CN201512486U

CN201512486U - Device for utilizing circulating hot water of absorber cooler to preheat liquid ammonia

Info

Publication number: CN201512486U
Application number: CN2009202398893U
Authority: CN
Inventors: 赵传玺
Original assignee: PINGYIN LUXI CHEMICAL THIRD FERTILIZER PLANT CO Ltd
Current assignee: PINGYIN LUXI CHEMICAL THIRD FERTILIZER PLANT CO Ltd
Priority date: 2009-10-22
Filing date: 2009-10-22
Publication date: 2010-06-23
Anticipated expiration: 2019-10-22

Abstract

The utility model discloses a device for utilizing circulating hot water of an absorber cooler to preheat liquid ammonia, and belongs to intermediate devices of carbamide production, in particular to an ammonia preheater. In the device, a hot water outlet of a carbamide absorber cooler is provided with a circulating hot water supply pipe with a valve and is connected with a hot medium inlet of the ammonia preheater, a circulating hot water return pipe with a valve is installed on a hot medium outlet of the ammonia preheater and is connected on a circulating hot water pipeline between the hot water valve and the circulating hot water pump, a condensate liquid bypass pipe connected and provided with a valve is installed on a condensate liquid conveying pipeline from an expansion slot to a condensate liquid conveying valve and is connected and communicated to a pipeline orifice of a deaerator. The device fully utilizes heat of water, generated by the absorber cooler, and fully reclaims heat carried by condensate liquid, according to measurement and calculation, a production line which produces carbamide for 20ton each hour can save steam for 24ton every day, standard coal can be saved for 835.5ton for the whole year, the device has prominent energy-saving effect, and can be extended and applied in enterprises which use the same production technique and devices.

Description

Utilize the device of an absorption cooler circulating hot water preheating liquefied ammonia

Technical field

The utility model belongs to the urea production intermediate equipment, particularly the equipment of preheating liquefied ammonia.

Background technology

The ammonia preheater uses the phlegma that produces in the expansion slot need consume more heat as thermal source preheating liquefied ammonia in urea production equipment, the heat that one ton of urea preheating of every production liquefied ammonia need consume is equivalent to about 50 kilograms of 1.3MPa steam, can produce a large amount of hot water at an absorption cooler on the other hand need utilize after the water recirculator cooling again, and a large amount of heat energy waste.

The utility model content

Preheating liquefied ammonia needs heat in the existing ammonia preheater in order to overcome, one absorption cooler produces a large amount of hot water needs the irrational problem of refrigerative energy utilization, the utility model provides a kind of device that utilizes an absorption cooler circulating hot water preheating liquefied ammonia, and the hot water that this device produces an absorption cooler is used for preheating liquefied ammonia and can makes full use of the energy.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of device that utilizes an absorption cooler circulating hot water preheating liquefied ammonia, the phlegma transfer lime of expansion slot through having phlegma transfer lime valve connects the import of ammonia preheater heating agent, and the outlet of ammonia preheater heating agent connects through the condensate discharge valve and leads to the deoxygenator pipeline opening; Hot water discharge pipe road and the circulating hot-water pump of one absorption cooler hot water outlet through having hot-water valve leads to water recirculator, it is characterized in that: at a described absorption cooler hot water outlet circulating hot water water-supply pipe that has valve is housed and is connected to the import of ammonia preheater heating agent, the circulating hot water return water pipe that the band valve is equipped with in the outlet of described ammonia preheater heating agent is connected on the circulating hot water pipeline between hot-water valve and the circulating hot-water pump, and described expansion slot is carried to phlegma and the valvular phlegma bypass tube of connecting band is housed on the phlegma transport pipe of valve is connected and lead to the deoxygenator pipeline opening.

The utility model is by setting up by an absorption cooler hot water outlet to the circulating hot water water-supply pipe of ammonia preheater heating agent import be exported to the hot water that the circulating hot water return water pipe of circulating hot-water pump produces an absorption cooler by ammonia preheater heating agent and be used for returning water recirculator behind the preheating liquefied ammonia, the heat that makes an absorption cooler produce hot water is fully used, the phlegma that expansion slot can be discharged of phlegma bypass tube be delivered directly to the heat that equally phlegma is carried in the boiler feed and fully reclaimed in addition, per hour produce the production line of 20 tons of urea according to measuring and calculating and can save 24 tons of steam every day, can save 835.5 tons in mark coal the whole year.The utility model only increases by three pipelines on existing production line just can obtain remarkable energy saving effect, can use at the business enterprise expand that uses similar production technique and equipment.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model,

Fig. 2 is the prior art state graph.

Among the figure, 1. lead to the deoxygenator pipeline opening, 2. the condensate discharge valve, 3. circulating hot water return water pipe, 4. phlegma bypass tube, 5. ammonia preheater, 6. phlegma transfer lime valve, 7. circulating hot water water-supply pipe, 8. phlegma transfer lime 9. expansion slots, 10. an absorption cooler, 11. hot-water valve, 12. the circulating hot water pipeline, 13. water recirculators, 14. circulating hot-water pumps.

Embodiment

Embodiment of the present utility model is, as shown in the figure:

Embodiment 1, a kind of device that utilizes an absorption cooler circulating hot water preheating liquefied ammonia, the phlegma transfer lime 8 of expansion slot 9 through having phlegma transfer lime valve 6 connects the 5 phlegma imports of ammonia preheater, and ammonia preheater condensate outlet connects through condensate discharge valve 2 and leads to deoxygenator pipeline opening 2; Hot water discharge pipe road 12 and the circulating hot-water pump 14 of one absorption cooler, 10 hot water outlets through having hot-water valve 11 leads to water recirculator 13, it is characterized in that: at a described absorption cooler hot water outlet circulating hot water water-supply pipe 7 that has valve is housed and is connected to the import of ammonia preheater phlegma, the circulating hot water return water pipe 3 that described ammonia preheater condensate outlet is equipped with the band valve is connected on the circulating hot water pipeline between hot-water valve and the circulating hot-water pump, and described expansion slot is carried to phlegma and the valvular phlegma bypass tube 4 of connecting band is housed on the phlegma transport pipe of valve is connected and lead to the deoxygenator pipeline opening.

Claims

1. device that utilizes an absorption cooler circulating hot water preheating liquefied ammonia, the phlegma transfer lime of expansion slot through having phlegma transfer lime valve connects the import of ammonia preheater heating agent, and the outlet of ammonia preheater heating agent connects through the condensate discharge valve and leads to the deoxygenator pipeline opening; Hot water discharge pipe road and the circulating hot-water pump of one absorption cooler hot water outlet through having hot-water valve leads to water recirculator, it is characterized in that: at a described absorption cooler hot water outlet circulating hot water water-supply pipe that has valve is housed and is connected to the import of ammonia preheater heating agent, the circulating hot water return water pipe that the band valve is equipped with in the outlet of described ammonia preheater heating agent is connected on the circulating hot water pipeline between hot-water valve and the circulating hot-water pump, and described expansion slot is carried to phlegma and the valvular phlegma bypass tube of connecting band is housed on the phlegma transport pipe of valve is connected and lead to the deoxygenator pipeline opening.