline and connects with the waste residue bin.

Further, ammonia evaporation wastewater is in the tube pass of the reboiler and enters the reboiler from an outlet of an ammonia evaporation wastewater pump, and a liquid level meter is arranged at the top of the reboiler to control the liquid level of the reboiler to be stable.

Furthermore, the ammonia still wastewater pump outlet that every ammonia still corresponds all is equipped with waste water flowmeter and waste water governing valve, and waste water governing valve includes waste water governing valve one and waste water governing valve two, and waste water governing valve one and waste water governing valve two are chain with the ammonia still tower bottom liquid level that corresponds, realize ammonia still tower bottom liquid level's regulation control at the bottom of the tower.

Furthermore, a wastewater regulating valve group is connected outside the ammonia distillation wastewater pump.

Furthermore, the outside of the ammonia distillation waste water pump connected with the ammonia distillation tower is additionally connected with a standby ammonia distillation waste water pump.

Compared with the prior art, the utility model, following beneficial effect has:

a ammonia still surplus aqueous ammonia processing system, reform transform direct steam ammonia still into reboiler indirect ammonia still, all have independent control and governing system on the ammonia still, homoenergetic independent operation, complementary interference to can realize two tower parallel operation. The single tower operation under the condition of low load is ensured, and the two towers are mutually standby. The parallel operation of the two towers under high load is realized, the ammonia water treatment capacity of the system is doubled, and the equipment utilization rate and efficiency are greatly improved; after the reboiler is put into use, the steam condensate water does not enter a wastewater system any more, the wastewater amount is reduced, the biochemical treatment load is reduced, the steam condensate water is recovered, the energy consumption is reduced, and the cost is greatly saved.

This transformation, under the prerequisite that does not increase the main part equipment, only through increasing partial detection instrument and adjusting valve, realized doubling of system throughput promptly, practiced thrift the investment greatly, the cost is reduced. The method has great advantages in energy saving and consumption reduction in the aspect of indirect ammonia distillation. The problems in the prior art are solved.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present invention;

in the figure: 1. a first reboiler; 2. a first ammonia still; 3. a first wastewater regulating valve; 4. a reboiler II; 5. a second ammonia still; 6. a second wastewater regulating valve; 7. a waste residue storage tank; 8. a first ammonia distillation wastewater outlet pipeline; 9. a second ammonia distillation wastewater outlet pipeline; 10. a wastewater flowmeter; 11. ammonia distillation wastewater pump; 12. waste water regulating valve group.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example 1:

as shown in figure 1, an ammonia still surplus aqueous ammonia processing system, including ammonia still and ammonia still waste water pump 11, the ammonia still includes many, each ammonia still is connected with surplus aqueous ammonia import pipeline, be equipped with independent surplus aqueous ammonia detection device that intakes on the surplus aqueous ammonia import pipeline, the tower bottom of each ammonia still is connected with ammonia still waste water outlet pipeline, ammonia still waste water outlet pipeline corresponds with solitary ammonia still waste water pump 11 and is connected, the outside of each ammonia still all is connected with the reboiler, the reboiler is connected simultaneously to ammonia still waste water pump 11, the external connection of reboiler has steam condensate recovery system.

The ammonia still includes ammonia still one 2 and ammonia still two 5, the external connection of ammonia still one 2 has reboiler one 1, and the external connection of ammonia still two 5 has reboiler two 4, and ammonia still one 2 and ammonia still two 5 are respectively through ammonia still waste water outlet pipeline one 8 and ammonia still waste water outlet pipeline two 9 connection solitary ammonia still waste water pump 11.

The outside of the ammonia still is connected with the row's slag pipeline, and row's slag pipeline is connected with waste residue bin 7.

The ammonia evaporation wastewater in the tube pass of the reboiler enters from the outlet of the ammonia evaporation wastewater pump 11, and the top of the reboiler is provided with a liquid level meter to control the liquid level stability of the reboiler.

The ammonia still wastewater pump exit that every ammonia still corresponds all is equipped with waste water flowmeter 10 and waste water governing valve, and the waste water governing valve includes waste water governing valve one 3 and waste water governing valve two 6, and waste water governing valve one 3 and waste water governing valve two 6 are chain with the ammonia still tower bottom liquid level that corresponds, realize ammonia still tower bottom liquid level's regulation control.

And a wastewater regulating valve group 12 is also connected outside the ammonia distillation wastewater pump 11.

The outside of the ammonia distillation wastewater pump 11 connected with the ammonia distillation tower is additionally connected with a standby ammonia distillation wastewater pump.

The working principle of the embodiment is as follows: newly adding a residual ammonia water inlet pipeline, and newly adding a residual ammonia water flowmeter and an adjusting valve on each residual ammonia water inlet pipeline, so that each ammonia still has independent residual ammonia water inlet detection and adjustment; the ammonia still I2 and the ammonia still II 5 are respectively connected with an independent ammonia still wastewater pump 11 through an ammonia still wastewater outlet pipeline I8 and an ammonia still wastewater outlet pipeline II 9, so that each tower is provided with an independent wastewater delivery pump 11; one newly added ammonia evaporation wastewater pump 11 is used as a standby device for the other two ammonia evaporation wastewater pumps 11; the outlet of the ammonia distillation wastewater pump 11 corresponding to each ammonia distillation tower is additionally provided with a wastewater flowmeter and a wastewater regulating valve 3, and each wastewater regulating valve is interlocked with the bottom liquid level of the corresponding ammonia distillation tower, so that the bottom liquid level of the ammonia distillation tower can be independently regulated and controlled.

Each reboiler independently corresponds to one ammonia still, the reboiler is designed to be indirectly heated by steam, the shell pass is low-pressure steam and is connected with a low-pressure steam main pipe in a boundary area, and a regulating valve is arranged to control the steam flow; the tube side is ammonia distillation wastewater, and enters the reboiler by an ammonia distillation wastewater pump 11, and the liquid level meters are arranged at the tops of the first reboiler 1 and the second reboiler 4, so that the liquid levels of the first reboiler 1 and the second reboiler 4 are controlled to be stable.

Adopt above to combine the figure description the utility model discloses an ammonia still surplus aqueous ammonia processing system of embodiment, this transformation only has realized doubling of system throughput promptly through increasing partial detection instrument and adjusting valve under the prerequisite that does not increase main part equipment, has practiced thrift the investment greatly, the cost is reduced. The method has great advantages in energy saving and consumption reduction in the aspect of indirect ammonia distillation. The problems in the prior art are solved. The problems in the prior art are solved. The present invention is not limited to the embodiments described, but rather, variations, modifications, substitutions and alterations from the embodiments described herein are possible without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an ammonia still surplus aqueous ammonia processing system which characterized in that: including ammonia still and ammonia still wastewater pump (11), the ammonia still is including many, each ammonia still is connected with surplus aqueous ammonia import pipeline, be equipped with independent surplus aqueous ammonia detection device that intakes on the surplus aqueous ammonia import pipeline, the tower bottom of each ammonia still is connected with ammonia still wastewater outlet pipeline, ammonia still wastewater outlet pipeline corresponds with solitary ammonia still wastewater pump (11) and is connected, the outside of each ammonia still all is connected with the reboiler, reboiler is connected simultaneously to ammonia still wastewater pump (11), the external connection of reboiler has steam condensate recovery system.

2. The ammonia still residual water treatment system according to claim 1, characterized in that: the ammonia still include ammonia still one (2) and ammonia still two (5), the external connection of ammonia still one (2) has reboiler one (1), the external connection of ammonia still two (5) has reboiler two (4), ammonia still one (2) and ammonia still two (5) are respectively through ammonia still waste water outlet pipeline one (8) and ammonia still waste water outlet pipeline two (9) connection solitary ammonia still waste water pump (11).

3. The ammonia still residual water treatment system according to claim 1, characterized in that: the outside of the ammonia still is connected with the sediment pipeline, and the sediment pipeline is connected with waste residue bin (7).

4. The ammonia still residual water treatment system according to claim 1, characterized in that: the reboiler tube side in for evaporating ammonia waste water, get into by evaporating ammonia waste water pump (11) export, the reboiler top is equipped with the level gauge, control reboiler liquid level stability.

5. The ammonia still residual water treatment system according to claim 1, characterized in that: the ammonia still wastewater pump exit that every ammonia still corresponds all be equipped with waste water flowmeter (10) and waste water governing valve, the waste water governing valve includes waste water governing valve (3) and waste water governing valve two (6), waste water governing valve (3) and waste water governing valve two (6) are chain with the ammonia still tower bottom liquid level that corresponds, realize ammonia still tower bottom liquid level's regulation control at the bottom of the tower.

6. The ammonia still residual water treatment system according to claim 1, characterized in that: and a wastewater regulating valve group (12) is also connected to the outside of the ammonia evaporation wastewater pump (11).

7. The ammonia still residual water treatment system according to claim 1, characterized in that: and a spare ammonia distillation wastewater pump is additionally connected outside the ammonia distillation wastewater pump (11) connected with the ammonia distillation tower.