CN102994759A

CN102994759A - Recycling device for noble metals in waste catalyst

Info

Publication number: CN102994759A
Application number: CN2012104966360A
Authority: CN
Inventors: 张秋玲
Original assignee: DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd
Current assignee: DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-03-27
Anticipated expiration: 2032-11-28
Also published as: CN102994759B

Abstract

The invention discloses a recycling device for noble metals in waste catalyst. The recycling device comprises a stirring tank, a pelletizer, a dry distillation device, a screening machine, a kettle-type treater, a storage tank and a recycling tank, wherein the lower side surface of the stirring tank is connected with a transmission device; the stirring tank, the pelletizer and the screening machine are connected by the transmission device; the screening machine is arranged above the dry distillation device; the dry distillation device is connected with the side bottom of the kettle-type treater by the transmission device; the kettle-type treater is connected with the filter, the storage tank and the recycling tank by a pipeline; a material inlet is arranged on the top of the stirring tank; a stirring device is arranged in the inner cavity of the stirring tank; a material hole is arranged on the upper part of the kettle-type treater; a stirrer is arranged on the inner part of the kettle-type treater; and a liquid inlet is arranged on the side part of the storage tank. The device for recycling the waste metal catalyst provided by the invention is simple to operate, saves manpower, and has low consumption, high efficiency and a good application prospect.

Description

The retrieving arrangement of precious metal in a kind of discarded catalyzer

Technical field

The invention belongs to resource and reclaim the comprehensive utilization field, be specifically related to the retrieving arrangement of precious metal in a kind of discarded catalyzer.

Background technology

The consumption of common metal is huge in the industrial and agricultural productions such as iron and steel, chemistry, special material, and in the last few years, the comprehensive utilization of China's pay attention to day by day first resource and the research and development of open pit mining were to particularly paying close attention to from the research and development that contain the waste catalyst recovery valuable metal.But with abroad compare, China utilizes the level of secondary resource that larger gap is still arranged.

But when increasing along with demand, but the expected reserves continuous decrease of metal.Meanwhile, contain the quantity of precious metal waste also in continuous growth, therefore these wastes are reclaimed the pressure that can alleviate the decline of metal reserves, also can reduce the huge Environmental costs that waste brings.It is a kind of common recovery method that the chemistry drop is got, and the sequestrant that often uses is ethylenediamine tetraacetic acid (EDTA) (EDTA) and sodium salt class sequestrant thereof, and this sequestrant is strong to the sequestering power of metal ion, just has good drop to get efficient.But this sequestrant is difficult to be degraded in physical environment, therefore uses for a long time, in a large number this type of sequestrant to bring Secondary Organic to pollute.

N, the N'-ethylenediamine disuccinic acid be a kind of in physical environment degradable sequestrant, be applied at present the drop heavy metal ion in the earth that fetches earth.

Summary of the invention

The present invention proposes the retrieving arrangement of precious metal in a kind of discarded catalyzer, this device can use will give up ink powder, spent catalyst of tackiness agent to be incorporated into together granulation, then carry out destructive distillation, obtain empyreumatic oil, provide pre-treatment for spent catalyst carries out precious metal regeneration.Produce empyreumatic oil in the retort process and can be used as the regenerated fuel use, the generation carbonization gas can be used as fuel and acts directly in the gas retort, produces the destructive distillation slag as the raw material of spent catalyst recover precious metals.Utilize eco-friendly N, N'-ethylenediamine disuccinic acid sequestrant in the autoclave treater, is got the palladium composition that contains in the discarded catalyzer of palladium by chemical drop.

The retrieving arrangement of precious metal in the discarded catalyzer of the present invention, its concrete structure is by the stirred pot of mixture; And be arranged at the stirred pot top, be used for adding the material inlet of raw material; Also be provided with in the inner chamber of stirred pot for the whipping appts that stirs material; The lower side of stirred pot links to each other with the transport unit that is used for the transmission material; Transport unit is connected stirred pot with tablets press; Transport unit is connected tablets press with destructive distillation device; The vertical direction of destructive distillation device is provided with screening machine, and the raw material that is used for making spreads uniformly and is sprinkled upon in the continuous retorting device; Raw material after the destructive distillation; Add in the autoclave treater by transport unit; The top of autoclave treater arranges the material mouth; The bosom of autoclave treater is provided with agitator; The autoclave treater is connected pipeline with filter, storage tank and withdrawing can and is connected; The sidepiece of storage tank is provided with for the fluid inlet that adds pH value adjustment liquid.

The device of recovery discarded metal catalyzer of the present invention, easy and simple to handle, save manpower and low-consumption high-efficiency, have a good application prospect.

Description of drawings

Fig. 1: the retrieving arrangement synoptic diagram of precious metal in the discarded catalyzer: wherein,

1. stirred pot; Material inlet 11; Whipping appts 12; Transport unit 2; Tablets press 3; Screening machine 41; Destructive distillation device 4; Autoclave treater 5; Material mouth 51; Agitator 52; Filter 6; Storage tank 7; Fluid inlet 71; Withdrawing can 8.

Embodiment

The following examples will be further described the present invention, but not thereby limiting the invention.

After taking by weighing raw material (150kg spent catalyst, the useless ink powder of 19kg, 14kg clay and 15kg water), ink powder and spent catalyst will give up, add in the stirred pot 1 by material inlet 11, slowly stirred 20 minutes by whipping appts 12, after fully mixing, then add clay and water by material inlet 11, after continuing to puddle evenly, transport unit 2 by stirred pot 1 bottom connects is sent to tablets press 3 granulations with material, and the diameter of pellet is between 5 ~ 7cm; With the material that granulation is finished, the raw material that will make by screening machine 41 is sprinkled upon in the continuous retorting device 4 shop uniformly, guarantees furnace bottom is all covered, and causes body of heater to damage to prevent local dry burning, and destructive distillation is carried out in subsequently sealing; The beginning heat temperature raising, rise to 450 ℃ from room temperature after insulation 2.5 hours, stopped heating treats that temperature is down to room temperature from 450 ℃ and comes out of the stove, and forbids water directly to be lowered the temperature; Make raw material after the destructive distillation; With raw material after the 50kg destructive distillation; Add in the 100L autoclave treater 5 by transport unit 2, the material mouth 51 that arranges from autoclave treater 5 tops, drop into 5kgN, the N'-ethylenediamine disuccinic acid, the agitator 52 of opening autoclave treater 5 stirs with 300 rev/mins of speed, and be warming up to 60 ° of C, process after 1.0 hours, liquid filters through filter 6 by pipeline, after the filtrate cooling, through piping with filtrate pump to storage tank 7, add dilute sulphuric acid from the fluid inlet 71 of storage tank 7, make the pH value be adjusted to 4, after static 0.5 hour, to separate out N, the N'-ethylenediamine disuccinic acid pumps into withdrawing can 8.

Metal ion-N, N'-ethylenediamine disuccinic acid chelating system discharges the concentration of palladium ion and analyzes by icp ms after acidifying.The device of recovery discarded metal catalyzer of the present invention, easy and simple to handle, save manpower and low-consumption high-efficiency, have a good application prospect.

Claims

1. the retrieving arrangement of precious metal in the discarded catalyzer, it is characterized in that: its concrete structure is by stirred pot (1); Tablets press (3); Destructive distillation device (4); Screening machine (41); Autoclave treater (5); Filter (6); Storage tank (7) and withdrawing can (8) consist of; Concrete linking relationship is:

The lower side of stirred pot (1) links to each other with transport unit (2); Transport unit (2) is connected stirred pot (1), tablets press (3) with screening machine (41); Screening machine (41) is arranged at the vertical direction of destructive distillation device (4), and destructive distillation device (4) is connected with the side bottom of autoclave treater (5) by transport unit (2); Autoclave treater (5) is connected 8 with filter (6), storage tank (7) with withdrawing can) be connected by pipeline;

Described stirred pot (1) top is provided with material inlet (11); The inner chamber of stirred pot (1) is provided with whipping appts (12);

The top of described autoclave treater (5) arranges material mouth (51); The bosom of autoclave treater (5) is provided with agitator (52);

The sidepiece of described storage tank (7) is provided with fluid inlet (71).