Ammonia-alkali mixing device

Abstract

The present invention relates to the technical field of coking mixers, and in particular to an ammonia water and alkali mixer. It comprises an ammonia water inlet section, an alkali liquid inlet section and a mixing section; the ammonia water inlet section is connected to the alkali liquid inlet section, and the alkali liquid inlet section is connected to the mixing section; the ammonia water inlet section comprises an ammonia water inlet section pipe body and a head connected thereto, and the end of the ammonia water inlet section pipe body connected to the head and the head are both provided with a spiral jet-shaped opening; the alkali liquid inlet section comprises an alkali liquid inlet section pipe body and a spiral sheet, and the spiral sheet is fixed on the outer tube wall of the ammonia water inlet section pipe body; the spiral jet-shaped opening is opposite to the spiral direction of the spiral sheet. The remaining ammonia water is sprayed through the spiral jet-shaped opening of the mixer, the flow rate is accelerated, and it is sprayed in the opposite direction to the NaOH solution entering along the spiral sheet, decomposes the fixed ammonium salt, and mixes evenly. The mixing section is a cone section, and the mixing space is a cone section, the space is small, the flow rate is fast, and the blockage is reduced. The ammonia water inlet section and the alkali liquid inlet section are connected by flange bolts, which are convenient to disassemble and easy to repair.

Description

Technical Field

[0001] The invention relates to the technical field of coking mixers, in particular to an ammonia water and alkali mixer. Background Art

[0002] The state has increasingly stringent requirements for coking wastewater indicators, and residual ammonia accounts for about 60% of the total wastewater of coking enterprises. Residual ammonia is a complex, highly toxic, and difficult to degrade industrial wastewater, mainly composed of free ammonia and fixed ammonium. The ammonia evaporation system is an indispensable link in the treatment of residual ammonia, and the long-term stable operation of the ammonia evaporation tower and the qualified indicators of the tower bottom wastewater are inseparable from the amount of liquid alkali added and the uniformity of mixing. The uneven mixing of liquid alkali and residual ammonia will directly affect the operating efficiency of the ammonia evaporation tower, easily causing the ammonia nitrogen content of the ammonia evaporation wastewater to exceed the standard, which will have an impact on the biochemical treatment system of coking wastewater.

[0003] At present, the coking industry usually uses NaOH solution to decompose the fixed ammonium salt by adding it to the residual ammonia water inlet through a mixer. The existing mixer has the defect of uneven mixing, which causes excessive liquid alkali to enter the ammonia evaporation tower and react with calcium and magnesium ions in the ammonia water to form precipitation, blocking the tower plate and affecting the long-term stable operation of the ammonia evaporation tower. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an ammonia water and alkali mixer, which can evenly mix NaOH with the remaining ammonia water to avoid clogging the tower plates and ensure stable operation of the ammonia distillation tower.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An ammonia water and alkali mixer comprises an ammonia water inlet section, an alkali liquid inlet section and a mixing section; the ammonia water inlet section is connected to the alkali liquid inlet section, and the alkali liquid inlet section is connected to the mixing section; the ammonia water inlet section comprises an ammonia water inlet section pipe body and a head connected thereto, and a spiral jet-shaped opening is provided at the connection between the end of the ammonia water inlet section pipe body and the head and at the head; the alkali liquid inlet section comprises an alkali liquid inlet section pipe body and a spiral sheet, and the spiral sheet is fixedly connected to the outer pipe wall of the ammonia water inlet section pipe body; the spiral jet-shaped opening is opposite to the spiral direction of the spiral sheet.

[0007] The ammonia inlet section includes an ammonia inlet section flange, an ammonia inlet section flange cover, an ammonia inlet section pipe body and a sealing head; the ammonia inlet section flange is connected to one end of the ammonia inlet section pipe body, the other end of the ammonia inlet section pipe body is connected to the sealing head, and the ammonia inlet section flange cover is fixedly connected to the outer pipe wall of the ammonia inlet section pipe body.

[0008] The sealing head is a spherical sealing head, an elliptical sealing head or a conical sealing head.

[0009] The alkali liquid inlet section comprises an alkali liquid inlet section flange, an alkali liquid inlet section flange cover, an alkali liquid inlet section inlet pipe, an alkali liquid inlet section pipe body and a spiral sheet; the alkali liquid inlet section flange is connected to the alkali liquid inlet section inlet pipe, the alkali liquid inlet section inlet pipe is connected to the pipe wall of the alkali liquid inlet section pipe body, the alkali liquid inlet section flange cover is fixedly connected to one end of the alkali liquid inlet section pipe body, and the other end of the alkali liquid inlet section pipe body is connected to the mixing section.

[0010] The flange cover of the ammonia water inlet section is connected with the flange cover of the alkali solution inlet section by bolts.

[0011] The mixing section includes a cone section, a straight section and a mixing section flange; the cone section is a conical tube, the straight section is a straight tube, one end of the cone section is connected to the alkali solution inlet section pipe body, and the other end is connected to the straight section, and the straight section is connected to the mixing section flange.

[0012] The pipe bodies of the ammonia water inlet section and the alkali solution inlet section are both made of seamless steel pipes.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) The end of the ammonia inlet pipe body of the present invention is connected to the end cap and the end cap is provided with a spiral jet-shaped opening, the spiral sheet is fixedly connected to the outer pipe wall of the ammonia inlet pipe body, and the spiral jet-shaped opening is opposite to the spiral direction of the spiral sheet;

[0015] The remaining ammonia water is sprayed through the spiral jet-shaped openings of the mixer, the flow rate is accelerated, and it is sprayed in the opposite direction to the NaOH solution entering along the spiral blade, decomposing the fixed ammonium salt and mixing evenly.

[0016] 2) The mixing section is a conical section, and the mixing space is a conical section, with a small space, fast flow rate, and reduced blockage.

[0017] 3) The ammonia water inlet section and the alkali solution inlet section are connected by flange bolts, which are easy to disassemble and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] In the figure: 1- ammonia water inlet section flange 2- ammonia water inlet section flange cover 3- ammonia water inlet section pipe body 4- head 5- spiral sheet 6- alkali solution inlet section flange 7- alkali solution inlet section inlet pipe 8- alkali solution inlet section pipe body 9- alkali solution inlet section flange cover 10- cone section 11- straight section 12- mixing section flange DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 As shown, an ammonia water and alkali mixer includes an ammonia water inlet section, an alkali solution inlet section and a mixing section.

[0022] The ammonia inlet section includes an ammonia inlet section flange 1, an ammonia inlet section flange cover 2, an ammonia inlet section pipe body 3 and a head 4. The ammonia inlet section pipe body 3 is made of a seamless steel pipe, the ammonia inlet section flange 1 is welded to one end of the ammonia inlet section pipe body 3, the other end of the ammonia inlet section pipe body 3 is connected to the head 4, and the ammonia inlet section flange cover 2 is welded to the outer pipe wall of the ammonia inlet section pipe body 3. The head 4 is a spherical head, an elliptical head or a conical head. The end of the ammonia inlet section pipe body 3 connected to the head 4 and the head 4 are both provided with spiral jet-shaped openings.

[0023] The alkali liquid inlet section comprises an alkali liquid inlet section flange 6, an alkali liquid inlet section flange cover 9, an alkali liquid inlet section inlet pipe 7, an alkali liquid inlet section pipe body 8 and a spiral sheet 5. The alkali liquid inlet section inlet pipe 7 and the alkali liquid inlet section pipe body 8 are both made of seamless steel pipes, the alkali liquid inlet section flange 6 is connected to one end of the alkali liquid inlet section inlet pipe 7, the other end of the alkali liquid inlet section inlet pipe 7 is connected to the pipe wall of the alkali liquid inlet section pipe body 8 and communicated therewith, the alkali liquid inlet section flange cover 9 is welded to one end of the alkali liquid inlet section pipe body 8, and the other end of the alkali liquid inlet section pipe body 8 is connected to the mixing section.

[0024] The spiral blade 5 is welded to the outer wall of the ammonia water inlet section pipe body 3 , and the spiral jet-shaped opening at the end of the ammonia water inlet section pipe body 3 and the end cap 4 is opposite to the spiral direction of the spiral blade 5 .

[0025] The flange cover 2 of the ammonia water inlet section is connected to the flange cover 9 of the alkali solution inlet section by bolts, thereby connecting the ammonia water inlet section to the alkali solution inlet section, which is convenient for disassembly and easy for maintenance.

[0026] The mixing section includes a cone section 10, a straight section 11 and a mixing section flange 12. The cone section 10 is a conical tube, the straight section 11 is a straight tube, one end of the cone section 10 is connected to the alkali liquid inlet section pipe body 8, and the other end is connected to the straight section 11, and the straight section 11 is connected to the mixing section flange 12.

[0027] The remaining ammonia water is sprayed through the spiral jet opening of the mixer, the flow rate is accelerated, and the NaOH solution is sprayed in the opposite direction along the spiral plate 5 to decompose the fixed ammonium salt and mix evenly. The main part of the mixing section is a cone section 10, and the mixing space is a cone section with a small space, a fast flow rate, and reduced clogging. The ammonia water inlet section and the alkali solution inlet section are connected by flange bolts, which are easy to disassemble and easy to repair.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ammonia and alkali mixer, characterized in that: It includes an ammonia water inlet section, an alkali liquid inlet section and a mixing section; the ammonia water inlet section is connected to the alkali liquid inlet section, and the alkali liquid inlet section is connected to the mixing section; the ammonia water inlet section includes an ammonia water inlet section pipe body and a head connected thereto, and the end of the ammonia water inlet section pipe body connected to the head and the head are both provided with spiral jet-shaped openings; the alkali liquid inlet section includes an alkali liquid inlet section pipe body and a spiral sheet, and the spiral sheet is fixedly connected to the outer pipe wall of the ammonia water inlet section pipe body; the spiral jet-shaped opening is opposite to the spiral direction of the spiral sheet; The ammonia inlet section comprises an ammonia inlet section flange, an ammonia inlet section flange cover, an ammonia inlet section pipe body and a sealing head; the ammonia inlet section flange is connected to one end of the ammonia inlet section pipe body, the other end of the ammonia inlet section pipe body is connected to the sealing head, and the ammonia inlet section flange cover is fixedly connected to the outer pipe wall of the ammonia inlet section pipe body; The end cap is a spherical end cap, an elliptical end cap, or a conical end cap; The alkali liquid inlet section comprises an alkali liquid inlet section flange, an alkali liquid inlet section flange cover, an alkali liquid inlet section inlet pipe, an alkali liquid inlet section pipe body and a spiral sheet; the alkali liquid inlet section flange is connected to the alkali liquid inlet section inlet pipe, the alkali liquid inlet section inlet pipe is connected to the pipe wall of the alkali liquid inlet section pipe body, the alkali liquid inlet section flange cover is fixedly connected to one end of the alkali liquid inlet section pipe body, and the other end of the alkali liquid inlet section pipe body is connected to the mixing section; The flange cover of the ammonia water inlet section is connected to the flange cover of the alkali solution inlet section by bolts; The mixing section includes a cone section, a straight section and a mixing section flange; the cone section is a conical tube, the straight section is a straight tube, one end of the cone section is connected to the alkali solution inlet section pipe body, and the other end is connected to the straight section, and the straight section is connected to the mixing section flange.

2. The ammonia-alkali mixer according to claim 1, characterized in that: The pipe body of the ammonia water inlet section and the pipe body of the alkali solution inlet section are both made of seamless steel pipes.

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